[Author:]chris_chan

[Desc:]各种各样的效果的rv layoutmanager以及demo示例

app/src/main/AndroidManifest.xml

@@ -17,6 +17,27 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+
+        <activity android:name="com.common.commonlibtest.viewpagerlayoutmanager.VariousRvDemoActivity" />
+
+        <activity
+            android:name="com.common.commonlibtest.viewpagerlayoutmanager.circle.CircleLayoutActivity"
+            android:parentActivityName="com.common.commonlibtest.viewpagerlayoutmanager.VariousRvDemoActivity" />
+        <activity
+            android:name="com.common.commonlibtest.viewpagerlayoutmanager.circlescale.CircleScaleLayoutActivity"
+            android:parentActivityName="com.common.commonlibtest.viewpagerlayoutmanager.VariousRvDemoActivity" />
+        <activity
+            android:name="com.common.commonlibtest.viewpagerlayoutmanager.scale.ScaleLayoutActivity"
+            android:parentActivityName="com.common.commonlibtest.viewpagerlayoutmanager.VariousRvDemoActivity" />
+        <activity
+            android:name="com.common.commonlibtest.viewpagerlayoutmanager.gallery.GalleryLayoutActivity"
+            android:parentActivityName="com.common.commonlibtest.viewpagerlayoutmanager.VariousRvDemoActivity" />
+        <activity
+            android:name="com.common.commonlibtest.viewpagerlayoutmanager.carousel.CarouselLayoutActivity"
+            android:parentActivityName="com.common.commonlibtest.viewpagerlayoutmanager.VariousRvDemoActivity" />
+        <activity
+            android:name="com.common.commonlibtest.viewpagerlayoutmanager.rotate.RotateLayoutActivity"
+            android:parentActivityName="com.common.commonlibtest.viewpagerlayoutmanager.VariousRvDemoActivity" />
     </application>
 
 </manifest>

app/src/main/java/com/common/commonlibtest/DemoActivity.java

@@ -1,9 +1,10 @@
 package com.common.commonlibtest;
 
-import androidx.appcompat.app.AppCompatActivity;
-
+import android.content.Intent;
 import android.os.Bundle;
 
+import androidx.appcompat.app.AppCompatActivity;
+
 import com.common.commonlib.image.config.GlideHolderConfig;
 import com.common.commonlib.image.config.GlideTransitionConfig;
 import com.common.commonlib.image.loader.ImageLoader;
@@ -20,6 +21,7 @@ import com.common.commonlibtest.bean.LoginResponse;
 import com.common.commonlibtest.manager.CollectionLoader;
 import com.common.commonlibtest.manager.InternetLoader;
 import com.common.commonlibtest.manager.LoginLoader;
+import com.common.commonlibtest.viewpagerlayoutmanager.VariousRvDemoActivity;
 import com.yinuo.commonlibtest.R;
 import com.yinuo.commonlibtest.databinding.ActivityMainBinding;
 
@@ -67,6 +69,10 @@ public class DemoActivity extends AppCompatActivity {
             });
         });
 
+        binding.rv.setOnClickListener(v -> {
+            startActivity(new Intent(DemoActivity.this, VariousRvDemoActivity.class));
+        });
+
         binding.clearBtn.setOnClickListener(l -> ImageLoader.INSTANCE.clearAllCache(DemoActivity.this));
 
         binding.btn.setOnClickListener(l -> {

app/src/main/java/com/common/commonlibtest/viewpagerlayoutmanager/BaseActivity.java

@@ -0,0 +1,102 @@
+package com.common.commonlibtest.viewpagerlayoutmanager;
+
+import android.os.Bundle;
+import android.view.Gravity;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.View;
+import android.widget.Toast;
+
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.recyclerview.widget.RecyclerView;
+import androidx.vectordrawable.graphics.drawable.VectorDrawableCompat;
+
+import com.common.commonlib.view.viewpagerlayoutmanager.ScrollHelper;
+import com.common.commonlib.view.viewpagerlayoutmanager.ViewPagerLayoutManager;
+import com.yinuo.commonlibtest.R;
+
+
+/**
+ * Created by Dajavu on 26/10/2017.
+ */
+
+public abstract class BaseActivity<V extends ViewPagerLayoutManager, S extends SettingPopUpWindow>
+        extends AppCompatActivity {
+    private RecyclerView recyclerView;
+    private V viewPagerLayoutManager;
+    private S settingPopUpWindow;
+
+    protected abstract V createLayoutManager();
+
+    protected abstract S createSettingPopUpWindow();
+
+    @Override
+    protected void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_base);
+        setTitle(getIntent().getCharSequenceExtra(VariousRvDemoActivity.INTENT_TITLE));
+        recyclerView = findViewById(R.id.recycler);
+        viewPagerLayoutManager = createLayoutManager();
+        DataAdapter dataAdapter = new DataAdapter();
+        dataAdapter.setOnItemClickListener(new DataAdapter.OnItemClickListener() {
+            @Override
+            public void onItemClick(View v, int pos) {
+                Toast.makeText(v.getContext(), "clicked:" + pos, Toast.LENGTH_SHORT).show();
+                ScrollHelper.smoothScrollToTargetView(recyclerView, v);
+            }
+        });
+        recyclerView.setAdapter(dataAdapter);
+        recyclerView.setLayoutManager(viewPagerLayoutManager);
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        getMenuInflater().inflate(R.menu.settings, menu);
+        MenuItem settings = menu.findItem(R.id.setting);
+        VectorDrawableCompat settingIcon =
+                VectorDrawableCompat.create(getResources(), R.drawable.ic_settings_white_48px, null);
+        settings.setIcon(settingIcon);
+        return super.onCreateOptionsMenu(menu);
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch (item.getItemId()) {
+            case R.id.setting:
+                showDialog();
+                return true;
+            case android.R.id.home:
+                onBackPressed();
+                return true;
+            default:
+                return super.onOptionsItemSelected(item);
+        }
+    }
+
+    private void showDialog() {
+        if (settingPopUpWindow == null) {
+            settingPopUpWindow = createSettingPopUpWindow();
+        }
+        settingPopUpWindow.showAtLocation(recyclerView, Gravity.CENTER, 0, 0);
+    }
+
+    public V getViewPagerLayoutManager() {
+        return viewPagerLayoutManager;
+    }
+
+    public S getSettingPopUpWindow() {
+        return settingPopUpWindow;
+    }
+
+    public RecyclerView getRecyclerView() {
+        return recyclerView;
+    }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+        if (settingPopUpWindow != null && settingPopUpWindow.isShowing())
+            settingPopUpWindow.dismiss();
+    }
+}

app/src/main/java/com/common/commonlibtest/viewpagerlayoutmanager/DataAdapter.java

@@ -0,0 +1,58 @@
+package com.common.commonlibtest.viewpagerlayoutmanager;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.yinuo.commonlibtest.R;
+
+public class DataAdapter extends RecyclerView.Adapter<DataAdapter.ViewHolder> {
+    public OnItemClickListener onItemClickListener;
+    private int[] images = {R.drawable.item1, R.drawable.item2, R.drawable.item3,
+            R.drawable.item4, R.drawable.item5, R.drawable.item6, R.drawable.item7,
+            R.drawable.item8, R.drawable.item9};
+
+    @Override
+    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
+        return new ViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.item_image, parent, false));
+    }
+
+    @Override
+    public void onBindViewHolder(ViewHolder holder, int position) {
+        holder.imageView.setImageResource(images[position]);
+        holder.imageView.setTag(position);
+    }
+
+    @Override
+    public int getItemCount() {
+        return images.length;
+    }
+
+    public void setOnItemClickListener(OnItemClickListener onItemClickListener) {
+        this.onItemClickListener = onItemClickListener;
+    }
+
+    public interface OnItemClickListener {
+        void onItemClick(View v, int pos);
+    }
+
+    class ViewHolder extends RecyclerView.ViewHolder {
+        ImageView imageView;
+
+        ViewHolder(View itemView) {
+            super(itemView);
+            imageView = itemView.findViewById(R.id.image);
+            itemView.setOnClickListener(new View.OnClickListener() {
+                @Override
+                public void onClick(View v) {
+                    if (onItemClickListener != null) {
+                        onItemClickListener.onItemClick(v, getAdapterPosition());
+                    }
+                }
+            });
+        }
+    }
+}

app/src/main/java/com/common/commonlibtest/viewpagerlayoutmanager/SettingPopUpWindow.java

@@ -0,0 +1,18 @@
+package com.common.commonlibtest.viewpagerlayoutmanager;
+
+import android.content.Context;
+import android.view.WindowManager;
+import android.widget.PopupWindow;
+
+/**
+ * Created by Dajavu on 26/10/2017.
+ */
+
+public abstract class SettingPopUpWindow extends PopupWindow {
+    public SettingPopUpWindow(Context context) {
+        super(context);
+        setOutsideTouchable(true);
+        setWidth(Util.Dp2px(context, 320));
+        setHeight(WindowManager.LayoutParams.WRAP_CONTENT);
+    }
+}

app/src/main/java/com/common/commonlibtest/viewpagerlayoutmanager/Util.java

@@ -0,0 +1,20 @@
+package com.common.commonlibtest.viewpagerlayoutmanager;
+
+import android.content.Context;
+
+import java.util.Locale;
+
+/**
+ * Created by Dajavu on 25/10/2017.
+ */
+
+public class Util {
+    public static int Dp2px(Context context, float dp) {
+        final float scale = context.getResources().getDisplayMetrics().density;
+        return (int) (dp * scale + 0.5f);
+    }
+
+    public static String formatFloat(float value) {
+        return String.format(Locale.getDefault(), "%.3f", value);
+    }
+}

app/src/main/java/com/common/commonlibtest/viewpagerlayoutmanager/VariousRvDemoActivity.java

@@ -0,0 +1,66 @@
+package com.common.commonlibtest.viewpagerlayoutmanager;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.View;
+
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.appcompat.widget.AppCompatButton;
+
+import com.common.commonlibtest.viewpagerlayoutmanager.carousel.CarouselLayoutActivity;
+import com.common.commonlibtest.viewpagerlayoutmanager.circle.CircleLayoutActivity;
+import com.common.commonlibtest.viewpagerlayoutmanager.circlescale.CircleScaleLayoutActivity;
+import com.common.commonlibtest.viewpagerlayoutmanager.gallery.GalleryLayoutActivity;
+import com.common.commonlibtest.viewpagerlayoutmanager.rotate.RotateLayoutActivity;
+import com.common.commonlibtest.viewpagerlayoutmanager.scale.ScaleLayoutActivity;
+import com.yinuo.commonlibtest.R;
+
+
+public class VariousRvDemoActivity extends AppCompatActivity implements View.OnClickListener {
+    public final static String INTENT_TITLE = "title";
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.variois_rv_layout);
+        findViewById(R.id.bt_circle).setOnClickListener(this);
+        findViewById(R.id.bt_circle_scale).setOnClickListener(this);
+        findViewById(R.id.bt_elevate_scale).setOnClickListener(this);
+        findViewById(R.id.bt_gallery).setOnClickListener(this);
+        findViewById(R.id.bt_rotate).setOnClickListener(this);
+        findViewById(R.id.bt_scale).setOnClickListener(this);
+
+    }
+
+    @Override
+    public void onClick(View v) {
+        switch (v.getId()) {
+            case R.id.bt_circle:
+                startActivity(CircleLayoutActivity.class, v);
+                break;
+            case R.id.bt_circle_scale:
+                startActivity(CircleScaleLayoutActivity.class, v);
+                break;
+            case R.id.bt_elevate_scale:
+                startActivity(CarouselLayoutActivity.class, v);
+                break;
+            case R.id.bt_gallery:
+                startActivity(GalleryLayoutActivity.class, v);
+                break;
+            case R.id.bt_rotate:
+                startActivity(RotateLayoutActivity.class, v);
+                break;
+            case R.id.bt_scale:
+                startActivity(ScaleLayoutActivity.class, v);
+                break;
+        }
+    }
+
+    private void startActivity(Class clz, View view) {
+        Intent intent = new Intent(this, clz);
+        if (view instanceof AppCompatButton) {
+            intent.putExtra(INTENT_TITLE, ((AppCompatButton) view).getText());
+        }
+        startActivity(intent);
+    }
+}

app/src/main/java/com/common/commonlibtest/viewpagerlayoutmanager/carousel/CarouselLayoutActivity.java

@@ -0,0 +1,18 @@
+package com.common.commonlibtest.viewpagerlayoutmanager.carousel;
+
+import com.common.commonlib.view.viewpagerlayoutmanager.CarouselLayoutManager;
+import com.common.commonlibtest.viewpagerlayoutmanager.BaseActivity;
+import com.common.commonlibtest.viewpagerlayoutmanager.Util;
+
+public class CarouselLayoutActivity extends BaseActivity<CarouselLayoutManager, CarouselPopUpWindow> {
+
+    @Override
+    protected CarouselLayoutManager createLayoutManager() {
+        return new CarouselLayoutManager(this, Util.Dp2px(this, 100));
+    }
+
+    @Override
+    protected CarouselPopUpWindow createSettingPopUpWindow() {
+        return new CarouselPopUpWindow(this, getViewPagerLayoutManager(), getRecyclerView());
+    }
+}

app/src/main/java/com/common/commonlibtest/viewpagerlayoutmanager/carousel/CarouselPopUpWindow.java

@@ -0,0 +1,136 @@
+package com.common.commonlibtest.viewpagerlayoutmanager.carousel;
+
+import android.annotation.SuppressLint;
+import android.content.Context;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.CompoundButton;
+import android.widget.SeekBar;
+import android.widget.TextView;
+
+import androidx.appcompat.widget.SwitchCompat;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.common.commonlib.view.viewpagerlayoutmanager.CarouselLayoutManager;
+import com.common.commonlib.view.viewpagerlayoutmanager.CenterSnapHelper;
+import com.common.commonlibtest.viewpagerlayoutmanager.SettingPopUpWindow;
+import com.common.commonlibtest.viewpagerlayoutmanager.Util;
+import com.yinuo.commonlibtest.R;
+
+@SuppressLint("InflateParams")
+@SuppressWarnings("FieldCanBeLocal")
+public class CarouselPopUpWindow extends SettingPopUpWindow
+        implements SeekBar.OnSeekBarChangeListener, CompoundButton.OnCheckedChangeListener {
+
+    private CarouselLayoutManager carouselLayoutManager;
+    private RecyclerView recyclerView;
+    private TextView itemSpaceValue;
+    private TextView speedValue;
+    private TextView minScaleValue;
+    private SwitchCompat changeOrientation;
+    private SwitchCompat autoCenter;
+    private SwitchCompat infinite;
+    private SwitchCompat reverse;
+    private CenterSnapHelper centerSnapHelper;
+
+    CarouselPopUpWindow(Context context, CarouselLayoutManager carouselLayoutManager, RecyclerView recyclerView) {
+        super(context);
+        this.carouselLayoutManager = carouselLayoutManager;
+        this.recyclerView = recyclerView;
+        View view = LayoutInflater.from(context).inflate(R.layout.dialog_carousel_setting, null);
+        setContentView(view);
+
+        centerSnapHelper = new CenterSnapHelper();
+
+        SeekBar itemSpace = view.findViewById(R.id.sb_item_space);
+        SeekBar speed = view.findViewById(R.id.sb_speed);
+        SeekBar minScale = view.findViewById(R.id.sb_min_scale);
+
+        itemSpaceValue = view.findViewById(R.id.item_space);
+        speedValue = view.findViewById(R.id.speed_value);
+        minScaleValue = view.findViewById(R.id.min_scale_value);
+
+        changeOrientation = view.findViewById(R.id.s_change_orientation);
+        autoCenter = view.findViewById(R.id.s_auto_center);
+        infinite = view.findViewById(R.id.s_infinite);
+        reverse = view.findViewById(R.id.s_reverse);
+
+        itemSpace.setOnSeekBarChangeListener(this);
+        speed.setOnSeekBarChangeListener(this);
+        minScale.setOnSeekBarChangeListener(this);
+
+        itemSpace.setProgress(carouselLayoutManager.getItemSpace() / 5);
+        speed.setProgress(Math.round(carouselLayoutManager.getMoveSpeed() / 0.05f));
+        minScale.setProgress(Math.round(carouselLayoutManager.getMinScale() * 100));
+
+        itemSpaceValue.setText(String.valueOf(carouselLayoutManager.getItemSpace()));
+        speedValue.setText(Util.formatFloat(carouselLayoutManager.getMoveSpeed()));
+        minScaleValue.setText(Util.formatFloat(carouselLayoutManager.getMinScale()));
+
+        changeOrientation.setChecked(carouselLayoutManager.getOrientation() == RecyclerView.VERTICAL);
+        reverse.setChecked(carouselLayoutManager.getReverseLayout());
+        infinite.setChecked(carouselLayoutManager.getInfinite());
+
+        changeOrientation.setOnCheckedChangeListener(this);
+        autoCenter.setOnCheckedChangeListener(this);
+        reverse.setOnCheckedChangeListener(this);
+        infinite.setOnCheckedChangeListener(this);
+    }
+
+    @Override
+    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
+        switch (seekBar.getId()) {
+            case R.id.sb_item_space:
+                int itemSpace = progress * 5;
+                carouselLayoutManager.setItemSpace(itemSpace);
+                itemSpaceValue.setText(String.valueOf(itemSpace));
+                break;
+            case R.id.sb_min_scale:
+                final float scale = progress / 100f;
+                carouselLayoutManager.setMinScale(scale);
+                minScaleValue.setText(Util.formatFloat(scale));
+                break;
+            case R.id.sb_speed:
+                final float speed = progress * 0.05f;
+                carouselLayoutManager.setMoveSpeed(speed);
+                speedValue.setText(Util.formatFloat(speed));
+                break;
+        }
+    }
+
+    @Override
+    public void onStartTrackingTouch(SeekBar seekBar) {
+
+    }
+
+    @Override
+    public void onStopTrackingTouch(SeekBar seekBar) {
+
+    }
+
+    @Override
+    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
+        switch (buttonView.getId()) {
+            case R.id.s_infinite:
+                recyclerView.scrollToPosition(0);
+                carouselLayoutManager.setInfinite(isChecked);
+                break;
+            case R.id.s_change_orientation:
+                carouselLayoutManager.scrollToPosition(0);
+                carouselLayoutManager.setOrientation(isChecked ?
+                        RecyclerView.VERTICAL : RecyclerView.HORIZONTAL);
+                break;
+            case R.id.s_auto_center:
+                if (isChecked) {
+                    centerSnapHelper.attachToRecyclerView(recyclerView);
+                } else {
+                    centerSnapHelper.attachToRecyclerView(null);
+                }
+                break;
+            case R.id.s_reverse:
+                carouselLayoutManager.scrollToPosition(0);
+                carouselLayoutManager.setReverseLayout(isChecked);
+                break;
+        }
+    }
+}

app/src/main/java/com/common/commonlibtest/viewpagerlayoutmanager/circle/CircleLayoutActivity.java

@@ -0,0 +1,22 @@
+package com.common.commonlibtest.viewpagerlayoutmanager.circle;
+
+
+import com.common.commonlib.view.viewpagerlayoutmanager.CircleLayoutManager;
+import com.common.commonlibtest.viewpagerlayoutmanager.BaseActivity;
+
+/**
+ * Created by Dajavu on 25/10/2017.
+ */
+
+public class CircleLayoutActivity extends BaseActivity<CircleLayoutManager, CirclePopUpWindow> {
+
+    @Override
+    protected CircleLayoutManager createLayoutManager() {
+        return new CircleLayoutManager(this);
+    }
+
+    @Override
+    protected CirclePopUpWindow createSettingPopUpWindow() {
+        return new CirclePopUpWindow(this, getViewPagerLayoutManager(), getRecyclerView());
+    }
+}

app/src/main/java/com/common/commonlibtest/viewpagerlayoutmanager/circle/CirclePopUpWindow.java

@@ -0,0 +1,216 @@
+package com.common.commonlibtest.viewpagerlayoutmanager.circle;
+
+import android.annotation.SuppressLint;
+import android.content.Context;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.CompoundButton;
+import android.widget.RadioGroup;
+import android.widget.SeekBar;
+import android.widget.TextView;
+
+import androidx.appcompat.widget.SwitchCompat;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.common.commonlib.view.viewpagerlayoutmanager.CenterSnapHelper;
+import com.common.commonlib.view.viewpagerlayoutmanager.CircleLayoutManager;
+import com.common.commonlibtest.viewpagerlayoutmanager.SettingPopUpWindow;
+import com.common.commonlibtest.viewpagerlayoutmanager.Util;
+import com.yinuo.commonlibtest.R;
+
+
+/**
+ * Created by Dajavu on 25/10/2017.
+ */
+
+@SuppressLint("InflateParams")
+@SuppressWarnings("FieldCanBeLocal")
+class CirclePopUpWindow extends SettingPopUpWindow
+        implements SeekBar.OnSeekBarChangeListener, CompoundButton.OnCheckedChangeListener,
+        RadioGroup.OnCheckedChangeListener {
+
+    private CircleLayoutManager circleLayoutManager;
+    private RecyclerView recyclerView;
+    private TextView radiusValue;
+    private TextView intervalValue;
+    private TextView speedValue;
+    private TextView distanceToBottomValue;
+    private SwitchCompat infinite;
+    private SwitchCompat autoCenter;
+    private SwitchCompat reverse;
+    private SwitchCompat flipRotate;
+    private CenterSnapHelper centerSnapHelper;
+    private RadioGroup gravity;
+    private RadioGroup zAlignment;
+
+    CirclePopUpWindow(Context context, CircleLayoutManager circleLayoutManager, RecyclerView recyclerView) {
+        super(context);
+        this.circleLayoutManager = circleLayoutManager;
+        this.recyclerView = recyclerView;
+        View view = LayoutInflater.from(context).inflate(R.layout.dialog_circle_setting, null);
+        setContentView(view);
+
+        centerSnapHelper = new CenterSnapHelper();
+
+        SeekBar radius = view.findViewById(R.id.sb_radius);
+        SeekBar interval = view.findViewById(R.id.sb_interval);
+        SeekBar speed = view.findViewById(R.id.sb_speed);
+        SeekBar distanceToBottom = view.findViewById(R.id.sb_distance_to_bottom);
+
+        radiusValue = view.findViewById(R.id.radius_value);
+        intervalValue = view.findViewById(R.id.interval_value);
+        speedValue = view.findViewById(R.id.speed_value);
+        distanceToBottomValue = view.findViewById(R.id.distance_to_bottom_value);
+
+        infinite = view.findViewById(R.id.s_infinite);
+        autoCenter = view.findViewById(R.id.s_auto_center);
+        reverse = view.findViewById(R.id.s_reverse);
+        flipRotate = view.findViewById(R.id.s_flip);
+
+        gravity = view.findViewById(R.id.rg_gravity);
+        zAlignment = view.findViewById(R.id.rg_z_alignment);
+
+        radius.setOnSeekBarChangeListener(this);
+        interval.setOnSeekBarChangeListener(this);
+        speed.setOnSeekBarChangeListener(this);
+        distanceToBottom.setOnSeekBarChangeListener(this);
+
+        final int maxRadius = Util.Dp2px(radius.getContext(), 400);
+        radius.setProgress(Math.round(circleLayoutManager.getRadius() * 1f / maxRadius * 100));
+        interval.setProgress(Math.round(circleLayoutManager.getAngleInterval() / 0.9f));
+        speed.setProgress(Math.round(circleLayoutManager.getMoveSpeed() / 0.005f));
+        distanceToBottom.setProgress(circleLayoutManager.getDistanceToBottom() / 10);
+
+        radiusValue.setText(String.valueOf(circleLayoutManager.getRadius()));
+        intervalValue.setText(String.valueOf(circleLayoutManager.getAngleInterval()));
+        speedValue.setText(Util.formatFloat(circleLayoutManager.getMoveSpeed()));
+        distanceToBottomValue.setText(String.valueOf(circleLayoutManager.getDistanceToBottom()));
+
+        infinite.setChecked(circleLayoutManager.getInfinite());
+        reverse.setChecked(circleLayoutManager.getReverseLayout());
+        flipRotate.setChecked(circleLayoutManager.getFlipRotate());
+
+        infinite.setOnCheckedChangeListener(this);
+        autoCenter.setOnCheckedChangeListener(this);
+        reverse.setOnCheckedChangeListener(this);
+        flipRotate.setOnCheckedChangeListener(this);
+
+        switch (circleLayoutManager.getGravity()) {
+            case CircleLayoutManager.LEFT:
+                gravity.check(R.id.rb_left);
+                break;
+            case CircleLayoutManager.RIGHT:
+                gravity.check(R.id.rb_right);
+                break;
+            case CircleLayoutManager.TOP:
+                gravity.check(R.id.rb_top);
+                break;
+            case CircleLayoutManager.BOTTOM:
+                gravity.check(R.id.rb_bottom);
+                break;
+        }
+
+        switch (circleLayoutManager.getZAlignment()) {
+            case CircleLayoutManager.LEFT_ON_TOP:
+                zAlignment.check(R.id.rb_left_on_top);
+                break;
+            case CircleLayoutManager.RIGHT_ON_TOP:
+                zAlignment.check(R.id.rb_right_on_top);
+                break;
+            case CircleLayoutManager.CENTER_ON_TOP:
+                zAlignment.check(R.id.rb_center_on_top);
+                break;
+        }
+
+        gravity.setOnCheckedChangeListener(this);
+        zAlignment.setOnCheckedChangeListener(this);
+    }
+
+    @Override
+    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
+        switch (seekBar.getId()) {
+            case R.id.sb_radius:
+                final int maxRadius = Util.Dp2px(seekBar.getContext(), 400);
+                final int radius = Math.round(progress / 100f * maxRadius);
+                circleLayoutManager.setRadius(radius);
+                radiusValue.setText(String.valueOf(radius));
+                break;
+            case R.id.sb_interval:
+                final int interval = Math.round(progress * 0.9f);
+                circleLayoutManager.setAngleInterval(interval);
+                intervalValue.setText(String.valueOf(interval));
+                break;
+            case R.id.sb_speed:
+                final float speed = progress * 0.005f;
+                circleLayoutManager.setMoveSpeed(speed);
+                speedValue.setText(Util.formatFloat(speed));
+                break;
+            case R.id.sb_distance_to_bottom:
+                final int distance = progress * 10;
+                circleLayoutManager.setDistanceToBottom(distance);
+                distanceToBottomValue.setText(String.valueOf(distance));
+                break;
+        }
+    }
+
+    @Override
+    public void onStartTrackingTouch(SeekBar seekBar) {
+
+    }
+
+    @Override
+    public void onStopTrackingTouch(SeekBar seekBar) {
+
+    }
+
+    @Override
+    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
+        switch (buttonView.getId()) {
+            case R.id.s_infinite:
+                recyclerView.scrollToPosition(0);
+                circleLayoutManager.setInfinite(isChecked);
+                break;
+            case R.id.s_auto_center:
+                if (isChecked) {
+                    centerSnapHelper.attachToRecyclerView(recyclerView);
+                } else {
+                    centerSnapHelper.attachToRecyclerView(null);
+                }
+                break;
+            case R.id.s_reverse:
+                circleLayoutManager.scrollToPosition(0);
+                circleLayoutManager.setReverseLayout(isChecked);
+                break;
+            case R.id.s_flip:
+                circleLayoutManager.setFlipRotate(isChecked);
+                break;
+        }
+    }
+
+    @Override
+    public void onCheckedChanged(RadioGroup group, int checkedId) {
+        switch (checkedId) {
+            case R.id.rb_left:
+                circleLayoutManager.setGravity(CircleLayoutManager.LEFT);
+                break;
+            case R.id.rb_right:
+                circleLayoutManager.setGravity(CircleLayoutManager.RIGHT);
+                break;
+            case R.id.rb_top:
+                circleLayoutManager.setGravity(CircleLayoutManager.TOP);
+                break;
+            case R.id.rb_bottom:
+                circleLayoutManager.setGravity(CircleLayoutManager.BOTTOM);
+                break;
+            case R.id.rb_left_on_top:
+                circleLayoutManager.setZAlignment(CircleLayoutManager.LEFT_ON_TOP);
+                break;
+            case R.id.rb_right_on_top:
+                circleLayoutManager.setZAlignment(CircleLayoutManager.RIGHT_ON_TOP);
+                break;
+            case R.id.rb_center_on_top:
+                circleLayoutManager.setZAlignment(CircleLayoutManager.CENTER_ON_TOP);
+                break;
+        }
+    }
+}

app/src/main/java/com/common/commonlibtest/viewpagerlayoutmanager/circlescale/CircleScaleLayoutActivity.java

@@ -0,0 +1,17 @@
+package com.common.commonlibtest.viewpagerlayoutmanager.circlescale;
+
+import com.common.commonlib.view.viewpagerlayoutmanager.CircleScaleLayoutManager;
+import com.common.commonlibtest.viewpagerlayoutmanager.BaseActivity;
+
+public class CircleScaleLayoutActivity extends BaseActivity<CircleScaleLayoutManager, CircleScalePopUpWindow> {
+
+    @Override
+    protected CircleScaleLayoutManager createLayoutManager() {
+        return new CircleScaleLayoutManager(this);
+    }
+
+    @Override
+    protected CircleScalePopUpWindow createSettingPopUpWindow() {
+        return new CircleScalePopUpWindow(this, getViewPagerLayoutManager(), getRecyclerView());
+    }
+}

app/src/main/java/com/common/commonlibtest/viewpagerlayoutmanager/circlescale/CircleScalePopUpWindow.java

@@ -0,0 +1,211 @@
+package com.common.commonlibtest.viewpagerlayoutmanager.circlescale;
+
+import android.annotation.SuppressLint;
+import android.content.Context;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.CompoundButton;
+import android.widget.RadioGroup;
+import android.widget.SeekBar;
+import android.widget.TextView;
+
+import androidx.appcompat.widget.SwitchCompat;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.common.commonlib.view.viewpagerlayoutmanager.CenterSnapHelper;
+import com.common.commonlib.view.viewpagerlayoutmanager.CircleScaleLayoutManager;
+import com.common.commonlibtest.viewpagerlayoutmanager.SettingPopUpWindow;
+import com.common.commonlibtest.viewpagerlayoutmanager.Util;
+import com.yinuo.commonlibtest.R;
+
+@SuppressLint("InflateParams")
+@SuppressWarnings("FieldCanBeLocal")
+public class CircleScalePopUpWindow extends SettingPopUpWindow
+        implements SeekBar.OnSeekBarChangeListener, CompoundButton.OnCheckedChangeListener,
+        RadioGroup.OnCheckedChangeListener {
+
+    private CircleScaleLayoutManager circleScaleLayoutManager;
+    private RecyclerView recyclerView;
+    private TextView radiusValue;
+    private TextView intervalValue;
+    private TextView speedValue;
+    private TextView centerScaleValue;
+    private SwitchCompat infinite;
+    private SwitchCompat autoCenter;
+    private SwitchCompat reverse;
+    private SwitchCompat flipRotate;
+    private CenterSnapHelper centerSnapHelper;
+    private RadioGroup gravity;
+    private RadioGroup zAlignment;
+
+    CircleScalePopUpWindow(Context context, CircleScaleLayoutManager circleScaleLayoutManager, RecyclerView recyclerView) {
+        super(context);
+        this.circleScaleLayoutManager = circleScaleLayoutManager;
+        this.recyclerView = recyclerView;
+        View view = LayoutInflater.from(context).inflate(R.layout.dialog_circle_scale_setting, null);
+        setContentView(view);
+
+        centerSnapHelper = new CenterSnapHelper();
+
+        SeekBar radius = view.findViewById(R.id.sb_radius);
+        SeekBar interval = view.findViewById(R.id.sb_interval);
+        SeekBar speed = view.findViewById(R.id.sb_speed);
+        SeekBar centerScale = view.findViewById(R.id.sb_center_scale);
+
+        radiusValue = view.findViewById(R.id.radius_value);
+        intervalValue = view.findViewById(R.id.interval_value);
+        speedValue = view.findViewById(R.id.speed_value);
+        centerScaleValue = view.findViewById(R.id.center_scale_value);
+
+        infinite = view.findViewById(R.id.s_infinite);
+        autoCenter = view.findViewById(R.id.s_auto_center);
+        reverse = view.findViewById(R.id.s_reverse);
+        flipRotate = view.findViewById(R.id.s_flip);
+
+        gravity = view.findViewById(R.id.rg_gravity);
+        zAlignment = view.findViewById(R.id.rg_z_alignment);
+
+        radius.setOnSeekBarChangeListener(this);
+        interval.setOnSeekBarChangeListener(this);
+        speed.setOnSeekBarChangeListener(this);
+        centerScale.setOnSeekBarChangeListener(this);
+
+        final int maxRadius = Util.Dp2px(radius.getContext(), 400);
+        radius.setProgress(Math.round(circleScaleLayoutManager.getRadius() * 1f / maxRadius * 100));
+        interval.setProgress(Math.round(circleScaleLayoutManager.getAngleInterval() / 0.9f));
+        speed.setProgress(Math.round(circleScaleLayoutManager.getMoveSpeed() / 0.005f));
+        centerScale.setProgress(Math.round(circleScaleLayoutManager.getCenterScale() * 200f / 3 - 100f / 3));
+
+        radiusValue.setText(String.valueOf(circleScaleLayoutManager.getRadius()));
+        intervalValue.setText(String.valueOf(circleScaleLayoutManager.getAngleInterval()));
+        speedValue.setText(Util.formatFloat(circleScaleLayoutManager.getMoveSpeed()));
+        centerScaleValue.setText(Util.formatFloat(circleScaleLayoutManager.getCenterScale()));
+
+        infinite.setChecked(circleScaleLayoutManager.getInfinite());
+        reverse.setChecked(circleScaleLayoutManager.getReverseLayout());
+        flipRotate.setChecked(circleScaleLayoutManager.getFlipRotate());
+
+        infinite.setOnCheckedChangeListener(this);
+        autoCenter.setOnCheckedChangeListener(this);
+        reverse.setOnCheckedChangeListener(this);
+        flipRotate.setOnCheckedChangeListener(this);
+
+        switch (circleScaleLayoutManager.getGravity()) {
+            case CircleScaleLayoutManager.LEFT:
+                gravity.check(R.id.rb_left);
+                break;
+            case CircleScaleLayoutManager.RIGHT:
+                gravity.check(R.id.rb_right);
+                break;
+            case CircleScaleLayoutManager.TOP:
+                gravity.check(R.id.rb_top);
+                break;
+            case CircleScaleLayoutManager.BOTTOM:
+                gravity.check(R.id.rb_bottom);
+                break;
+        }
+
+        switch (circleScaleLayoutManager.getZAlignment()) {
+            case CircleScaleLayoutManager.LEFT_ON_TOP:
+                zAlignment.check(R.id.rb_left_on_top);
+                break;
+            case CircleScaleLayoutManager.RIGHT_ON_TOP:
+                zAlignment.check(R.id.rb_right_on_top);
+                break;
+            case CircleScaleLayoutManager.CENTER_ON_TOP:
+                zAlignment.check(R.id.rb_center_on_top);
+                break;
+        }
+
+        gravity.setOnCheckedChangeListener(this);
+        zAlignment.setOnCheckedChangeListener(this);
+    }
+
+    @Override
+    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
+        switch (seekBar.getId()) {
+            case R.id.sb_radius:
+                final int maxRadius = Util.Dp2px(seekBar.getContext(), 400);
+                final int radius = Math.round(progress / 100f * maxRadius);
+                circleScaleLayoutManager.setRadius(radius);
+                radiusValue.setText(String.valueOf(radius));
+                break;
+            case R.id.sb_interval:
+                final int interval = Math.round(progress * 0.9f);
+                circleScaleLayoutManager.setAngleInterval(interval);
+                intervalValue.setText(String.valueOf(interval));
+                break;
+            case R.id.sb_center_scale:
+                final float scale = (progress + 100f / 3) * 3 / 200;
+                circleScaleLayoutManager.setCenterScale(scale);
+                centerScaleValue.setText(Util.formatFloat(scale));
+                break;
+            case R.id.sb_speed:
+                final float speed = progress * 0.005f;
+                circleScaleLayoutManager.setMoveSpeed(speed);
+                speedValue.setText(Util.formatFloat(speed));
+                break;
+        }
+    }
+
+    @Override
+    public void onStartTrackingTouch(SeekBar seekBar) {
+
+    }
+
+    @Override
+    public void onStopTrackingTouch(SeekBar seekBar) {
+
+    }
+
+    @Override
+    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
+        switch (buttonView.getId()) {
+            case R.id.s_infinite:
+                recyclerView.scrollToPosition(0);
+                circleScaleLayoutManager.setInfinite(isChecked);
+                break;
+            case R.id.s_auto_center:
+                if (isChecked) {
+                    centerSnapHelper.attachToRecyclerView(recyclerView);
+                } else {
+                    centerSnapHelper.attachToRecyclerView(null);
+                }
+                break;
+            case R.id.s_reverse:
+                circleScaleLayoutManager.scrollToPosition(0);
+                circleScaleLayoutManager.setReverseLayout(isChecked);
+                break;
+            case R.id.s_flip:
+                circleScaleLayoutManager.setFlipRotate(isChecked);
+                break;
+        }
+    }
+
+    @Override
+    public void onCheckedChanged(RadioGroup group, int checkedId) {
+        switch (checkedId) {
+            case R.id.rb_left:
+                circleScaleLayoutManager.setGravity(CircleScaleLayoutManager.LEFT);
+                break;
+            case R.id.rb_right:
+                circleScaleLayoutManager.setGravity(CircleScaleLayoutManager.RIGHT);
+                break;
+            case R.id.rb_top:
+                circleScaleLayoutManager.setGravity(CircleScaleLayoutManager.TOP);
+                break;
+            case R.id.rb_bottom:
+                circleScaleLayoutManager.setGravity(CircleScaleLayoutManager.BOTTOM);
+                break;
+            case R.id.rb_left_on_top:
+                circleScaleLayoutManager.setZAlignment(CircleScaleLayoutManager.LEFT_ON_TOP);
+                break;
+            case R.id.rb_right_on_top:
+                circleScaleLayoutManager.setZAlignment(CircleScaleLayoutManager.RIGHT_ON_TOP);
+                break;
+            case R.id.rb_center_on_top:
+                circleScaleLayoutManager.setZAlignment(CircleScaleLayoutManager.CENTER_ON_TOP);
+                break;
+        }
+    }
+}

app/src/main/java/com/common/commonlibtest/viewpagerlayoutmanager/gallery/GalleryLayoutActivity.java

@@ -0,0 +1,19 @@
+package com.common.commonlibtest.viewpagerlayoutmanager.gallery;
+
+
+import com.common.commonlib.view.viewpagerlayoutmanager.GalleryLayoutManager;
+import com.common.commonlibtest.viewpagerlayoutmanager.BaseActivity;
+import com.common.commonlibtest.viewpagerlayoutmanager.Util;
+
+public class GalleryLayoutActivity extends BaseActivity<GalleryLayoutManager, GalleryPopUpWindow> {
+
+    @Override
+    protected GalleryLayoutManager createLayoutManager() {
+        return new GalleryLayoutManager(this, Util.Dp2px(this, 10));
+    }
+
+    @Override
+    protected GalleryPopUpWindow createSettingPopUpWindow() {
+        return new GalleryPopUpWindow(this, getViewPagerLayoutManager(), getRecyclerView());
+    }
+}

app/src/main/java/com/common/commonlibtest/viewpagerlayoutmanager/gallery/GalleryPopUpWindow.java

@@ -0,0 +1,178 @@
+package com.common.commonlibtest.viewpagerlayoutmanager.gallery;
+
+import android.annotation.SuppressLint;
+import android.content.Context;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.CompoundButton;
+import android.widget.SeekBar;
+import android.widget.TextView;
+
+import androidx.appcompat.widget.SwitchCompat;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.common.commonlib.view.viewpagerlayoutmanager.CenterSnapHelper;
+import com.common.commonlib.view.viewpagerlayoutmanager.GalleryLayoutManager;
+import com.common.commonlibtest.viewpagerlayoutmanager.SettingPopUpWindow;
+import com.common.commonlibtest.viewpagerlayoutmanager.Util;
+import com.yinuo.commonlibtest.R;
+
+@SuppressLint("InflateParams")
+@SuppressWarnings("FieldCanBeLocal")
+public class GalleryPopUpWindow extends SettingPopUpWindow
+        implements SeekBar.OnSeekBarChangeListener, CompoundButton.OnCheckedChangeListener {
+
+    private GalleryLayoutManager galleryLayoutManager;
+    private RecyclerView recyclerView;
+    private TextView itemSpaceValue;
+    private TextView speedValue;
+    private TextView minAlphaValue;
+    private TextView maxAlphaValue;
+    private TextView angleValue;
+    private SwitchCompat centerInFront;
+    private SwitchCompat changeOrientation;
+    private SwitchCompat autoCenter;
+    private SwitchCompat infinite;
+    private SwitchCompat reverse;
+    private SwitchCompat flipRotate;
+    private SwitchCompat rotateFromEdge;
+    private CenterSnapHelper centerSnapHelper;
+
+    GalleryPopUpWindow(Context context, GalleryLayoutManager galleryLayoutManager, RecyclerView recyclerView) {
+        super(context);
+        this.galleryLayoutManager = galleryLayoutManager;
+        this.recyclerView = recyclerView;
+        View view = LayoutInflater.from(context).inflate(R.layout.dialog_gallery_setting, null);
+        setContentView(view);
+
+        centerSnapHelper = new CenterSnapHelper();
+
+        SeekBar itemSpace = view.findViewById(R.id.sb_item_space);
+        SeekBar speed = view.findViewById(R.id.sb_speed);
+        SeekBar minAlpha = view.findViewById(R.id.sb_min_alpha);
+        SeekBar maxAlpha = view.findViewById(R.id.sb_max_alpha);
+        SeekBar angle = view.findViewById(R.id.sb_interval);
+
+        itemSpaceValue = view.findViewById(R.id.item_space);
+        speedValue = view.findViewById(R.id.speed_value);
+        minAlphaValue = view.findViewById(R.id.min_alpha_value);
+        maxAlphaValue = view.findViewById(R.id.max_alpha_value);
+        angleValue = view.findViewById(R.id.angle_value);
+
+        centerInFront = view.findViewById(R.id.s_center_in_front);
+        changeOrientation = view.findViewById(R.id.s_change_orientation);
+        autoCenter = view.findViewById(R.id.s_auto_center);
+        infinite = view.findViewById(R.id.s_infinite);
+        reverse = view.findViewById(R.id.s_reverse);
+        flipRotate = view.findViewById(R.id.s_flip);
+        rotateFromEdge = view.findViewById(R.id.s_rotate_from_edge);
+
+        itemSpace.setOnSeekBarChangeListener(this);
+        speed.setOnSeekBarChangeListener(this);
+        minAlpha.setOnSeekBarChangeListener(this);
+        maxAlpha.setOnSeekBarChangeListener(this);
+        angle.setOnSeekBarChangeListener(this);
+
+        itemSpace.setProgress(galleryLayoutManager.getItemSpace() / 8 + 50);
+        speed.setProgress(Math.round(galleryLayoutManager.getMoveSpeed() / 0.05f));
+        maxAlpha.setProgress(Math.round(galleryLayoutManager.getMaxAlpha() * 100));
+        minAlpha.setProgress(Math.round(galleryLayoutManager.getMinAlpha() * 100));
+        angle.setProgress(Math.round(galleryLayoutManager.getAngle() / 0.9f));
+
+        itemSpaceValue.setText(String.valueOf(galleryLayoutManager.getItemSpace()));
+        speedValue.setText(Util.formatFloat(galleryLayoutManager.getMoveSpeed()));
+        minAlphaValue.setText(Util.formatFloat(galleryLayoutManager.getMinAlpha()));
+        maxAlphaValue.setText(Util.formatFloat(galleryLayoutManager.getMaxAlpha()));
+        angleValue.setText(Util.formatFloat(galleryLayoutManager.getAngle()));
+
+        centerInFront.setChecked(galleryLayoutManager.getEnableBringCenterToFront());
+        changeOrientation.setChecked(galleryLayoutManager.getOrientation() == RecyclerView.VERTICAL);
+        reverse.setChecked(galleryLayoutManager.getReverseLayout());
+        flipRotate.setChecked(galleryLayoutManager.getFlipRotate());
+        rotateFromEdge.setChecked(galleryLayoutManager.getRotateFromEdge());
+        infinite.setChecked(galleryLayoutManager.getInfinite());
+
+        centerInFront.setOnCheckedChangeListener(this);
+        changeOrientation.setOnCheckedChangeListener(this);
+        autoCenter.setOnCheckedChangeListener(this);
+        reverse.setOnCheckedChangeListener(this);
+        flipRotate.setOnCheckedChangeListener(this);
+        rotateFromEdge.setOnCheckedChangeListener(this);
+        infinite.setOnCheckedChangeListener(this);
+    }
+
+    @Override
+    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
+        switch (seekBar.getId()) {
+            case R.id.sb_item_space:
+                int itemSpace = (progress - 50) * 8;
+                galleryLayoutManager.setItemSpace(itemSpace);
+                itemSpaceValue.setText(String.valueOf(itemSpace));
+                break;
+            case R.id.sb_speed:
+                final float speed = progress * 0.05f;
+                galleryLayoutManager.setMoveSpeed(speed);
+                speedValue.setText(Util.formatFloat(speed));
+                break;
+            case R.id.sb_interval:
+                final int angle = Math.round(progress * 0.9f);
+                galleryLayoutManager.setAngle(angle);
+                angleValue.setText(String.valueOf(angle));
+                break;
+            case R.id.sb_max_alpha:
+                final float maxAlpha = progress / 100f;
+                galleryLayoutManager.setMaxAlpha(maxAlpha);
+                maxAlphaValue.setText(Util.formatFloat(maxAlpha));
+                break;
+            case R.id.sb_min_alpha:
+                final float minAlpha = progress / 100f;
+                galleryLayoutManager.setMinAlpha(minAlpha);
+                minAlphaValue.setText(Util.formatFloat(minAlpha));
+                break;
+        }
+    }
+
+    @Override
+    public void onStartTrackingTouch(SeekBar seekBar) {
+
+    }
+
+    @Override
+    public void onStopTrackingTouch(SeekBar seekBar) {
+
+    }
+
+    @Override
+    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
+        switch (buttonView.getId()) {
+            case R.id.s_infinite:
+                recyclerView.scrollToPosition(0);
+                galleryLayoutManager.setInfinite(isChecked);
+                break;
+            case R.id.s_change_orientation:
+                galleryLayoutManager.scrollToPosition(0);
+                galleryLayoutManager.setOrientation(isChecked ?
+                        RecyclerView.VERTICAL : RecyclerView.HORIZONTAL);
+                break;
+            case R.id.s_auto_center:
+                if (isChecked) {
+                    centerSnapHelper.attachToRecyclerView(recyclerView);
+                } else {
+                    centerSnapHelper.attachToRecyclerView(null);
+                }
+                break;
+            case R.id.s_reverse:
+                galleryLayoutManager.scrollToPosition(0);
+                galleryLayoutManager.setReverseLayout(isChecked);
+                break;
+            case R.id.s_flip:
+                galleryLayoutManager.setFlipRotate(isChecked);
+            case R.id.s_center_in_front:
+                galleryLayoutManager.setEnableBringCenterToFront(isChecked);
+                break;
+            case R.id.s_rotate_from_edge:
+                galleryLayoutManager.setRotateFromEdge(isChecked);
+                break;
+        }
+    }
+}

app/src/main/java/com/common/commonlibtest/viewpagerlayoutmanager/rotate/RotateLayoutActivity.java

@@ -0,0 +1,19 @@
+package com.common.commonlibtest.viewpagerlayoutmanager.rotate;
+
+
+import com.common.commonlib.view.viewpagerlayoutmanager.RotateLayoutManager;
+import com.common.commonlibtest.viewpagerlayoutmanager.BaseActivity;
+import com.common.commonlibtest.viewpagerlayoutmanager.Util;
+
+public class RotateLayoutActivity extends BaseActivity<RotateLayoutManager, RotatePopUpWindow> {
+
+    @Override
+    protected RotateLayoutManager createLayoutManager() {
+        return new RotateLayoutManager(this, Util.Dp2px(this, 10));
+    }
+
+    @Override
+    protected RotatePopUpWindow createSettingPopUpWindow() {
+        return new RotatePopUpWindow(this, getViewPagerLayoutManager(), getRecyclerView());
+    }
+}

app/src/main/java/com/common/commonlibtest/viewpagerlayoutmanager/rotate/RotatePopUpWindow.java

@@ -0,0 +1,143 @@
+package com.common.commonlibtest.viewpagerlayoutmanager.rotate;
+
+import android.annotation.SuppressLint;
+import android.content.Context;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.CompoundButton;
+import android.widget.SeekBar;
+import android.widget.TextView;
+
+import androidx.appcompat.widget.SwitchCompat;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.common.commonlib.view.viewpagerlayoutmanager.CenterSnapHelper;
+import com.common.commonlib.view.viewpagerlayoutmanager.RotateLayoutManager;
+import com.common.commonlibtest.viewpagerlayoutmanager.SettingPopUpWindow;
+import com.common.commonlibtest.viewpagerlayoutmanager.Util;
+import com.yinuo.commonlibtest.R;
+
+@SuppressLint("InflateParams")
+@SuppressWarnings("FieldCanBeLocal")
+public class RotatePopUpWindow extends SettingPopUpWindow
+        implements SeekBar.OnSeekBarChangeListener, CompoundButton.OnCheckedChangeListener {
+
+    private RotateLayoutManager rotateLayoutManager;
+    private RecyclerView recyclerView;
+    private TextView itemSpaceValue;
+    private TextView speedValue;
+    private TextView angleValue;
+    private SwitchCompat changeOrientation;
+    private SwitchCompat autoCenter;
+    private SwitchCompat infinite;
+    private SwitchCompat reverseRotate;
+    private SwitchCompat reverse;
+    private CenterSnapHelper centerSnapHelper;
+
+    RotatePopUpWindow(Context context, RotateLayoutManager rotateLayoutManager, RecyclerView recyclerView) {
+        super(context);
+        this.rotateLayoutManager = rotateLayoutManager;
+        this.recyclerView = recyclerView;
+        View view = LayoutInflater.from(context).inflate(R.layout.dialog_rotate_setting, null);
+        setContentView(view);
+
+        centerSnapHelper = new CenterSnapHelper();
+
+        SeekBar itemSpace = view.findViewById(R.id.sb_item_space);
+        SeekBar speed = view.findViewById(R.id.sb_speed);
+        SeekBar angle = view.findViewById(R.id.sb_angle);
+
+        itemSpaceValue = view.findViewById(R.id.item_space);
+        speedValue = view.findViewById(R.id.speed_value);
+        angleValue = view.findViewById(R.id.angle_value);
+
+        reverseRotate = view.findViewById(R.id.s_reverse_rotate);
+        changeOrientation = view.findViewById(R.id.s_change_orientation);
+        autoCenter = view.findViewById(R.id.s_auto_center);
+        infinite = view.findViewById(R.id.s_infinite);
+        reverse = view.findViewById(R.id.s_reverse);
+
+        itemSpace.setOnSeekBarChangeListener(this);
+        speed.setOnSeekBarChangeListener(this);
+        angle.setOnSeekBarChangeListener(this);
+
+        itemSpace.setProgress(rotateLayoutManager.getItemSpace() / 2);
+        speed.setProgress(Math.round(rotateLayoutManager.getMoveSpeed() / 0.05f));
+        angle.setProgress(Math.round(rotateLayoutManager.getAngle() / 360 * 100));
+
+        itemSpaceValue.setText(String.valueOf(rotateLayoutManager.getItemSpace()));
+        speedValue.setText(Util.formatFloat(rotateLayoutManager.getMoveSpeed()));
+        angleValue.setText(Util.formatFloat(rotateLayoutManager.getAngle()));
+
+        reverseRotate.setChecked(rotateLayoutManager.getEnableBringCenterToFront());
+        changeOrientation.setChecked(rotateLayoutManager.getOrientation() == RecyclerView.VERTICAL);
+        reverse.setChecked(rotateLayoutManager.getReverseLayout());
+        infinite.setChecked(rotateLayoutManager.getInfinite());
+
+        reverseRotate.setOnCheckedChangeListener(this);
+        changeOrientation.setOnCheckedChangeListener(this);
+        autoCenter.setOnCheckedChangeListener(this);
+        reverse.setOnCheckedChangeListener(this);
+        infinite.setOnCheckedChangeListener(this);
+    }
+
+    @Override
+    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
+        switch (seekBar.getId()) {
+            case R.id.sb_item_space:
+                int itemSpace = progress * 2;
+                rotateLayoutManager.setItemSpace(itemSpace);
+                itemSpaceValue.setText(String.valueOf(itemSpace));
+                break;
+            case R.id.sb_angle:
+                final float angle = progress / 100f * 360;
+                rotateLayoutManager.setAngle(angle);
+                angleValue.setText(Util.formatFloat(angle));
+                break;
+            case R.id.sb_speed:
+                final float speed = progress * 0.05f;
+                rotateLayoutManager.setMoveSpeed(speed);
+                speedValue.setText(Util.formatFloat(speed));
+                break;
+        }
+    }
+
+    @Override
+    public void onStartTrackingTouch(SeekBar seekBar) {
+
+    }
+
+    @Override
+    public void onStopTrackingTouch(SeekBar seekBar) {
+
+    }
+
+    @Override
+    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
+        switch (buttonView.getId()) {
+            case R.id.s_infinite:
+                recyclerView.scrollToPosition(0);
+                rotateLayoutManager.setInfinite(isChecked);
+                break;
+            case R.id.s_change_orientation:
+                rotateLayoutManager.scrollToPosition(0);
+                rotateLayoutManager.setOrientation(isChecked ?
+                        RecyclerView.VERTICAL : RecyclerView.HORIZONTAL);
+                break;
+            case R.id.s_auto_center:
+                if (isChecked) {
+                    centerSnapHelper.attachToRecyclerView(recyclerView);
+                } else {
+                    centerSnapHelper.attachToRecyclerView(null);
+                }
+                break;
+            case R.id.s_reverse_rotate:
+                rotateLayoutManager.setReverseRotate(isChecked);
+                break;
+            case R.id.s_reverse:
+                rotateLayoutManager.scrollToPosition(0);
+                rotateLayoutManager.setReverseLayout(isChecked);
+                break;
+        }
+    }
+}

app/src/main/java/com/common/commonlibtest/viewpagerlayoutmanager/scale/ScaleLayoutActivity.java

@@ -0,0 +1,19 @@
+package com.common.commonlibtest.viewpagerlayoutmanager.scale;
+
+
+import com.common.commonlib.view.viewpagerlayoutmanager.ScaleLayoutManager;
+import com.common.commonlibtest.viewpagerlayoutmanager.BaseActivity;
+import com.common.commonlibtest.viewpagerlayoutmanager.Util;
+
+public class ScaleLayoutActivity extends BaseActivity<ScaleLayoutManager, ScalePopUpWindow> {
+
+    @Override
+    protected ScaleLayoutManager createLayoutManager() {
+        return new ScaleLayoutManager(this, Util.Dp2px(this, 10));
+    }
+
+    @Override
+    protected ScalePopUpWindow createSettingPopUpWindow() {
+        return new ScalePopUpWindow(this, getViewPagerLayoutManager(), getRecyclerView());
+    }
+}

app/src/main/java/com/common/commonlibtest/viewpagerlayoutmanager/scale/ScalePopUpWindow.java

@@ -0,0 +1,158 @@
+package com.common.commonlibtest.viewpagerlayoutmanager.scale;
+
+import android.annotation.SuppressLint;
+import android.content.Context;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.CompoundButton;
+import android.widget.SeekBar;
+import android.widget.TextView;
+
+import androidx.appcompat.widget.SwitchCompat;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.common.commonlib.view.viewpagerlayoutmanager.CenterSnapHelper;
+import com.common.commonlib.view.viewpagerlayoutmanager.ScaleLayoutManager;
+import com.common.commonlibtest.viewpagerlayoutmanager.SettingPopUpWindow;
+import com.common.commonlibtest.viewpagerlayoutmanager.Util;
+import com.yinuo.commonlibtest.R;
+
+@SuppressLint("InflateParams")
+@SuppressWarnings("FieldCanBeLocal")
+public class ScalePopUpWindow extends SettingPopUpWindow
+        implements SeekBar.OnSeekBarChangeListener, CompoundButton.OnCheckedChangeListener {
+
+    private ScaleLayoutManager scaleLayoutManager;
+    private RecyclerView recyclerView;
+    private TextView itemSpaceValue;
+    private TextView speedValue;
+    private TextView minScaleValue;
+    private TextView minAlphaValue;
+    private TextView maxAlphaValue;
+    private SwitchCompat changeOrientation;
+    private SwitchCompat autoCenter;
+    private SwitchCompat infinite;
+    private SwitchCompat reverse;
+    private CenterSnapHelper centerSnapHelper;
+
+    ScalePopUpWindow(Context context, ScaleLayoutManager scaleLayoutManager, RecyclerView recyclerView) {
+        super(context);
+        this.scaleLayoutManager = scaleLayoutManager;
+        this.recyclerView = recyclerView;
+        View view = LayoutInflater.from(context).inflate(R.layout.dialog_scale_setting, null);
+        setContentView(view);
+
+        centerSnapHelper = new CenterSnapHelper();
+
+        SeekBar itemSpace = view.findViewById(R.id.sb_item_space);
+        SeekBar speed = view.findViewById(R.id.sb_speed);
+        SeekBar minScale = view.findViewById(R.id.sb_min_scale);
+        SeekBar minAlpha = view.findViewById(R.id.sb_min_alpha);
+        SeekBar maxAlpha = view.findViewById(R.id.sb_max_alpha);
+
+        itemSpaceValue = view.findViewById(R.id.item_space);
+        speedValue = view.findViewById(R.id.speed_value);
+        minScaleValue = view.findViewById(R.id.min_scale_value);
+        minAlphaValue = view.findViewById(R.id.min_alpha_value);
+        maxAlphaValue = view.findViewById(R.id.max_alpha_value);
+
+        changeOrientation = view.findViewById(R.id.s_change_orientation);
+        autoCenter = view.findViewById(R.id.s_auto_center);
+        infinite = view.findViewById(R.id.s_infinite);
+        reverse = view.findViewById(R.id.s_reverse);
+
+        itemSpace.setOnSeekBarChangeListener(this);
+        speed.setOnSeekBarChangeListener(this);
+        minScale.setOnSeekBarChangeListener(this);
+        minAlpha.setOnSeekBarChangeListener(this);
+        maxAlpha.setOnSeekBarChangeListener(this);
+
+        itemSpace.setProgress(scaleLayoutManager.getItemSpace() / 2);
+        speed.setProgress(Math.round(scaleLayoutManager.getMoveSpeed() / 0.05f));
+        minScale.setProgress(Math.round((scaleLayoutManager.getMinScale() - 0.5f) * 200));
+        maxAlpha.setProgress(Math.round(scaleLayoutManager.getMaxAlpha() * 100));
+        minAlpha.setProgress(Math.round(scaleLayoutManager.getMinAlpha() * 100));
+
+        itemSpaceValue.setText(String.valueOf(scaleLayoutManager.getItemSpace()));
+        speedValue.setText(Util.formatFloat(scaleLayoutManager.getMoveSpeed()));
+        minScaleValue.setText(Util.formatFloat(scaleLayoutManager.getMinScale()));
+        minAlphaValue.setText(Util.formatFloat(scaleLayoutManager.getMinAlpha()));
+        maxAlphaValue.setText(Util.formatFloat(scaleLayoutManager.getMaxAlpha()));
+
+        changeOrientation.setChecked(scaleLayoutManager.getOrientation() == RecyclerView.VERTICAL);
+        reverse.setChecked(scaleLayoutManager.getReverseLayout());
+        infinite.setChecked(scaleLayoutManager.getInfinite());
+
+        changeOrientation.setOnCheckedChangeListener(this);
+        autoCenter.setOnCheckedChangeListener(this);
+        reverse.setOnCheckedChangeListener(this);
+        infinite.setOnCheckedChangeListener(this);
+    }
+
+    @Override
+    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
+        switch (seekBar.getId()) {
+            case R.id.sb_item_space:
+                int itemSpace = progress * 2;
+                scaleLayoutManager.setItemSpace(itemSpace);
+                itemSpaceValue.setText(String.valueOf(itemSpace));
+                break;
+            case R.id.sb_min_scale:
+                final float scale = 0.5f + (progress / 200f);
+                scaleLayoutManager.setMinScale(scale);
+                minScaleValue.setText(Util.formatFloat(scale));
+                break;
+            case R.id.sb_speed:
+                final float speed = progress * 0.05f;
+                scaleLayoutManager.setMoveSpeed(speed);
+                speedValue.setText(Util.formatFloat(speed));
+                break;
+            case R.id.sb_max_alpha:
+                final float maxAlpha = progress / 100f;
+                scaleLayoutManager.setMaxAlpha(maxAlpha);
+                maxAlphaValue.setText(Util.formatFloat(maxAlpha));
+                break;
+            case R.id.sb_min_alpha:
+                final float minAlpha = progress / 100f;
+                scaleLayoutManager.setMinAlpha(minAlpha);
+                minAlphaValue.setText(Util.formatFloat(minAlpha));
+                break;
+        }
+    }
+
+    @Override
+    public void onStartTrackingTouch(SeekBar seekBar) {
+
+    }
+
+    @Override
+    public void onStopTrackingTouch(SeekBar seekBar) {
+
+    }
+
+    @Override
+    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
+        switch (buttonView.getId()) {
+            case R.id.s_infinite:
+                recyclerView.scrollToPosition(0);
+                scaleLayoutManager.setInfinite(isChecked);
+                break;
+            case R.id.s_change_orientation:
+                scaleLayoutManager.scrollToPosition(0);
+                scaleLayoutManager.setOrientation(isChecked ?
+                        RecyclerView.VERTICAL : RecyclerView.HORIZONTAL);
+                break;
+            case R.id.s_auto_center:
+                if (isChecked) {
+                    centerSnapHelper.attachToRecyclerView(recyclerView);
+                } else {
+                    centerSnapHelper.attachToRecyclerView(null);
+                }
+                break;
+            case R.id.s_reverse:
+                scaleLayoutManager.scrollToPosition(0);
+                scaleLayoutManager.setReverseLayout(isChecked);
+                break;
+        }
+    }
+}

app/src/main/res/drawable/ic_settings_white_48px.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportHeight="24"
+    android:viewportWidth="24"
+    tools:ignore="InvalidVectorPath">
+
+    <path android:pathData="M0 0h24v24H0z" />
+    <path
+        android:fillColor="#ffffff"
+        android:pathData="M19.43 12.98c.04-.32 .07 -.64 .07 -.98s-.03-.66-.07-.98l2.11-1.65c.19-.15 .24
+-.42 .12 -.64l-2-3.46c-.12-.22-.39-.3-.61-.22l-2.49
+1c-.52-.4-1.08-.73-1.69-.98l-.38-2.65C14.46 2.18 14.25 2 14 2h-4c-.25 0-.46 .18
+-.49 .42 l-.38 2.65c-.61 .25 -1.17 .59 -1.69 .98 l-2.49-1c-.23-.09-.49 0-.61 .22
+l-2 3.46c-.13 .22 -.07 .49 .12 .64 l2.11 1.65c-.04 .32 -.07 .65 -.07 .98 s.03
+.66 .07 .98 l-2.11 1.65c-.19 .15 -.24 .42 -.12 .64 l2 3.46c.12 .22 .39 .3 .61
+.22 l2.49-1c.52 .4 1.08 .73 1.69 .98 l.38 2.65c.03 .24 .24 .42 .49 .42 h4c.25 0
+.46-.18 .49 -.42l.38-2.65c.61-.25 1.17-.59 1.69-.98l2.49 1c.23 .09 .49 0
+.61-.22l2-3.46c.12-.22 .07 -.49-.12-.64l-2.11-1.65zM12 15.5c-1.93
+0-3.5-1.57-3.5-3.5s1.57-3.5 3.5-3.5 3.5 1.57 3.5 3.5-1.57 3.5-3.5 3.5z" />
+</vector>

app/src/main/res/layout/activity_base.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<merge xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context="com.common.commonlibtest.viewpagerlayoutmanager.VariousRvDemoActivity">
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/recycler"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:scrollbars="horizontal" />
+
+</merge>

app/src/main/res/layout/activity_main.xml

@@ -1,21 +1,20 @@
 <?xml version="1.0" encoding="utf-8"?>
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
-    xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 
     <com.common.commonlib.view.CommonTitleView
-        app:title="111"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        app:bgColor="@color/white"
         app:drawableLeft="@drawable/ic_right"
         app:drawableRight="@drawable/ic_right"
-        app:show_style="left_middle_right"
-        app:bgColor="@color/white"
         app:layout_constraintLeft_toLeftOf="parent"
-        app:layout_constraintTop_toTopOf="parent"
         app:layout_constraintRight_toRightOf="parent"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"/>
+        app:layout_constraintTop_toTopOf="parent"
+        app:show_style="left_middle_right"
+        app:title="111" />
 
     <ImageView
         android:id="@+id/iv"
@@ -83,4 +82,15 @@
         app:layout_constraintTop_toTopOf="parent"
         app:layout_constraintVertical_bias="0.770" />
 
+    <Button
+        android:id="@+id/rv"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="various rv"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.83" />
+
 </androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/dialog_carousel_setting.xml

@@ -0,0 +1,154 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="#66000000"
+    android:orientation="vertical"
+    android:paddingLeft="10dp"
+    android:paddingTop="20dp"
+    android:paddingRight="10dp"
+    android:paddingBottom="20dp">
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/item_space"
+            android:textColor="#fff" />
+
+        <TextView
+            android:id="@+id/item_space"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end"
+            android:textColor="#fff" />
+    </FrameLayout>
+
+    <SeekBar
+        android:id="@+id/sb_item_space"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" />
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/min_scale"
+            android:textColor="#fff" />
+
+        <TextView
+            android:id="@+id/min_scale_value"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end"
+            android:textColor="#fff" />
+    </FrameLayout>
+
+    <SeekBar
+        android:id="@+id/sb_min_scale"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" />
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/move_speed"
+            android:textColor="#fff" />
+
+        <TextView
+            android:id="@+id/speed_value"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end"
+            android:textColor="#fff" />
+    </FrameLayout>
+
+    <SeekBar
+        android:id="@+id/sb_speed"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" />
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/toggle_reverse"
+            android:textColor="#fff" />
+
+        <androidx.appcompat.widget.SwitchCompat
+            android:id="@+id/s_reverse"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end" />
+    </FrameLayout>
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/toggle_infinite"
+            android:textColor="#fff" />
+
+        <androidx.appcompat.widget.SwitchCompat
+            android:id="@+id/s_infinite"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end" />
+    </FrameLayout>
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/change_orientation"
+            android:textColor="#fff" />
+
+        <androidx.appcompat.widget.SwitchCompat
+            android:id="@+id/s_change_orientation"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end" />
+    </FrameLayout>
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/toggle_auto_center"
+            android:textColor="#fff" />
+
+        <androidx.appcompat.widget.SwitchCompat
+            android:id="@+id/s_auto_center"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end" />
+    </FrameLayout>
+</LinearLayout>

app/src/main/res/layout/dialog_circle_scale_setting.xml

@@ -0,0 +1,270 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="#66000000"
+    android:orientation="vertical"
+    android:paddingLeft="10dp"
+    android:paddingTop="20dp"
+    android:paddingRight="10dp"
+    android:paddingBottom="20dp">
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/radius"
+            android:textColor="#fff" />
+
+        <TextView
+            android:id="@+id/radius_value"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end"
+            android:textColor="#fff" />
+    </FrameLayout>
+
+    <SeekBar
+        android:id="@+id/sb_radius"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" />
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/angle_interval"
+            android:textColor="#fff" />
+
+        <TextView
+            android:id="@+id/interval_value"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end"
+            android:textColor="#fff" />
+    </FrameLayout>
+
+    <SeekBar
+        android:id="@+id/sb_interval"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" />
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/center_scale"
+            android:textColor="#fff" />
+
+        <TextView
+            android:id="@+id/center_scale_value"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end"
+            android:textColor="#fff" />
+    </FrameLayout>
+
+    <SeekBar
+        android:id="@+id/sb_center_scale"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" />
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/move_speed"
+            android:textColor="#fff" />
+
+        <TextView
+            android:id="@+id/speed_value"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end"
+            android:textColor="#fff" />
+    </FrameLayout>
+
+    <SeekBar
+        android:id="@+id/sb_speed"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" />
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/toggle_reverse"
+            android:textColor="#fff" />
+
+        <androidx.appcompat.widget.SwitchCompat
+            android:id="@+id/s_reverse"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end" />
+    </FrameLayout>
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/toggle_infinite"
+            android:textColor="#fff" />
+
+        <androidx.appcompat.widget.SwitchCompat
+            android:id="@+id/s_infinite"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end" />
+    </FrameLayout>
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/toggle_auto_center"
+            android:textColor="#fff" />
+
+        <androidx.appcompat.widget.SwitchCompat
+            android:id="@+id/s_auto_center"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end" />
+    </FrameLayout>
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/flip_rotate"
+            android:textColor="#fff" />
+
+        <androidx.appcompat.widget.SwitchCompat
+            android:id="@+id/s_flip"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end" />
+    </FrameLayout>
+
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp"
+        android:text="@string/gravity"
+        android:textColor="#fff" />
+
+    <RadioGroup
+        android:id="@+id/rg_gravity"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal">
+
+        <androidx.appcompat.widget.AppCompatRadioButton
+            android:id="@+id/rb_left"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="@string/left"
+            android:textColor="#fff"
+            app:buttonTint="@color/colorAccent" />
+
+        <androidx.appcompat.widget.AppCompatRadioButton
+            android:id="@+id/rb_right"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="@string/right"
+            android:textColor="#fff"
+            app:buttonTint="@color/colorAccent" />
+
+        <androidx.appcompat.widget.AppCompatRadioButton
+            android:id="@+id/rb_top"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="@string/top"
+            android:textColor="#fff"
+            app:buttonTint="@color/colorAccent" />
+
+        <androidx.appcompat.widget.AppCompatRadioButton
+            android:id="@+id/rb_bottom"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="@string/bottom"
+            android:textColor="#fff"
+            app:buttonTint="@color/colorAccent" />
+    </RadioGroup>
+
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp"
+        android:text="@string/z_alignment"
+        android:textColor="#fff" />
+
+    <RadioGroup
+        android:id="@+id/rg_z_alignment"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal">
+
+        <androidx.appcompat.widget.AppCompatRadioButton
+            android:id="@+id/rb_left_on_top"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="@string/left_on_top"
+            android:textColor="#fff"
+            app:buttonTint="@color/colorAccent" />
+
+        <androidx.appcompat.widget.AppCompatRadioButton
+            android:id="@+id/rb_right_on_top"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="@string/right_on_top"
+            android:textColor="#fff"
+            app:buttonTint="@color/colorAccent" />
+
+        <androidx.appcompat.widget.AppCompatRadioButton
+            android:id="@+id/rb_center_on_top"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="@string/center_on_top"
+            android:textColor="#fff"
+            app:buttonTint="@color/colorAccent" />
+    </RadioGroup>
+</LinearLayout>

app/src/main/res/layout/dialog_circle_setting.xml

@@ -0,0 +1,270 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="#66000000"
+    android:orientation="vertical"
+    android:paddingLeft="10dp"
+    android:paddingTop="20dp"
+    android:paddingRight="10dp"
+    android:paddingBottom="20dp">
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/radius"
+            android:textColor="#fff" />
+
+        <TextView
+            android:id="@+id/radius_value"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end"
+            android:textColor="#fff" />
+    </FrameLayout>
+
+    <SeekBar
+        android:id="@+id/sb_radius"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" />
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/angle_interval"
+            android:textColor="#fff" />
+
+        <TextView
+            android:id="@+id/interval_value"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end"
+            android:textColor="#fff" />
+    </FrameLayout>
+
+    <SeekBar
+        android:id="@+id/sb_interval"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" />
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/move_speed"
+            android:textColor="#fff" />
+
+        <TextView
+            android:id="@+id/speed_value"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end"
+            android:textColor="#fff" />
+    </FrameLayout>
+
+    <SeekBar
+        android:id="@+id/sb_speed"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" />
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/distance_to_bottom"
+            android:textColor="#fff" />
+
+        <TextView
+            android:id="@+id/distance_to_bottom_value"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end"
+            android:textColor="#fff" />
+    </FrameLayout>
+
+    <SeekBar
+        android:id="@+id/sb_distance_to_bottom"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" />
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/toggle_reverse"
+            android:textColor="#fff" />
+
+        <androidx.appcompat.widget.SwitchCompat
+            android:id="@+id/s_reverse"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end" />
+    </FrameLayout>
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/toggle_infinite"
+            android:textColor="#fff" />
+
+        <androidx.appcompat.widget.SwitchCompat
+            android:id="@+id/s_infinite"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end" />
+    </FrameLayout>
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/toggle_auto_center"
+            android:textColor="#fff" />
+
+        <androidx.appcompat.widget.SwitchCompat
+            android:id="@+id/s_auto_center"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end" />
+    </FrameLayout>
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/flip_rotate"
+            android:textColor="#fff" />
+
+        <androidx.appcompat.widget.SwitchCompat
+            android:id="@+id/s_flip"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end" />
+    </FrameLayout>
+
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp"
+        android:text="@string/gravity"
+        android:textColor="#fff" />
+
+    <RadioGroup
+        android:id="@+id/rg_gravity"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal">
+
+        <androidx.appcompat.widget.AppCompatRadioButton
+            android:id="@+id/rb_left"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="@string/left"
+            android:textColor="#fff"
+            app:buttonTint="@color/colorAccent" />
+
+        <androidx.appcompat.widget.AppCompatRadioButton
+            android:id="@+id/rb_right"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="@string/right"
+            android:textColor="#fff"
+            app:buttonTint="@color/colorAccent" />
+
+        <androidx.appcompat.widget.AppCompatRadioButton
+            android:id="@+id/rb_top"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="@string/top"
+            android:textColor="#fff"
+            app:buttonTint="@color/colorAccent" />
+
+        <androidx.appcompat.widget.AppCompatRadioButton
+            android:id="@+id/rb_bottom"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="@string/bottom"
+            android:textColor="#fff"
+            app:buttonTint="@color/colorAccent" />
+    </RadioGroup>
+
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp"
+        android:text="@string/z_alignment"
+        android:textColor="#fff" />
+
+    <RadioGroup
+        android:id="@+id/rg_z_alignment"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal">
+
+        <androidx.appcompat.widget.AppCompatRadioButton
+            android:id="@+id/rb_left_on_top"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="@string/left_on_top"
+            android:textColor="#fff"
+            app:buttonTint="@color/colorAccent" />
+
+        <androidx.appcompat.widget.AppCompatRadioButton
+            android:id="@+id/rb_right_on_top"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="@string/right_on_top"
+            android:textColor="#fff"
+            app:buttonTint="@color/colorAccent" />
+
+        <androidx.appcompat.widget.AppCompatRadioButton
+            android:id="@+id/rb_center_on_top"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="@string/center_on_top"
+            android:textColor="#fff"
+            app:buttonTint="@color/colorAccent" />
+    </RadioGroup>
+</LinearLayout>

app/src/main/res/layout/dialog_gallery_setting.xml

@@ -0,0 +1,261 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:background="#66000000"
+        android:orientation="vertical"
+        android:paddingLeft="10dp"
+        android:paddingTop="20dp"
+        android:paddingRight="10dp"
+        android:paddingBottom="20dp">
+
+        <FrameLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content">
+
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/item_space"
+                android:textColor="#fff" />
+
+            <TextView
+                android:id="@+id/item_space"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="end"
+                android:textColor="#fff" />
+        </FrameLayout>
+
+        <SeekBar
+            android:id="@+id/sb_item_space"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content" />
+
+        <FrameLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="20dp">
+
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/angle_interval"
+                android:textColor="#fff" />
+
+            <TextView
+                android:id="@+id/angle_value"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="end"
+                android:textColor="#fff" />
+        </FrameLayout>
+
+        <SeekBar
+            android:id="@+id/sb_interval"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content" />
+
+        <FrameLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="20dp">
+
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/max_alpha"
+                android:textColor="#fff" />
+
+            <TextView
+                android:id="@+id/max_alpha_value"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="end"
+                android:textColor="#fff" />
+        </FrameLayout>
+
+        <SeekBar
+            android:id="@+id/sb_max_alpha"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content" />
+
+        <FrameLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="20dp">
+
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/min_alpha"
+                android:textColor="#fff" />
+
+            <TextView
+                android:id="@+id/min_alpha_value"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="end"
+                android:textColor="#fff" />
+        </FrameLayout>
+
+        <SeekBar
+            android:id="@+id/sb_min_alpha"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content" />
+
+        <FrameLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="20dp">
+
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/move_speed"
+                android:textColor="#fff" />
+
+            <TextView
+                android:id="@+id/speed_value"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="end"
+                android:textColor="#fff" />
+        </FrameLayout>
+
+        <SeekBar
+            android:id="@+id/sb_speed"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content" />
+
+        <FrameLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="20dp">
+
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/toggle_reverse"
+                android:textColor="#fff" />
+
+            <androidx.appcompat.widget.SwitchCompat
+                android:id="@+id/s_reverse"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="end" />
+        </FrameLayout>
+
+        <FrameLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="20dp">
+
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/toggle_infinite"
+                android:textColor="#fff" />
+
+            <androidx.appcompat.widget.SwitchCompat
+                android:id="@+id/s_infinite"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="end" />
+        </FrameLayout>
+
+        <FrameLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="20dp">
+
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/change_orientation"
+                android:textColor="#fff" />
+
+            <androidx.appcompat.widget.SwitchCompat
+                android:id="@+id/s_change_orientation"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="end" />
+        </FrameLayout>
+
+        <FrameLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="20dp">
+
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/toggle_auto_center"
+                android:textColor="#fff" />
+
+            <androidx.appcompat.widget.SwitchCompat
+                android:id="@+id/s_auto_center"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="end" />
+        </FrameLayout>
+
+        <FrameLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="20dp">
+
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/toggle_bring_center_in_front"
+                android:textColor="#fff" />
+
+            <androidx.appcompat.widget.SwitchCompat
+                android:id="@+id/s_center_in_front"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="end" />
+        </FrameLayout>
+
+        <FrameLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="20dp">
+
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/flip_rotate"
+                android:textColor="#fff" />
+
+            <androidx.appcompat.widget.SwitchCompat
+                android:id="@+id/s_flip"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="end" />
+        </FrameLayout>
+
+        <FrameLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="20dp">
+
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/rotate_from_edge"
+                android:textColor="#fff" />
+
+            <androidx.appcompat.widget.SwitchCompat
+                android:id="@+id/s_rotate_from_edge"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="end" />
+        </FrameLayout>
+    </LinearLayout>
+</ScrollView>

app/src/main/res/layout/dialog_rotate_setting.xml

@@ -0,0 +1,174 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="#66000000"
+    android:orientation="vertical"
+    android:paddingLeft="10dp"
+    android:paddingTop="20dp"
+    android:paddingRight="10dp"
+    android:paddingBottom="20dp">
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/item_space"
+            android:textColor="#fff" />
+
+        <TextView
+            android:id="@+id/item_space"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end"
+            android:textColor="#fff" />
+    </FrameLayout>
+
+    <SeekBar
+        android:id="@+id/sb_item_space"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" />
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/rotate_angle"
+            android:textColor="#fff" />
+
+        <TextView
+            android:id="@+id/angle_value"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end"
+            android:textColor="#fff" />
+    </FrameLayout>
+
+    <SeekBar
+        android:id="@+id/sb_angle"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" />
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/move_speed"
+            android:textColor="#fff" />
+
+        <TextView
+            android:id="@+id/speed_value"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end"
+            android:textColor="#fff" />
+    </FrameLayout>
+
+    <SeekBar
+        android:id="@+id/sb_speed"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" />
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/toggle_reverse"
+            android:textColor="#fff" />
+
+        <androidx.appcompat.widget.SwitchCompat
+            android:id="@+id/s_reverse"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end" />
+    </FrameLayout>
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/toggle_infinite"
+            android:textColor="#fff" />
+
+        <androidx.appcompat.widget.SwitchCompat
+            android:id="@+id/s_infinite"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end" />
+    </FrameLayout>
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/change_orientation"
+            android:textColor="#fff" />
+
+        <androidx.appcompat.widget.SwitchCompat
+            android:id="@+id/s_change_orientation"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end" />
+    </FrameLayout>
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/toggle_reverse_rotate"
+            android:textColor="#fff" />
+
+        <androidx.appcompat.widget.SwitchCompat
+
+            android:id="@+id/s_reverse_rotate"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end" />
+    </FrameLayout>
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/toggle_auto_center"
+            android:textColor="#fff" />
+
+        <androidx.appcompat.widget.SwitchCompat
+
+            android:id="@+id/s_auto_center"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end" />
+    </FrameLayout>
+</LinearLayout>

app/src/main/res/layout/dialog_scale_setting.xml

@@ -0,0 +1,202 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="#66000000"
+    android:orientation="vertical"
+    android:paddingBottom="20dp"
+    android:paddingLeft="10dp"
+    android:paddingRight="10dp"
+    android:paddingTop="20dp">
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/item_space"
+            android:textColor="#fff" />
+
+        <TextView
+            android:id="@+id/item_space"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end"
+            android:textColor="#fff" />
+    </FrameLayout>
+
+    <SeekBar
+        android:id="@+id/sb_item_space"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" />
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/min_scale"
+            android:textColor="#fff" />
+
+        <TextView
+            android:id="@+id/min_scale_value"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end"
+            android:textColor="#fff" />
+    </FrameLayout>
+
+    <SeekBar
+        android:id="@+id/sb_min_scale"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" />
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/move_speed"
+            android:textColor="#fff" />
+
+        <TextView
+            android:id="@+id/speed_value"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end"
+            android:textColor="#fff" />
+    </FrameLayout>
+
+    <SeekBar
+        android:id="@+id/sb_speed"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" />
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/max_alpha"
+            android:textColor="#fff" />
+
+        <TextView
+            android:id="@+id/max_alpha_value"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end"
+            android:textColor="#fff" />
+    </FrameLayout>
+
+    <SeekBar
+        android:id="@+id/sb_max_alpha"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" />
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/min_alpha"
+            android:textColor="#fff" />
+
+        <TextView
+            android:id="@+id/min_alpha_value"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end"
+            android:textColor="#fff" />
+    </FrameLayout>
+
+    <SeekBar
+        android:id="@+id/sb_min_alpha"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" />
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/toggle_reverse"
+            android:textColor="#fff" />
+
+        <androidx.appcompat.widget.SwitchCompat
+            android:id="@+id/s_reverse"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end" />
+    </FrameLayout>
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/toggle_infinite"
+            android:textColor="#fff" />
+
+        <androidx.appcompat.widget.SwitchCompat
+            android:id="@+id/s_infinite"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end" />
+    </FrameLayout>
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/change_orientation"
+            android:textColor="#fff" />
+
+        <androidx.appcompat.widget.SwitchCompat
+            android:id="@+id/s_change_orientation"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end" />
+    </FrameLayout>
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/toggle_auto_center"
+            android:textColor="#fff" />
+
+        <androidx.appcompat.widget.SwitchCompat
+            android:id="@+id/s_auto_center"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end" />
+    </FrameLayout>
+</LinearLayout>

app/src/main/res/layout/item_image.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="200dp"
+    android:layout_height="300dp"
+    app:cardCornerRadius="5dp">
+
+    <ImageView
+        android:id="@+id/image"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:scaleType="centerCrop" />
+</androidx.cardview.widget.CardView>

app/src/main/res/layout/variois_rv_layout.xml

@@ -0,0 +1,59 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:paddingLeft="16dp"
+    android:paddingRight="16dp"
+    tools:context="com.common.commonlibtest.viewpagerlayoutmanager.VariousRvDemoActivity">
+
+    <androidx.appcompat.widget.AppCompatButton
+        android:id="@+id/bt_circle"
+        android:layout_width="match_parent"
+        android:layout_height="48dp"
+        android:layout_marginTop="8dp"
+        android:text="@string/circle_layout_manger"
+        app:textAllCaps="false" />
+
+    <androidx.appcompat.widget.AppCompatButton
+        android:id="@+id/bt_scale"
+        android:layout_width="match_parent"
+        android:layout_height="48dp"
+        android:layout_marginTop="8dp"
+        android:text="@string/scale_layout_manager"
+        app:textAllCaps="false" />
+
+    <androidx.appcompat.widget.AppCompatButton
+        android:id="@+id/bt_circle_scale"
+        android:layout_width="match_parent"
+        android:layout_height="48dp"
+        android:layout_marginTop="8dp"
+        android:text="@string/circle_scale_layout_manager"
+        app:textAllCaps="false" />
+
+    <androidx.appcompat.widget.AppCompatButton
+        android:id="@+id/bt_elevate_scale"
+        android:layout_width="match_parent"
+        android:layout_height="48dp"
+        android:layout_marginTop="8dp"
+        android:text="@string/carousel_layout_manager"
+        app:textAllCaps="false" />
+
+    <androidx.appcompat.widget.AppCompatButton
+        android:id="@+id/bt_gallery"
+        android:layout_width="match_parent"
+        android:layout_height="48dp"
+        android:layout_marginTop="8dp"
+        android:text="@string/gallery_layout_manager"
+        app:textAllCaps="false" />
+
+    <androidx.appcompat.widget.AppCompatButton
+        android:id="@+id/bt_rotate"
+        android:layout_width="match_parent"
+        android:layout_height="48dp"
+        android:layout_marginTop="8dp"
+        android:text="@string/rotate_layout_manager"
+        app:textAllCaps="false" />
+</LinearLayout>

app/src/main/res/menu/settings.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item android:id="@+id/setting"
+        android:title="@string/setting"
+        app:showAsAction="always"/>
+</menu>

app/src/main/res/values/colors.xml

@@ -7,4 +7,5 @@
     <color name="teal_700">#FF018786</color>
     <color name="black">#FF000000</color>
     <color name="white">#FFFFFFFF</color>
+    <color name="colorAccent">#FF4081</color>
 </resources>

app/src/main/res/values/strings.xml

@@ -1,3 +1,39 @@
 <resources>
     <string name="app_name">CommonLibTest</string>
+
+    <string name="setting">Setting</string>
+    <string name="circle_layout_manger">Circle LayoutManager</string>
+    <string name="circle_scale_layout_manager">Circle Scale LayoutManager</string>
+    <string name="carousel_layout_manager">Carousel LayoutManager</string>
+    <string name="gallery_layout_manager">Gallery LayoutManager</string>
+    <string name="rotate_layout_manager">Rotate LayoutManager</string>
+    <string name="scale_layout_manager">Scale LayoutManager</string>
+
+    <string name="radius">Radius</string>
+    <string name="item_space">Item Space</string>
+    <string name="move_speed">Move Speed</string>
+    <string name="distance_to_bottom">Distance To Bottom</string>
+    <string name="angle_interval">Interval Angle</string>
+    <string name="center_scale">Center Scale</string>
+    <string name="rotate_angle">Rotate Angle</string>
+    <string name="min_scale">Min Scale</string>
+    <string name="max_alpha">Max Alpha</string>
+    <string name="min_alpha">Min Alpha</string>
+    <string name="toggle_infinite">Toggle Infinite</string>
+    <string name="toggle_bring_center_in_front">Toggle Bring Center In Front</string>
+    <string name="toggle_reverse_rotate">Toggle Reverse Rotate</string>
+    <string name="toggle_auto_center">Toggle Auto Center</string>
+    <string name="toggle_reverse">Toggle Reverse</string>
+    <string name="flip_rotate">Flip Rotate</string>
+    <string name="rotate_from_edge">Rotate From Edge</string>
+    <string name="change_orientation">Change Orientation</string>
+    <string name="gravity">Gravity</string>
+    <string name="left">Left</string>
+    <string name="right">Right</string>
+    <string name="top">Top</string>
+    <string name="bottom">Bottom</string>
+    <string name="z_alignment">Z-Alignment</string>
+    <string name="left_on_top">Left On Top</string>
+    <string name="right_on_top">Right On Top</string>
+    <string name="center_on_top">Center On Top</string>
 </resources>

commonLib/src/main/java/com/common/commonlib/view/viewpagerlayoutmanager/AutoPlayRecyclerView.java

@@ -0,0 +1,63 @@
+package com.common.commonlib.view.viewpagerlayoutmanager;
+
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.util.AttributeSet;
+import android.view.MotionEvent;
+
+import androidx.annotation.Nullable;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.common.commonlib.R;
+
+public class AutoPlayRecyclerView extends RecyclerView {
+    private AutoPlaySnapHelper autoPlaySnapHelper;
+
+    public AutoPlayRecyclerView(Context context) {
+        this(context, null);
+    }
+
+    public AutoPlayRecyclerView(Context context, @Nullable AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public AutoPlayRecyclerView(Context context, @Nullable AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+        TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.AutoPlayRecyclerView);
+        final int timeInterval = typedArray.getInt(R.styleable.AutoPlayRecyclerView_timeInterval, AutoPlaySnapHelper.TIME_INTERVAL);
+        final int direction = typedArray.getInt(R.styleable.AutoPlayRecyclerView_direction, AutoPlaySnapHelper.RIGHT);
+        typedArray.recycle();
+        autoPlaySnapHelper = new AutoPlaySnapHelper(timeInterval, direction);
+    }
+
+    @Override
+    public boolean dispatchTouchEvent(MotionEvent ev) {
+        boolean result = super.dispatchTouchEvent(ev);
+        switch (ev.getAction()) {
+            case MotionEvent.ACTION_DOWN:
+                if (autoPlaySnapHelper != null) {
+                    autoPlaySnapHelper.pause();
+                }
+                break;
+            case MotionEvent.ACTION_UP:
+                if (autoPlaySnapHelper != null) {
+                    autoPlaySnapHelper.start();
+                }
+        }
+        return result;
+    }
+
+    public void start() {
+        autoPlaySnapHelper.start();
+    }
+
+    public void pause() {
+        autoPlaySnapHelper.pause();
+    }
+
+    @Override
+    public void setLayoutManager(LayoutManager layout) {
+        super.setLayoutManager(layout);
+        autoPlaySnapHelper.attachToRecyclerView(this);
+    }
+}

commonLib/src/main/java/com/common/commonlib/view/viewpagerlayoutmanager/AutoPlaySnapHelper.java

@@ -0,0 +1,116 @@
+package com.common.commonlib.view.viewpagerlayoutmanager;
+
+import android.os.Handler;
+import android.os.Looper;
+import android.view.animation.DecelerateInterpolator;
+import android.widget.Scroller;
+
+import androidx.annotation.Nullable;
+import androidx.recyclerview.widget.RecyclerView;
+
+
+/**
+ * Used by {@link AutoPlayRecyclerView} to implement auto play effect
+ */
+
+class AutoPlaySnapHelper extends CenterSnapHelper {
+    final static int TIME_INTERVAL = 2000;
+
+    final static int LEFT = 1;
+    final static int RIGHT = 2;
+
+    private Handler handler;
+    private int timeInterval;
+    private Runnable autoPlayRunnable;
+    private boolean runnableAdded;
+    private int direction;
+
+    AutoPlaySnapHelper(int timeInterval, int direction) {
+        checkTimeInterval(timeInterval);
+        checkDirection(direction);
+        handler = new Handler(Looper.getMainLooper());
+        this.timeInterval = timeInterval;
+        this.direction = direction;
+    }
+
+    @Override
+    public void attachToRecyclerView(@Nullable RecyclerView recyclerView) throws IllegalStateException {
+        if (mRecyclerView == recyclerView) {
+            return; // nothing to do
+        }
+        if (mRecyclerView != null) {
+            destroyCallbacks();
+        }
+        mRecyclerView = recyclerView;
+        if (mRecyclerView != null) {
+            final RecyclerView.LayoutManager layoutManager = mRecyclerView.getLayoutManager();
+            if (!(layoutManager instanceof ViewPagerLayoutManager)) return;
+
+            setupCallbacks();
+            mGravityScroller = new Scroller(mRecyclerView.getContext(),
+                    new DecelerateInterpolator());
+
+            snapToCenterView((ViewPagerLayoutManager) layoutManager,
+                    ((ViewPagerLayoutManager) layoutManager).onPageChangeListener);
+
+            ((ViewPagerLayoutManager) layoutManager).setInfinite(true);
+
+            autoPlayRunnable = new Runnable() {
+                @Override
+                public void run() {
+                    final int currentPosition =
+                            ((ViewPagerLayoutManager) layoutManager).getCurrentPositionOffset() *
+                                    (((ViewPagerLayoutManager) layoutManager).getReverseLayout() ? -1 : 1);
+                    ScrollHelper.smoothScrollToPosition(mRecyclerView,
+                            (ViewPagerLayoutManager) layoutManager, direction == RIGHT ? currentPosition + 1 : currentPosition - 1);
+                    handler.postDelayed(autoPlayRunnable, timeInterval);
+                }
+            };
+            handler.postDelayed(autoPlayRunnable, timeInterval);
+            runnableAdded = true;
+        }
+    }
+
+    @Override
+    void destroyCallbacks() {
+        super.destroyCallbacks();
+        if (runnableAdded) {
+            handler.removeCallbacks(autoPlayRunnable);
+            runnableAdded = false;
+        }
+    }
+
+    void pause() {
+        if (runnableAdded) {
+            handler.removeCallbacks(autoPlayRunnable);
+            runnableAdded = false;
+        }
+    }
+
+    void start() {
+        if (!runnableAdded) {
+            handler.postDelayed(autoPlayRunnable, timeInterval);
+            runnableAdded = true;
+        }
+    }
+
+    void setTimeInterval(int timeInterval) {
+        checkTimeInterval(timeInterval);
+        this.timeInterval = timeInterval;
+    }
+
+    void setDirection(int direction) {
+        checkDirection(direction);
+        this.direction = direction;
+    }
+
+    private void checkDirection(int direction) {
+        if (direction != LEFT && direction != RIGHT)
+            throw new IllegalArgumentException("direction should be one of left or right");
+    }
+
+    private void checkTimeInterval(int timeInterval) {
+        if (timeInterval <= 0)
+            throw new IllegalArgumentException("time interval should greater than 0");
+    }
+}

commonLib/src/main/java/com/common/commonlib/view/viewpagerlayoutmanager/CarouselLayoutManager.java

@@ -0,0 +1,167 @@
+package com.common.commonlib.view.viewpagerlayoutmanager;
+
+import android.content.Context;
+import android.view.View;
+
+/**
+ * An implementation of {@link ViewPagerLayoutManager}
+ * which layouts items like carousel
+ */
+
+@SuppressWarnings({"WeakerAccess", "unused"})
+public class CarouselLayoutManager extends ViewPagerLayoutManager {
+
+    private int itemSpace;
+    private float minScale;
+    private float moveSpeed;
+
+    public CarouselLayoutManager(Context context, int itemSpace) {
+        this(new Builder(context, itemSpace));
+    }
+
+    public CarouselLayoutManager(Context context, int itemSpace, int orientation) {
+        this(new Builder(context, itemSpace).setOrientation(orientation));
+    }
+
+    public CarouselLayoutManager(Context context, int itemSpace, int orientation, boolean reverseLayout) {
+        this(new Builder(context, itemSpace).setOrientation(orientation).setReverseLayout(reverseLayout));
+    }
+
+    public CarouselLayoutManager(Builder builder) {
+        this(builder.context, builder.itemSpace, builder.minScale, builder.orientation,
+                builder.maxVisibleItemCount, builder.moveSpeed, builder.distanceToBottom,
+                builder.reverseLayout);
+    }
+
+    private CarouselLayoutManager(Context context, int itemSpace, float minScale, int orientation,
+                                  int maxVisibleItemCount, float moveSpeed, int distanceToBottom,
+                                  boolean reverseLayout) {
+        super(context, orientation, reverseLayout);
+        setEnableBringCenterToFront(true);
+        setDistanceToBottom(distanceToBottom);
+        setMaxVisibleItemCount(maxVisibleItemCount);
+        this.itemSpace = itemSpace;
+        this.minScale = minScale;
+        this.moveSpeed = moveSpeed;
+    }
+
+    public int getItemSpace() {
+        return itemSpace;
+    }
+
+    public float getMinScale() {
+        return minScale;
+    }
+
+    public float getMoveSpeed() {
+        return moveSpeed;
+    }
+
+    public void setItemSpace(int itemSpace) {
+        assertNotInLayoutOrScroll(null);
+        if (this.itemSpace == itemSpace) return;
+        this.itemSpace = itemSpace;
+        removeAllViews();
+    }
+
+    public void setMinScale(float minScale) {
+        assertNotInLayoutOrScroll(null);
+        if (minScale > 1f) minScale = 1f;
+        if (this.minScale == minScale) return;
+        this.minScale = minScale;
+        requestLayout();
+    }
+
+    public void setMoveSpeed(float moveSpeed) {
+        assertNotInLayoutOrScroll(null);
+        if (this.moveSpeed == moveSpeed) return;
+        this.moveSpeed = moveSpeed;
+    }
+
+    @Override
+    protected float setInterval() {
+        return (mDecoratedMeasurement - itemSpace);
+    }
+
+    @Override
+    protected void setItemViewProperty(View itemView, float targetOffset) {
+        float scale = calculateScale(targetOffset + mSpaceMain);
+        itemView.setScaleX(scale);
+        itemView.setScaleY(scale);
+    }
+
+    @Override
+    protected float getDistanceRatio() {
+        if (moveSpeed == 0) return Float.MAX_VALUE;
+        return 1 / moveSpeed;
+    }
+
+    @Override
+    protected float setViewElevation(View itemView, float targetOffset) {
+        return itemView.getScaleX() * 5;
+    }
+
+    private float calculateScale(float x) {
+        float deltaX = Math.abs(x - (mOrientationHelper.getTotalSpace() - mDecoratedMeasurement) / 2f);
+        return (minScale - 1) * deltaX / (mOrientationHelper.getTotalSpace() / 2f) + 1f;
+    }
+
+    public static class Builder {
+        private static final float DEFAULT_SPEED = 1f;
+        private static final float MIN_SCALE = 0.5f;
+
+        private Context context;
+        private int itemSpace;
+        private int orientation;
+        private float minScale;
+        private float moveSpeed;
+        private int maxVisibleItemCount;
+        private boolean reverseLayout;
+        private int distanceToBottom;
+
+        public Builder(Context context, int itemSpace) {
+            this.itemSpace = itemSpace;
+            this.context = context;
+            orientation = HORIZONTAL;
+            minScale = MIN_SCALE;
+            this.moveSpeed = DEFAULT_SPEED;
+            reverseLayout = false;
+            maxVisibleItemCount = ViewPagerLayoutManager.DETERMINE_BY_MAX_AND_MIN;
+            distanceToBottom = ViewPagerLayoutManager.INVALID_SIZE;
+        }
+
+        public Builder setOrientation(int orientation) {
+            this.orientation = orientation;
+            return this;
+        }
+
+        public Builder setMinScale(float minScale) {
+            this.minScale = minScale;
+            return this;
+        }
+
+        public Builder setReverseLayout(boolean reverseLayout) {
+            this.reverseLayout = reverseLayout;
+            return this;
+        }
+
+        public Builder setMoveSpeed(float moveSpeed) {
+            this.moveSpeed = moveSpeed;
+            return this;
+        }
+
+        public Builder setMaxVisibleItemCount(int maxVisibleItemCount) {
+            this.maxVisibleItemCount = maxVisibleItemCount;
+            return this;
+        }
+
+        public Builder setDistanceToBottom(int distanceToBottom) {
+            this.distanceToBottom = distanceToBottom;
+            return this;
+        }
+
+        public CarouselLayoutManager build() {
+            return new CarouselLayoutManager(this);
+        }
+    }
+}

commonLib/src/main/java/com/common/commonlib/view/viewpagerlayoutmanager/CenterSnapHelper.java

@@ -0,0 +1,158 @@
+package com.common.commonlib.view.viewpagerlayoutmanager;
+
+import android.view.animation.DecelerateInterpolator;
+import android.widget.Scroller;
+
+import androidx.annotation.Nullable;
+import androidx.recyclerview.widget.RecyclerView;
+
+public class CenterSnapHelper extends RecyclerView.OnFlingListener {
+
+    RecyclerView mRecyclerView;
+    Scroller mGravityScroller;
+
+    /**
+     * when the dataSet is extremely large
+     * {@link #snapToCenterView(ViewPagerLayoutManager, ViewPagerLayoutManager.OnPageChangeListener)}
+     * may keep calling itself because the accuracy of float
+     */
+    private boolean snapToCenter = false;
+
+    // Handles the snap on scroll case.
+    private final RecyclerView.OnScrollListener mScrollListener =
+            new RecyclerView.OnScrollListener() {
+
+                boolean mScrolled = false;
+
+                @Override
+                public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
+                    super.onScrollStateChanged(recyclerView, newState);
+
+                    final ViewPagerLayoutManager layoutManager =
+                            (ViewPagerLayoutManager) recyclerView.getLayoutManager();
+                    final ViewPagerLayoutManager.OnPageChangeListener onPageChangeListener =
+                            layoutManager.onPageChangeListener;
+                    if (onPageChangeListener != null) {
+                        onPageChangeListener.onPageScrollStateChanged(newState);
+                    }
+
+                    if (newState == RecyclerView.SCROLL_STATE_IDLE && mScrolled) {
+                        mScrolled = false;
+                        if (!snapToCenter) {
+                            snapToCenter = true;
+                            snapToCenterView(layoutManager, onPageChangeListener);
+                        } else {
+                            snapToCenter = false;
+                        }
+                    }
+                }
+
+                @Override
+                public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
+                    if (dx != 0 || dy != 0) {
+                        mScrolled = true;
+                    }
+                }
+            };
+
+    @Override
+    public boolean onFling(int velocityX, int velocityY) {
+        ViewPagerLayoutManager layoutManager = (ViewPagerLayoutManager) mRecyclerView.getLayoutManager();
+        if (layoutManager == null) {
+            return false;
+        }
+        RecyclerView.Adapter adapter = mRecyclerView.getAdapter();
+        if (adapter == null) {
+            return false;
+        }
+
+        if (!layoutManager.getInfinite() &&
+                (layoutManager.mOffset == layoutManager.getMaxOffset()
+                        || layoutManager.mOffset == layoutManager.getMinOffset())) {
+            return false;
+        }
+
+        final int minFlingVelocity = mRecyclerView.getMinFlingVelocity();
+        mGravityScroller.fling(0, 0, velocityX, velocityY,
+                Integer.MIN_VALUE, Integer.MAX_VALUE, Integer.MIN_VALUE, Integer.MAX_VALUE);
+
+        if (layoutManager.mOrientation == ViewPagerLayoutManager.VERTICAL
+                && Math.abs(velocityY) > minFlingVelocity) {
+            final int currentPosition = layoutManager.getCurrentPositionOffset();
+            final int offsetPosition = (int) (mGravityScroller.getFinalY() /
+                    layoutManager.mInterval / layoutManager.getDistanceRatio());
+            ScrollHelper.smoothScrollToPosition(mRecyclerView, layoutManager, layoutManager.getReverseLayout() ?
+                    -currentPosition - offsetPosition : currentPosition + offsetPosition);
+            return true;
+        } else if (layoutManager.mOrientation == ViewPagerLayoutManager.HORIZONTAL
+                && Math.abs(velocityX) > minFlingVelocity) {
+            final int currentPosition = layoutManager.getCurrentPositionOffset();
+            final int offsetPosition = (int) (mGravityScroller.getFinalX() /
+                    layoutManager.mInterval / layoutManager.getDistanceRatio());
+            ScrollHelper.smoothScrollToPosition(mRecyclerView, layoutManager, layoutManager.getReverseLayout() ?
+                    -currentPosition - offsetPosition : currentPosition + offsetPosition);
+            return true;
+        }
+
+        return true;
+    }
+
+    public void attachToRecyclerView(@Nullable RecyclerView recyclerView)
+            throws IllegalStateException {
+        if (mRecyclerView == recyclerView) {
+            return; // nothing to do
+        }
+        if (mRecyclerView != null) {
+            destroyCallbacks();
+        }
+        mRecyclerView = recyclerView;
+        if (mRecyclerView != null) {
+            final RecyclerView.LayoutManager layoutManager = mRecyclerView.getLayoutManager();
+            if (!(layoutManager instanceof ViewPagerLayoutManager)) return;
+
+            setupCallbacks();
+            mGravityScroller = new Scroller(mRecyclerView.getContext(),
+                    new DecelerateInterpolator());
+
+            snapToCenterView((ViewPagerLayoutManager) layoutManager,
+                    ((ViewPagerLayoutManager) layoutManager).onPageChangeListener);
+        }
+    }
+
+    void snapToCenterView(ViewPagerLayoutManager layoutManager,
+                          ViewPagerLayoutManager.OnPageChangeListener listener) {
+        final int delta = layoutManager.getOffsetToCenter();
+        if (delta != 0) {
+            if (layoutManager.getOrientation()
+                    == RecyclerView.VERTICAL)
+                mRecyclerView.smoothScrollBy(0, delta);
+            else
+                mRecyclerView.smoothScrollBy(delta, 0);
+        } else {
+            // set it false to make smoothScrollToPosition keep trigger the listener
+            snapToCenter = false;
+        }
+
+        if (listener != null)
+            listener.onPageSelected(layoutManager.getCurrentPosition());
+    }
+
+    /**
+     * Called when an instance of a {@link RecyclerView} is attached.
+     */
+    void setupCallbacks() throws IllegalStateException {
+        if (mRecyclerView.getOnFlingListener() != null) {
+            throw new IllegalStateException("An instance of OnFlingListener already set.");
+        }
+        mRecyclerView.addOnScrollListener(mScrollListener);
+        mRecyclerView.setOnFlingListener(this);
+    }
+
+    /**
+     * Called when the instance of a {@link RecyclerView} is detached.
+     */
+    void destroyCallbacks() {
+        mRecyclerView.removeOnScrollListener(mScrollListener);
+        mRecyclerView.setOnFlingListener(null);
+    }
+}

commonLib/src/main/java/com/common/commonlib/view/viewpagerlayoutmanager/CircleLayoutManager.java

@@ -0,0 +1,357 @@
+package com.common.commonlib.view.viewpagerlayoutmanager;
+
+import android.content.Context;
+import android.view.View;
+
+import androidx.recyclerview.widget.RecyclerView;
+
+/**
+ * An implementation of {@link ViewPagerLayoutManager}
+ * which layouts item in a circle
+ */
+
+@SuppressWarnings({"WeakerAccess", "unused"})
+public class CircleLayoutManager extends ViewPagerLayoutManager {
+    public static final int LEFT = 10;
+    public static final int RIGHT = 11;
+    public static final int TOP = 12;
+    public static final int BOTTOM = 13;
+
+    public static final int LEFT_ON_TOP = 4;
+    public static final int RIGHT_ON_TOP = 5;
+    public static final int CENTER_ON_TOP = 6;
+
+    private int radius;
+    private int angleInterval;
+    private float moveSpeed;
+    private float maxRemoveAngle;
+    private float minRemoveAngle;
+    private int gravity;
+    private boolean flipRotate;
+    private int zAlignment;
+
+    public CircleLayoutManager(Context context) {
+        this(new Builder(context));
+    }
+
+    public CircleLayoutManager(Context context, boolean reverseLayout) {
+        this(new Builder(context).setReverseLayout(reverseLayout));
+    }
+
+    public CircleLayoutManager(Context context, int gravity, boolean reverseLayout) {
+        this(new Builder(context).setGravity(gravity).setReverseLayout(reverseLayout));
+    }
+
+    public CircleLayoutManager(Builder builder) {
+        this(builder.context, builder.radius, builder.angleInterval, builder.moveSpeed, builder.maxRemoveAngle,
+                builder.minRemoveAngle, builder.gravity, builder.zAlignment, builder.flipRotate,
+                builder.maxVisibleItemCount, builder.distanceToBottom, builder.reverseLayout);
+    }
+
+    private CircleLayoutManager(Context context, int radius, int angleInterval, float moveSpeed,
+                                float max, float min, int gravity, int zAlignment, boolean flipRotate,
+                                int maxVisibleItemCount, int distanceToBottom, boolean reverseLayout) {
+        super(context, (gravity == LEFT || gravity == RIGHT) ? VERTICAL : HORIZONTAL, reverseLayout);
+        setEnableBringCenterToFront(true);
+        setMaxVisibleItemCount(maxVisibleItemCount);
+        setDistanceToBottom(distanceToBottom);
+        this.radius = radius;
+        this.angleInterval = angleInterval;
+        this.moveSpeed = moveSpeed;
+        this.maxRemoveAngle = max;
+        this.minRemoveAngle = min;
+        this.gravity = gravity;
+        this.flipRotate = flipRotate;
+        this.zAlignment = zAlignment;
+    }
+
+    private static void assertGravity(int gravity) {
+        if (gravity != LEFT && gravity != RIGHT && gravity != TOP && gravity != BOTTOM) {
+            throw new IllegalArgumentException("gravity must be one of LEFT RIGHT TOP and BOTTOM");
+        }
+    }
+
+    private static void assertZAlignmentState(int zAlignment) {
+        if (zAlignment != LEFT_ON_TOP && zAlignment != RIGHT_ON_TOP && zAlignment != CENTER_ON_TOP) {
+            throw new IllegalArgumentException("zAlignment must be one of LEFT_ON_TOP RIGHT_ON_TOP and CENTER_ON_TOP");
+        }
+    }
+
+    public int getRadius() {
+        return radius;
+    }
+
+    public void setRadius(int radius) {
+        assertNotInLayoutOrScroll(null);
+        if (this.radius == radius) return;
+        this.radius = radius;
+        removeAllViews();
+    }
+
+    public int getAngleInterval() {
+        return angleInterval;
+    }
+
+    public void setAngleInterval(int angleInterval) {
+        assertNotInLayoutOrScroll(null);
+        if (this.angleInterval == angleInterval) return;
+        this.angleInterval = angleInterval;
+        removeAllViews();
+    }
+
+    public float getMoveSpeed() {
+        return moveSpeed;
+    }
+
+    public void setMoveSpeed(float moveSpeed) {
+        assertNotInLayoutOrScroll(null);
+        if (this.moveSpeed == moveSpeed) return;
+        this.moveSpeed = moveSpeed;
+    }
+
+    public float getMaxRemoveAngle() {
+        return maxRemoveAngle;
+    }
+
+    public void setMaxRemoveAngle(float maxRemoveAngle) {
+        assertNotInLayoutOrScroll(null);
+        if (this.maxRemoveAngle == maxRemoveAngle) return;
+        this.maxRemoveAngle = maxRemoveAngle;
+        requestLayout();
+    }
+
+    public float getMinRemoveAngle() {
+        return minRemoveAngle;
+    }
+
+    public void setMinRemoveAngle(float minRemoveAngle) {
+        assertNotInLayoutOrScroll(null);
+        if (this.minRemoveAngle == minRemoveAngle) return;
+        this.minRemoveAngle = minRemoveAngle;
+        requestLayout();
+    }
+
+    public int getGravity() {
+        return gravity;
+    }
+
+    public void setGravity(int gravity) {
+        assertNotInLayoutOrScroll(null);
+        assertGravity(gravity);
+        if (this.gravity == gravity) return;
+        this.gravity = gravity;
+        if (gravity == LEFT || gravity == RIGHT) {
+            setOrientation(RecyclerView.VERTICAL);
+        } else {
+            setOrientation(RecyclerView.HORIZONTAL);
+        }
+        requestLayout();
+    }
+
+    public boolean getFlipRotate() {
+        return flipRotate;
+    }
+
+    public void setFlipRotate(boolean flipRotate) {
+        assertNotInLayoutOrScroll(null);
+        if (this.flipRotate == flipRotate) return;
+        this.flipRotate = flipRotate;
+        requestLayout();
+    }
+
+    public int getZAlignment() {
+        return zAlignment;
+    }
+
+    public void setZAlignment(int zAlignment) {
+        assertNotInLayoutOrScroll(null);
+        assertZAlignmentState(zAlignment);
+        if (this.zAlignment == zAlignment) return;
+        this.zAlignment = zAlignment;
+        requestLayout();
+    }
+
+    @Override
+    protected float setInterval() {
+        return angleInterval;
+    }
+
+    @Override
+    protected void setUp() {
+        radius = radius == Builder.INVALID_VALUE ? mDecoratedMeasurementInOther : radius;
+    }
+
+    @Override
+    protected float maxRemoveOffset() {
+        return maxRemoveAngle;
+    }
+
+    @Override
+    protected float minRemoveOffset() {
+        return minRemoveAngle;
+    }
+
+    @Override
+    protected int calItemLeft(View itemView, float targetOffset) {
+        switch (gravity) {
+            case LEFT:
+                return (int) (radius * Math.sin(Math.toRadians(90 - targetOffset)) - radius);
+            case RIGHT:
+                return (int) (radius - radius * Math.sin(Math.toRadians(90 - targetOffset)));
+            case TOP:
+            case BOTTOM:
+            default:
+                return (int) (radius * Math.cos(Math.toRadians(90 - targetOffset)));
+        }
+    }
+
+    @Override
+    protected int calItemTop(View itemView, float targetOffset) {
+        switch (gravity) {
+            case LEFT:
+            case RIGHT:
+                return (int) (radius * Math.cos(Math.toRadians(90 - targetOffset)));
+            case TOP:
+                return (int) (radius * Math.sin(Math.toRadians(90 - targetOffset)) - radius);
+            case BOTTOM:
+            default:
+                return (int) (radius - radius * Math.sin(Math.toRadians(90 - targetOffset)));
+        }
+    }
+
+    @Override
+    protected void setItemViewProperty(View itemView, float targetOffset) {
+        switch (gravity) {
+            case RIGHT:
+            case TOP:
+                if (flipRotate) {
+                    itemView.setRotation(targetOffset);
+                } else {
+                    itemView.setRotation(360 - targetOffset);
+                }
+                break;
+            case LEFT:
+            case BOTTOM:
+            default:
+                if (flipRotate) {
+                    itemView.setRotation(360 - targetOffset);
+                } else {
+                    itemView.setRotation(targetOffset);
+                }
+                break;
+        }
+    }
+
+    @Override
+    protected float setViewElevation(View itemView, float targetOffset) {
+        if (zAlignment == LEFT_ON_TOP)
+            return (540 - targetOffset) / 72;
+        else if (zAlignment == RIGHT_ON_TOP)
+            return (targetOffset - 540) / 72;
+        else
+            return (360 - Math.abs(targetOffset)) / 72;
+    }
+
+    @Override
+    protected float getDistanceRatio() {
+        if (moveSpeed == 0) return Float.MAX_VALUE;
+        return 1 / moveSpeed;
+    }
+
+    public static class Builder {
+        private static int INTERVAL_ANGLE = 30;// The default mInterval angle between each items
+        private static float DISTANCE_RATIO = 10f; // Finger swipe distance divide item rotate angle
+        private static int INVALID_VALUE = Integer.MIN_VALUE;
+        private static int MAX_REMOVE_ANGLE = 90;
+        private static int MIN_REMOVE_ANGLE = -90;
+
+        private int radius;
+        private int angleInterval;
+        private float moveSpeed;
+        private float maxRemoveAngle;
+        private float minRemoveAngle;
+        private boolean reverseLayout;
+        private Context context;
+        private int gravity;
+        private boolean flipRotate;
+        private int zAlignment;
+        private int maxVisibleItemCount;
+        private int distanceToBottom;
+
+        public Builder(Context context) {
+            this.context = context;
+            radius = INVALID_VALUE;
+            angleInterval = INTERVAL_ANGLE;
+            moveSpeed = 1 / DISTANCE_RATIO;
+            maxRemoveAngle = MAX_REMOVE_ANGLE;
+            minRemoveAngle = MIN_REMOVE_ANGLE;
+            reverseLayout = false;
+            flipRotate = false;
+            gravity = BOTTOM;
+            zAlignment = LEFT_ON_TOP;
+            maxVisibleItemCount = ViewPagerLayoutManager.DETERMINE_BY_MAX_AND_MIN;
+            distanceToBottom = ViewPagerLayoutManager.INVALID_SIZE;
+        }
+
+        public Builder setRadius(int radius) {
+            this.radius = radius;
+            return this;
+        }
+
+        public Builder setAngleInterval(int angleInterval) {
+            this.angleInterval = angleInterval;
+            return this;
+        }
+
+        public Builder setMoveSpeed(int moveSpeed) {
+            this.moveSpeed = moveSpeed;
+            return this;
+        }
+
+        public Builder setMaxRemoveAngle(float maxRemoveAngle) {
+            this.maxRemoveAngle = maxRemoveAngle;
+            return this;
+        }
+
+        public Builder setMinRemoveAngle(float minRemoveAngle) {
+            this.minRemoveAngle = minRemoveAngle;
+            return this;
+        }
+
+        public Builder setReverseLayout(boolean reverseLayout) {
+            this.reverseLayout = reverseLayout;
+            return this;
+        }
+
+        public Builder setGravity(int gravity) {
+            assertGravity(gravity);
+            this.gravity = gravity;
+            return this;
+        }
+
+        public Builder setFlipRotate(boolean flipRotate) {
+            this.flipRotate = flipRotate;
+            return this;
+        }
+
+        public Builder setZAlignment(int zAlignment) {
+            assertZAlignmentState(zAlignment);
+            this.zAlignment = zAlignment;
+            return this;
+        }
+
+        public Builder setMaxVisibleItemCount(int maxVisibleItemCount) {
+            this.maxVisibleItemCount = maxVisibleItemCount;
+            return this;
+        }
+
+        public Builder setDistanceToBottom(int distanceToBottom) {
+            this.distanceToBottom = distanceToBottom;
+            return this;
+        }
+
+        public CircleLayoutManager build() {
+            return new CircleLayoutManager(this);
+        }
+    }
+}

commonLib/src/main/java/com/common/commonlib/view/viewpagerlayoutmanager/CircleScaleLayoutManager.java

@@ -0,0 +1,395 @@
+package com.common.commonlib.view.viewpagerlayoutmanager;
+
+import android.content.Context;
+import android.view.View;
+
+import androidx.recyclerview.widget.RecyclerView;
+
+/**
+ * An implementation of {@link ViewPagerLayoutManager}
+ * which layouts item in a circle and will change the child's centerScale while scrolling
+ */
+
+@SuppressWarnings({"WeakerAccess", "unused"})
+public class CircleScaleLayoutManager extends ViewPagerLayoutManager {
+    public static final int LEFT = 10;
+    public static final int RIGHT = 11;
+    public static final int TOP = 12;
+    public static final int BOTTOM = 13;
+
+    public static final int LEFT_ON_TOP = 4;
+    public static final int RIGHT_ON_TOP = 5;
+    public static final int CENTER_ON_TOP = 6;
+
+    private int radius;
+    private int angleInterval;
+    private float moveSpeed;
+    private float centerScale;
+    private float maxRemoveAngle;
+    private float minRemoveAngle;
+    private int gravity;
+    private boolean flipRotate;
+    private int zAlignment;
+
+    public CircleScaleLayoutManager(Context context) {
+        this(new Builder(context));
+    }
+
+    public CircleScaleLayoutManager(Context context, int gravity, boolean reverseLayout) {
+        this(new Builder(context).setGravity(gravity).setReverseLayout(reverseLayout));
+    }
+
+    public CircleScaleLayoutManager(Context context, boolean reverseLayout) {
+        this(new Builder(context).setReverseLayout(reverseLayout));
+    }
+
+    public CircleScaleLayoutManager(Builder builder) {
+        this(builder.context, builder.radius, builder.angleInterval, builder.centerScale, builder.moveSpeed,
+                builder.maxRemoveAngle, builder.minRemoveAngle, builder.gravity, builder.zAlignment,
+                builder.flipRotate, builder.maxVisibleItemCount, builder.distanceToBottom, builder.reverseLayout);
+    }
+
+    private CircleScaleLayoutManager(Context context, int radius, int angleInterval, float centerScale,
+                                     float moveSpeed, float max, float min, int gravity, int zAlignment,
+                                     boolean flipRotate, int maxVisibleItemCount, int distanceToBottom, boolean reverseLayout) {
+        super(context, HORIZONTAL, reverseLayout);
+        setEnableBringCenterToFront(true);
+        setMaxVisibleItemCount(maxVisibleItemCount);
+        setDistanceToBottom(distanceToBottom);
+        this.radius = radius;
+        this.angleInterval = angleInterval;
+        this.centerScale = centerScale;
+        this.moveSpeed = moveSpeed;
+        this.maxRemoveAngle = max;
+        this.minRemoveAngle = min;
+        this.gravity = gravity;
+        this.flipRotate = flipRotate;
+        this.zAlignment = zAlignment;
+    }
+
+    private static void assertGravity(int gravity) {
+        if (gravity != LEFT && gravity != RIGHT && gravity != TOP && gravity != BOTTOM) {
+            throw new IllegalArgumentException("gravity must be one of LEFT RIGHT TOP and BOTTOM");
+        }
+    }
+
+    private static void assertZAlignmentState(int zAlignment) {
+        if (zAlignment != LEFT_ON_TOP && zAlignment != RIGHT_ON_TOP && zAlignment != CENTER_ON_TOP) {
+            throw new IllegalArgumentException("zAlignment must be one of LEFT_ON_TOP RIGHT_ON_TOP and CENTER_ON_TOP");
+        }
+    }
+
+    public int getRadius() {
+        return radius;
+    }
+
+    public void setRadius(int radius) {
+        assertNotInLayoutOrScroll(null);
+        if (this.radius == radius) return;
+        this.radius = radius;
+        removeAllViews();
+    }
+
+    public int getAngleInterval() {
+        return angleInterval;
+    }
+
+    public void setAngleInterval(int angleInterval) {
+        assertNotInLayoutOrScroll(null);
+        if (this.angleInterval == angleInterval) return;
+        this.angleInterval = angleInterval;
+        removeAllViews();
+    }
+
+    public float getCenterScale() {
+        return centerScale;
+    }
+
+    public void setCenterScale(float centerScale) {
+        assertNotInLayoutOrScroll(null);
+        if (this.centerScale == centerScale) return;
+        this.centerScale = centerScale;
+        requestLayout();
+    }
+
+    public float getMoveSpeed() {
+        return moveSpeed;
+    }
+
+    public void setMoveSpeed(float moveSpeed) {
+        assertNotInLayoutOrScroll(null);
+        if (this.moveSpeed == moveSpeed) return;
+        this.moveSpeed = moveSpeed;
+    }
+
+    public float getMaxRemoveAngle() {
+        return maxRemoveAngle;
+    }
+
+    public void setMaxRemoveAngle(float maxRemoveAngle) {
+        assertNotInLayoutOrScroll(null);
+        if (this.maxRemoveAngle == maxRemoveAngle) return;
+        this.maxRemoveAngle = maxRemoveAngle;
+        requestLayout();
+    }
+
+    public float getMinRemoveAngle() {
+        return minRemoveAngle;
+    }
+
+    public void setMinRemoveAngle(float minRemoveAngle) {
+        assertNotInLayoutOrScroll(null);
+        if (this.minRemoveAngle == minRemoveAngle) return;
+        this.minRemoveAngle = minRemoveAngle;
+        requestLayout();
+    }
+
+    public int getGravity() {
+        return gravity;
+    }
+
+    public void setGravity(int gravity) {
+        assertNotInLayoutOrScroll(null);
+        assertGravity(gravity);
+        if (this.gravity == gravity) return;
+        this.gravity = gravity;
+        if (gravity == LEFT || gravity == RIGHT) {
+            setOrientation(RecyclerView.VERTICAL);
+        } else {
+            setOrientation(RecyclerView.HORIZONTAL);
+        }
+        requestLayout();
+    }
+
+    public boolean getFlipRotate() {
+        return flipRotate;
+    }
+
+    public void setFlipRotate(boolean flipRotate) {
+        assertNotInLayoutOrScroll(null);
+        if (this.flipRotate == flipRotate) return;
+        this.flipRotate = flipRotate;
+        requestLayout();
+    }
+
+    public int getZAlignment() {
+        return zAlignment;
+    }
+
+    public void setZAlignment(int zAlignment) {
+        assertNotInLayoutOrScroll(null);
+        assertZAlignmentState(zAlignment);
+        if (this.zAlignment == zAlignment) return;
+        this.zAlignment = zAlignment;
+        requestLayout();
+    }
+
+    @Override
+    protected float setInterval() {
+        return angleInterval;
+    }
+
+    @Override
+    protected void setUp() {
+        radius = radius == Builder.INVALID_VALUE ? mDecoratedMeasurementInOther : radius;
+    }
+
+    @Override
+    protected float maxRemoveOffset() {
+        return maxRemoveAngle;
+    }
+
+    @Override
+    protected float minRemoveOffset() {
+        return minRemoveAngle;
+    }
+
+    @Override
+    protected int calItemLeft(View itemView, float targetOffset) {
+        switch (gravity) {
+            case LEFT:
+                return (int) (radius * Math.sin(Math.toRadians(90 - targetOffset)) - radius);
+            case RIGHT:
+                return (int) (radius - radius * Math.sin(Math.toRadians(90 - targetOffset)));
+            case TOP:
+            case BOTTOM:
+            default:
+                return (int) (radius * Math.cos(Math.toRadians(90 - targetOffset)));
+        }
+    }
+
+    @Override
+    protected int calItemTop(View itemView, float targetOffset) {
+        switch (gravity) {
+            case LEFT:
+            case RIGHT:
+                return (int) (radius * Math.cos(Math.toRadians(90 - targetOffset)));
+            case TOP:
+                return (int) (radius * Math.sin(Math.toRadians(90 - targetOffset)) - radius);
+            case BOTTOM:
+            default:
+                return (int) (radius - radius * Math.sin(Math.toRadians(90 - targetOffset)));
+        }
+    }
+
+    @Override
+    protected void setItemViewProperty(View itemView, float targetOffset) {
+        float scale = 1f;
+        switch (gravity) {
+            case RIGHT:
+            case TOP:
+                if (flipRotate) {
+                    itemView.setRotation(targetOffset);
+                    if (targetOffset < angleInterval && targetOffset > -angleInterval) {
+                        float diff = Math.abs(Math.abs(itemView.getRotation() - angleInterval) - angleInterval);
+                        scale = (centerScale - 1f) / -angleInterval * diff + centerScale;
+                    }
+                } else {
+                    itemView.setRotation(360 - targetOffset);
+                    if (targetOffset < angleInterval && targetOffset > -angleInterval) {
+                        float diff = Math.abs(Math.abs(360 - itemView.getRotation() - angleInterval) - angleInterval);
+                        scale = (centerScale - 1f) / -angleInterval * diff + centerScale;
+                    }
+                }
+                break;
+            case LEFT:
+            case BOTTOM:
+            default:
+                if (flipRotate) {
+                    itemView.setRotation(360 - targetOffset);
+                    if (targetOffset < angleInterval && targetOffset > -angleInterval) {
+                        float diff = Math.abs(Math.abs(360 - itemView.getRotation() - angleInterval) - angleInterval);
+                        scale = (centerScale - 1f) / -angleInterval * diff + centerScale;
+                    }
+                } else {
+                    itemView.setRotation(targetOffset);
+                    if (targetOffset < angleInterval && targetOffset > -angleInterval) {
+                        float diff = Math.abs(Math.abs(itemView.getRotation() - angleInterval) - angleInterval);
+                        scale = (centerScale - 1f) / -angleInterval * diff + centerScale;
+                    }
+                }
+                break;
+        }
+        itemView.setScaleX(scale);
+        itemView.setScaleY(scale);
+    }
+
+    @Override
+    protected float setViewElevation(View itemView, float targetOffset) {
+        if (zAlignment == LEFT_ON_TOP)
+            return (540 - targetOffset) / 72;
+        else if (zAlignment == RIGHT_ON_TOP)
+            return (targetOffset - 540) / 72;
+        else
+            return (360 - Math.abs(targetOffset)) / 72;
+    }
+
+    @Override
+    protected float getDistanceRatio() {
+        if (moveSpeed == 0) return Float.MAX_VALUE;
+        return 1 / moveSpeed;
+    }
+
+    public static class Builder {
+        private static final float SCALE_RATE = 1.2f;
+        private static int INTERVAL_ANGLE = 30;// The default mInterval angle between each items
+        private static float DISTANCE_RATIO = 10f; // Finger swipe distance divide item rotate angle
+        private static int INVALID_VALUE = Integer.MIN_VALUE;
+
+        private int radius;
+        private int angleInterval;
+        private float centerScale;
+        private float moveSpeed;
+        private float maxRemoveAngle;
+        private float minRemoveAngle;
+        private boolean reverseLayout;
+        private Context context;
+        private int gravity;
+        private boolean flipRotate;
+        private int zAlignment;
+        private int maxVisibleItemCount;
+        private int distanceToBottom;
+
+        public Builder(Context context) {
+            this.context = context;
+            radius = INVALID_VALUE;
+            angleInterval = INTERVAL_ANGLE;
+            centerScale = SCALE_RATE;
+            moveSpeed = 1 / DISTANCE_RATIO;
+            maxRemoveAngle = 90;
+            minRemoveAngle = -90;
+            reverseLayout = false;
+            flipRotate = false;
+            gravity = BOTTOM;
+            zAlignment = CENTER_ON_TOP;
+            distanceToBottom = ViewPagerLayoutManager.INVALID_SIZE;
+            maxVisibleItemCount = ViewPagerLayoutManager.DETERMINE_BY_MAX_AND_MIN;
+        }
+
+        public Builder setRadius(int radius) {
+            this.radius = radius;
+            return this;
+        }
+
+        public Builder setAngleInterval(int angleInterval) {
+            this.angleInterval = angleInterval;
+            return this;
+        }
+
+        public Builder setCenterScale(float centerScale) {
+            this.centerScale = centerScale;
+            return this;
+        }
+
+        public Builder setMoveSpeed(int moveSpeed) {
+            this.moveSpeed = moveSpeed;
+            return this;
+        }
+
+        public Builder setMaxRemoveAngle(float maxRemoveAngle) {
+            this.maxRemoveAngle = maxRemoveAngle;
+            return this;
+        }
+
+        public Builder setMinRemoveAngle(float minRemoveAngle) {
+            this.minRemoveAngle = minRemoveAngle;
+            return this;
+        }
+
+        public Builder setReverseLayout(boolean reverseLayout) {
+            this.reverseLayout = reverseLayout;
+            return this;
+        }
+
+        public Builder setGravity(int gravity) {
+            assertGravity(gravity);
+            this.gravity = gravity;
+            return this;
+        }
+
+        public Builder setFlipRotate(boolean flipRotate) {
+            this.flipRotate = flipRotate;
+            return this;
+        }
+
+        public Builder setZAlignment(int zAlignment) {
+            assertZAlignmentState(zAlignment);
+            this.zAlignment = zAlignment;
+            return this;
+        }
+
+        public Builder setMaxVisibleItemCount(int maxVisibleItemCount) {
+            this.maxVisibleItemCount = maxVisibleItemCount;
+            return this;
+        }
+
+        public Builder setDistanceToBottom(int distanceToBottom) {
+            this.distanceToBottom = distanceToBottom;
+            return this;
+        }
+
+        public CircleScaleLayoutManager build() {
+            return new CircleScaleLayoutManager(this);
+        }
+    }
+}

commonLib/src/main/java/com/common/commonlib/view/viewpagerlayoutmanager/GalleryLayoutManager.java

@@ -0,0 +1,288 @@
+package com.common.commonlib.view.viewpagerlayoutmanager;
+
+import android.content.Context;
+import android.view.View;
+
+import androidx.recyclerview.widget.RecyclerView;
+
+/**
+ * An implementation of {@link ViewPagerLayoutManager}
+ * which will change rotate x or rotate y
+ */
+
+@SuppressWarnings({"WeakerAccess", "unused"})
+public class GalleryLayoutManager extends ViewPagerLayoutManager {
+    private final float MAX_ELEVATION = 5F;
+
+    private int itemSpace;
+    private float moveSpeed;
+    private float maxAlpha;
+    private float minAlpha;
+    private float angle;
+    private boolean flipRotate;
+    private boolean rotateFromEdge;
+
+    public GalleryLayoutManager(Context context, int itemSpace) {
+        this(new Builder(context, itemSpace));
+    }
+
+    public GalleryLayoutManager(Context context, int itemSpace, int orientation) {
+        this(new Builder(context, itemSpace).setOrientation(orientation));
+    }
+
+    public GalleryLayoutManager(Context context, int itemSpace, int orientation, boolean reverseLayout) {
+        this(new Builder(context, itemSpace).setOrientation(orientation).setReverseLayout(reverseLayout));
+    }
+
+    public GalleryLayoutManager(Builder builder) {
+        this(builder.context, builder.itemSpace, builder.angle, builder.maxAlpha, builder.minAlpha,
+                builder.orientation, builder.moveSpeed, builder.flipRotate, builder.rotateFromEdge,
+                builder.maxVisibleItemCount, builder.distanceToBottom, builder.reverseLayout);
+    }
+
+    private GalleryLayoutManager(Context context, int itemSpace, float angle, float maxAlpha, float minAlpha,
+                                 int orientation, float moveSpeed, boolean flipRotate, boolean rotateFromEdge,
+                                 int maxVisibleItemCount, int distanceToBottom, boolean reverseLayout) {
+        super(context, orientation, reverseLayout);
+        setDistanceToBottom(distanceToBottom);
+        setMaxVisibleItemCount(maxVisibleItemCount);
+        this.itemSpace = itemSpace;
+        this.moveSpeed = moveSpeed;
+        this.angle = angle;
+        this.maxAlpha = maxAlpha;
+        this.minAlpha = minAlpha;
+        this.flipRotate = flipRotate;
+        this.rotateFromEdge = rotateFromEdge;
+    }
+
+    public int getItemSpace() {
+        return itemSpace;
+    }
+
+    public void setItemSpace(int itemSpace) {
+        assertNotInLayoutOrScroll(null);
+        if (this.itemSpace == itemSpace) return;
+        this.itemSpace = itemSpace;
+        removeAllViews();
+    }
+
+    public float getMaxAlpha() {
+        return maxAlpha;
+    }
+
+    public void setMaxAlpha(float maxAlpha) {
+        assertNotInLayoutOrScroll(null);
+        if (maxAlpha > 1) maxAlpha = 1;
+        if (this.maxAlpha == maxAlpha) return;
+        this.maxAlpha = maxAlpha;
+        requestLayout();
+    }
+
+    public float getMinAlpha() {
+        return minAlpha;
+    }
+
+    public void setMinAlpha(float minAlpha) {
+        assertNotInLayoutOrScroll(null);
+        if (minAlpha < 0) minAlpha = 0;
+        if (this.minAlpha == minAlpha) return;
+        this.minAlpha = minAlpha;
+        requestLayout();
+    }
+
+    public float getAngle() {
+        return angle;
+    }
+
+    public void setAngle(float angle) {
+        assertNotInLayoutOrScroll(null);
+        if (this.angle == angle) return;
+        this.angle = angle;
+        requestLayout();
+    }
+
+    public float getMoveSpeed() {
+        return moveSpeed;
+    }
+
+    public void setMoveSpeed(float moveSpeed) {
+        assertNotInLayoutOrScroll(null);
+        if (this.moveSpeed == moveSpeed) return;
+        this.moveSpeed = moveSpeed;
+    }
+
+    public boolean getFlipRotate() {
+        return flipRotate;
+    }
+
+    public void setFlipRotate(boolean flipRotate) {
+        assertNotInLayoutOrScroll(null);
+        if (this.flipRotate == flipRotate) return;
+        this.flipRotate = flipRotate;
+        requestLayout();
+    }
+
+    public boolean getRotateFromEdge() {
+        return rotateFromEdge;
+    }
+
+    public void setRotateFromEdge(boolean rotateFromEdge) {
+        assertNotInLayoutOrScroll(null);
+        if (this.rotateFromEdge == rotateFromEdge) return;
+        this.rotateFromEdge = rotateFromEdge;
+        removeAllViews();
+    }
+
+    @Override
+    protected float setInterval() {
+        return mDecoratedMeasurement + itemSpace;
+    }
+
+    @Override
+    protected void setItemViewProperty(View itemView, float targetOffset) {
+        final float rotation = calRotation(targetOffset);
+        if (getOrientation() == RecyclerView.HORIZONTAL) {
+            if (rotateFromEdge) {
+                itemView.setPivotX(rotation > 0 ? 0 : mDecoratedMeasurement);
+                itemView.setPivotY(mDecoratedMeasurementInOther * 0.5f);
+            }
+            if (flipRotate) {
+                itemView.setRotationX(rotation);
+            } else {
+                itemView.setRotationY(rotation);
+            }
+        } else {
+            if (rotateFromEdge) {
+                itemView.setPivotY(rotation > 0 ? 0 : mDecoratedMeasurement);
+                itemView.setPivotX(mDecoratedMeasurementInOther * 0.5f);
+
+            }
+            if (flipRotate) {
+                itemView.setRotationY(-rotation);
+            } else {
+                itemView.setRotationX(-rotation);
+            }
+        }
+        final float alpha = calAlpha(targetOffset);
+        itemView.setAlpha(alpha);
+    }
+
+    @Override
+    protected float setViewElevation(View itemView, float targetOffset) {
+        final float ele = Math.max(Math.abs(itemView.getRotationX()), Math.abs(itemView.getRotationY())) * MAX_ELEVATION / 360;
+        return MAX_ELEVATION - ele;
+    }
+
+    @Override
+    protected float getDistanceRatio() {
+        if (moveSpeed == 0) return Float.MAX_VALUE;
+        return 1 / moveSpeed;
+    }
+
+    private float calRotation(float targetOffset) {
+        return -angle / mInterval * targetOffset;
+    }
+
+    private float calAlpha(float targetOffset) {
+        final float offset = Math.abs(targetOffset);
+        float alpha = (minAlpha - maxAlpha) / mInterval * offset + maxAlpha;
+        if (offset >= mInterval) alpha = minAlpha;
+        return alpha;
+    }
+
+    public static class Builder {
+        private static final float DEFAULT_SPEED = 1f;
+        private static float INTERVAL_ANGLE = 30f;
+        private static float MIN_ALPHA = 0.5f;
+        private static float MAX_ALPHA = 1f;
+
+        private int itemSpace;
+        private float moveSpeed;
+        private int orientation;
+        private float maxAlpha;
+        private float minAlpha;
+        private float angle;
+        private boolean flipRotate;
+        private boolean reverseLayout;
+        private Context context;
+        private int maxVisibleItemCount;
+        private int distanceToBottom;
+        private boolean rotateFromEdge;
+
+        public Builder(Context context, int itemSpace) {
+            this.itemSpace = itemSpace;
+            this.context = context;
+            orientation = HORIZONTAL;
+            angle = INTERVAL_ANGLE;
+            maxAlpha = MAX_ALPHA;
+            minAlpha = MIN_ALPHA;
+            this.moveSpeed = DEFAULT_SPEED;
+            reverseLayout = false;
+            flipRotate = false;
+            rotateFromEdge = false;
+            distanceToBottom = ViewPagerLayoutManager.INVALID_SIZE;
+            maxVisibleItemCount = ViewPagerLayoutManager.DETERMINE_BY_MAX_AND_MIN;
+        }
+
+        public Builder setItemSpace(int itemSpace) {
+            this.itemSpace = itemSpace;
+            return this;
+        }
+
+        public Builder setMoveSpeed(float moveSpeed) {
+            this.moveSpeed = moveSpeed;
+            return this;
+        }
+
+        public Builder setOrientation(int orientation) {
+            this.orientation = orientation;
+            return this;
+        }
+
+        public Builder setMaxAlpha(float maxAlpha) {
+            if (maxAlpha > 1) maxAlpha = 1;
+            this.maxAlpha = maxAlpha;
+            return this;
+        }
+
+        public Builder setMinAlpha(float minAlpha) {
+            if (minAlpha < 0) minAlpha = 0;
+            this.minAlpha = minAlpha;
+            return this;
+        }
+
+        public Builder setAngle(float angle) {
+            this.angle = angle;
+            return this;
+        }
+
+        public Builder setFlipRotate(boolean flipRotate) {
+            this.flipRotate = flipRotate;
+            return this;
+        }
+
+        public Builder setReverseLayout(boolean reverseLayout) {
+            this.reverseLayout = reverseLayout;
+            return this;
+        }
+
+        public Builder setMaxVisibleItemCount(int maxVisibleItemCount) {
+            this.maxVisibleItemCount = maxVisibleItemCount;
+            return this;
+        }
+
+        public Builder setDistanceToBottom(int distanceToBottom) {
+            this.distanceToBottom = distanceToBottom;
+            return this;
+        }
+
+        public Builder setRotateFromEdge(boolean rotateFromEdge) {
+            this.rotateFromEdge = rotateFromEdge;
+            return this;
+        }
+
+        public GalleryLayoutManager build() {
+            return new GalleryLayoutManager(this);
+        }
+    }
+}

commonLib/src/main/java/com/common/commonlib/view/viewpagerlayoutmanager/OrientationHelper.java

@@ -0,0 +1,413 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.common.commonlib.view.viewpagerlayoutmanager;
+
+import android.graphics.Rect;
+import android.view.View;
+import android.widget.LinearLayout;
+
+import androidx.recyclerview.widget.RecyclerView;
+
+@SuppressWarnings({"WeakerAccess","unused"})
+public abstract class OrientationHelper {
+
+    private static final int INVALID_SIZE = Integer.MIN_VALUE;
+
+    protected final RecyclerView.LayoutManager mLayoutManager;
+
+    public static final int HORIZONTAL = LinearLayout.HORIZONTAL;
+
+    public static final int VERTICAL = LinearLayout.VERTICAL;
+
+    private int mLastTotalSpace = INVALID_SIZE;
+
+    final Rect mTmpRect = new Rect();
+
+    private OrientationHelper(RecyclerView.LayoutManager layoutManager) {
+        mLayoutManager = layoutManager;
+    }
+
+    /**
+     * Call this method after onLayout method is complete if state is NOT pre-layout.
+     * This method records information like layout bounds that might be useful in the next layout
+     * calculations.
+     */
+    public void onLayoutComplete() {
+        mLastTotalSpace = getTotalSpace();
+    }
+
+    /**
+     * Returns the layout space change between the previous layout pass and current layout pass.
+     * <p>
+     * Make sure you call {@link #onLayoutComplete()} at the end of your LayoutManager's
+     * {@link RecyclerView.LayoutManager#onLayoutChildren(RecyclerView.Recycler,
+     * RecyclerView.State)} method.
+     *
+     * @return The difference between the current total space and previous layout's total space.
+     * @see #onLayoutComplete()
+     */
+    public int getTotalSpaceChange() {
+        return INVALID_SIZE == mLastTotalSpace ? 0 : getTotalSpace() - mLastTotalSpace;
+    }
+
+    /**
+     * Returns the start of the view including its decoration and margin.
+     * <p>
+     * For example, for the horizontal helper, if a View's left is at pixel 20, has 2px left
+     * decoration and 3px left margin, returned value will be 15px.
+     *
+     * @param view The view element to check
+     * @return The first pixel of the element
+     * @see #getDecoratedEnd(View)
+     */
+    public abstract int getDecoratedStart(View view);
+
+    /**
+     * Returns the end of the view including its decoration and margin.
+     * <p>
+     * For example, for the horizontal helper, if a View's right is at pixel 200, has 2px right
+     * decoration and 3px right margin, returned value will be 205.
+     *
+     * @param view The view element to check
+     * @return The last pixel of the element
+     * @see #getDecoratedStart(View)
+     */
+    public abstract int getDecoratedEnd(View view);
+
+    /**
+     * Returns the end of the View after its matrix transformations are applied to its layout
+     * position.
+     * <p>
+     * This method is useful when trying to detect the visible edge of a View.
+     * <p>
+     * It includes the decorations but does not include the margins.
+     *
+     * @param view The view whose transformed end will be returned
+     * @return The end of the View after its decor insets and transformation matrix is applied to
+     * its position
+     * @see RecyclerView.LayoutManager#getTransformedBoundingBox(View, boolean, Rect)
+     */
+    public abstract int getTransformedEndWithDecoration(View view);
+
+    /**
+     * Returns the start of the View after its matrix transformations are applied to its layout
+     * position.
+     * <p>
+     * This method is useful when trying to detect the visible edge of a View.
+     * <p>
+     * It includes the decorations but does not include the margins.
+     *
+     * @param view The view whose transformed start will be returned
+     * @return The start of the View after its decor insets and transformation matrix is applied to
+     * its position
+     * @see RecyclerView.LayoutManager#getTransformedBoundingBox(View, boolean, Rect)
+     */
+    public abstract int getTransformedStartWithDecoration(View view);
+
+    /**
+     * Returns the space occupied by this View in the current orientation including decorations and
+     * margins.
+     *
+     * @param view The view element to check
+     * @return Total space occupied by this view
+     * @see #getDecoratedMeasurementInOther(View)
+     */
+    public abstract int getDecoratedMeasurement(View view);
+
+    /**
+     * Returns the space occupied by this View in the perpendicular orientation including
+     * decorations and margins.
+     *
+     * @param view The view element to check
+     * @return Total space occupied by this view in the perpendicular orientation to current one
+     * @see #getDecoratedMeasurement(View)
+     */
+    public abstract int getDecoratedMeasurementInOther(View view);
+
+    /**
+     * Returns the start position of the layout after the start padding is added.
+     *
+     * @return The very first pixel we can draw.
+     */
+    public abstract int getStartAfterPadding();
+
+    /**
+     * Returns the end position of the layout after the end padding is removed.
+     *
+     * @return The end boundary for this layout.
+     */
+    public abstract int getEndAfterPadding();
+
+    /**
+     * Returns the end position of the layout without taking padding into account.
+     *
+     * @return The end boundary for this layout without considering padding.
+     */
+    public abstract int getEnd();
+
+    /**
+     * Returns the total space to layout. This number is the difference between
+     * {@link #getEndAfterPadding()} and {@link #getStartAfterPadding()}.
+     *
+     * @return Total space to layout children
+     */
+    public abstract int getTotalSpace();
+
+    /**
+     * Returns the total space in other direction to layout. This number is the difference between
+     * {@link #getEndAfterPadding()} and {@link #getStartAfterPadding()}.
+     *
+     * @return Total space to layout children
+     */
+    public abstract int getTotalSpaceInOther();
+
+    /**
+     * Returns the padding at the end of the layout. For horizontal helper, this is the right
+     * padding and for vertical helper, this is the bottom padding. This method does not check
+     * whether the layout is RTL or not.
+     *
+     * @return The padding at the end of the layout.
+     */
+    public abstract int getEndPadding();
+
+    /**
+     * Returns the MeasureSpec mode for the current orientation from the LayoutManager.
+     *
+     * @return The current measure spec mode.
+     * @see View.MeasureSpec
+     * @see RecyclerView.LayoutManager#getWidthMode()
+     * @see RecyclerView.LayoutManager#getHeightMode()
+     */
+    public abstract int getMode();
+
+    /**
+     * Returns the MeasureSpec mode for the perpendicular orientation from the LayoutManager.
+     *
+     * @return The current measure spec mode.
+     * @see View.MeasureSpec
+     * @see RecyclerView.LayoutManager#getWidthMode()
+     * @see RecyclerView.LayoutManager#getHeightMode()
+     */
+    public abstract int getModeInOther();
+
+    /**
+     * Creates an OrientationHelper for the given LayoutManager and orientation.
+     *
+     * @param layoutManager LayoutManager to attach to
+     * @param orientation   Desired orientation. Should be {@link #HORIZONTAL} or {@link #VERTICAL}
+     * @return A new OrientationHelper
+     */
+    public static OrientationHelper createOrientationHelper(
+            RecyclerView.LayoutManager layoutManager, int orientation) {
+        switch (orientation) {
+            case HORIZONTAL:
+                return createHorizontalHelper(layoutManager);
+            case VERTICAL:
+                return createVerticalHelper(layoutManager);
+        }
+        throw new IllegalArgumentException("invalid orientation");
+    }
+
+    /**
+     * Creates a horizontal OrientationHelper for the given LayoutManager.
+     *
+     * @param layoutManager The LayoutManager to attach to.
+     * @return A new OrientationHelper
+     */
+    public static OrientationHelper createHorizontalHelper(
+            RecyclerView.LayoutManager layoutManager) {
+        return new OrientationHelper(layoutManager) {
+            @Override
+            public int getEndAfterPadding() {
+                return mLayoutManager.getWidth() - mLayoutManager.getPaddingRight();
+            }
+
+            @Override
+            public int getEnd() {
+                return mLayoutManager.getWidth();
+            }
+
+            @Override
+            public int getStartAfterPadding() {
+                return mLayoutManager.getPaddingLeft();
+            }
+
+            @Override
+            public int getDecoratedMeasurement(View view) {
+                final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams)
+                        view.getLayoutParams();
+                return mLayoutManager.getDecoratedMeasuredWidth(view) + params.leftMargin
+                        + params.rightMargin;
+            }
+
+            @Override
+            public int getDecoratedMeasurementInOther(View view) {
+                final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams)
+                        view.getLayoutParams();
+                return mLayoutManager.getDecoratedMeasuredHeight(view) + params.topMargin
+                        + params.bottomMargin;
+            }
+
+            @Override
+            public int getDecoratedEnd(View view) {
+                final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams)
+                        view.getLayoutParams();
+                return mLayoutManager.getDecoratedRight(view) + params.rightMargin;
+            }
+
+            @Override
+            public int getDecoratedStart(View view) {
+                final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams)
+                        view.getLayoutParams();
+                return mLayoutManager.getDecoratedLeft(view) - params.leftMargin;
+            }
+
+            @Override
+            public int getTransformedEndWithDecoration(View view) {
+                mLayoutManager.getTransformedBoundingBox(view, true, mTmpRect);
+                return mTmpRect.right;
+            }
+
+            @Override
+            public int getTransformedStartWithDecoration(View view) {
+                mLayoutManager.getTransformedBoundingBox(view, true, mTmpRect);
+                return mTmpRect.left;
+            }
+
+            @Override
+            public int getTotalSpace() {
+                return mLayoutManager.getWidth() - mLayoutManager.getPaddingLeft()
+                        - mLayoutManager.getPaddingRight();
+            }
+
+            @Override
+            public int getTotalSpaceInOther() {
+                return mLayoutManager.getHeight() - mLayoutManager.getPaddingTop()
+                        - mLayoutManager.getPaddingBottom();
+            }
+
+            @Override
+            public int getEndPadding() {
+                return mLayoutManager.getPaddingRight();
+            }
+
+            @Override
+            public int getMode() {
+                return mLayoutManager.getWidthMode();
+            }
+
+            @Override
+            public int getModeInOther() {
+                return mLayoutManager.getHeightMode();
+            }
+        };
+    }
+
+    /**
+     * Creates a vertical OrientationHelper for the given LayoutManager.
+     *
+     * @param layoutManager The LayoutManager to attach to.
+     * @return A new OrientationHelper
+     */
+    public static OrientationHelper createVerticalHelper(RecyclerView.LayoutManager layoutManager) {
+        return new OrientationHelper(layoutManager) {
+            @Override
+            public int getEndAfterPadding() {
+                return mLayoutManager.getHeight() - mLayoutManager.getPaddingBottom();
+            }
+
+            @Override
+            public int getEnd() {
+                return mLayoutManager.getHeight();
+            }
+
+            @Override
+            public int getStartAfterPadding() {
+                return mLayoutManager.getPaddingTop();
+            }
+
+            @Override
+            public int getDecoratedMeasurement(View view) {
+                final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams)
+                        view.getLayoutParams();
+                return mLayoutManager.getDecoratedMeasuredHeight(view) + params.topMargin
+                        + params.bottomMargin;
+            }
+
+            @Override
+            public int getDecoratedMeasurementInOther(View view) {
+                final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams)
+                        view.getLayoutParams();
+                return mLayoutManager.getDecoratedMeasuredWidth(view) + params.leftMargin
+                        + params.rightMargin;
+            }
+
+            @Override
+            public int getDecoratedEnd(View view) {
+                final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams)
+                        view.getLayoutParams();
+                return mLayoutManager.getDecoratedBottom(view) + params.bottomMargin;
+            }
+
+            @Override
+            public int getDecoratedStart(View view) {
+                final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams)
+                        view.getLayoutParams();
+                return mLayoutManager.getDecoratedTop(view) - params.topMargin;
+            }
+
+            @Override
+            public int getTransformedEndWithDecoration(View view) {
+                mLayoutManager.getTransformedBoundingBox(view, true, mTmpRect);
+                return mTmpRect.bottom;
+            }
+
+            @Override
+            public int getTransformedStartWithDecoration(View view) {
+                mLayoutManager.getTransformedBoundingBox(view, true, mTmpRect);
+                return mTmpRect.top;
+            }
+
+            @Override
+            public int getTotalSpace() {
+                return mLayoutManager.getHeight() - mLayoutManager.getPaddingTop()
+                        - mLayoutManager.getPaddingBottom();
+            }
+
+            @Override
+            public int getTotalSpaceInOther() {
+                return mLayoutManager.getWidth() - mLayoutManager.getPaddingLeft()
+                        - mLayoutManager.getPaddingRight();
+            }
+
+            @Override
+            public int getEndPadding() {
+                return mLayoutManager.getPaddingBottom();
+            }
+
+            @Override
+            public int getMode() {
+                return mLayoutManager.getHeightMode();
+            }
+
+            @Override
+            public int getModeInOther() {
+                return mLayoutManager.getWidthMode();
+            }
+        };
+    }
+}

commonLib/src/main/java/com/common/commonlib/view/viewpagerlayoutmanager/PageSnapHelper.java

@@ -0,0 +1,46 @@
+package com.common.commonlib.view.viewpagerlayoutmanager;
+
+import androidx.recyclerview.widget.RecyclerView;
+
+public class PageSnapHelper extends CenterSnapHelper {
+
+    @Override
+    public boolean onFling(int velocityX, int velocityY) {
+        ViewPagerLayoutManager layoutManager = (ViewPagerLayoutManager) mRecyclerView.getLayoutManager();
+        if (layoutManager == null) {
+            return false;
+        }
+        RecyclerView.Adapter adapter = mRecyclerView.getAdapter();
+        if (adapter == null) {
+            return false;
+        }
+
+        if (!layoutManager.getInfinite() &&
+                (layoutManager.mOffset == layoutManager.getMaxOffset()
+                        || layoutManager.mOffset == layoutManager.getMinOffset())) {
+            return false;
+        }
+
+        final int minFlingVelocity = mRecyclerView.getMinFlingVelocity();
+        mGravityScroller.fling(0, 0, velocityX, velocityY,
+                Integer.MIN_VALUE, Integer.MAX_VALUE, Integer.MIN_VALUE, Integer.MAX_VALUE);
+
+        if (layoutManager.mOrientation == ViewPagerLayoutManager.VERTICAL
+                && Math.abs(velocityY) > minFlingVelocity) {
+            final int currentPosition = layoutManager.getCurrentPositionOffset();
+            final int offsetPosition = mGravityScroller.getFinalY() * layoutManager.getDistanceRatio() > layoutManager.mInterval ? 1 : 0;
+            ScrollHelper.smoothScrollToPosition(mRecyclerView, layoutManager, layoutManager.getReverseLayout() ?
+                    -currentPosition - offsetPosition : currentPosition + offsetPosition);
+            return true;
+        } else if (layoutManager.mOrientation == ViewPagerLayoutManager.HORIZONTAL
+                && Math.abs(velocityX) > minFlingVelocity) {
+            final int currentPosition = layoutManager.getCurrentPositionOffset();
+            final int offsetPosition = mGravityScroller.getFinalX() * layoutManager.getDistanceRatio() > layoutManager.mInterval ? 1 : 0;
+            ScrollHelper.smoothScrollToPosition(mRecyclerView, layoutManager, layoutManager.getReverseLayout() ?
+                    -currentPosition - offsetPosition : currentPosition + offsetPosition);
+            return true;
+        }
+
+        return true;
+    }
+}

commonLib/src/main/java/com/common/commonlib/view/viewpagerlayoutmanager/RotateLayoutManager.java

@@ -0,0 +1,178 @@
+package com.common.commonlib.view.viewpagerlayoutmanager;
+
+import android.content.Context;
+import android.view.View;
+
+/**
+ * An implementation of {@link ViewPagerLayoutManager}
+ * which rotates items
+ */
+
+@SuppressWarnings({"WeakerAccess", "unused"})
+public class RotateLayoutManager extends ViewPagerLayoutManager {
+
+    private int itemSpace;
+    private float angle;
+    private float moveSpeed;
+    private boolean reverseRotate;
+
+    public RotateLayoutManager(Context context, int itemSpace) {
+        this(new Builder(context, itemSpace));
+    }
+
+    public RotateLayoutManager(Context context, int itemSpace, int orientation) {
+        this(new Builder(context, itemSpace).setOrientation(orientation));
+    }
+
+    public RotateLayoutManager(Context context, int itemSpace, int orientation, boolean reverseLayout) {
+        this(new Builder(context, itemSpace).setOrientation(orientation).setReverseLayout(reverseLayout));
+    }
+
+    public RotateLayoutManager(Builder builder) {
+        this(builder.context, builder.itemSpace, builder.angle, builder.orientation, builder.moveSpeed,
+                builder.reverseRotate, builder.maxVisibleItemCount, builder.distanceToBottom,
+                builder.reverseLayout);
+    }
+
+    private RotateLayoutManager(Context context, int itemSpace, float angle, int orientation, float moveSpeed,
+                                boolean reverseRotate, int maxVisibleItemCount, int distanceToBottom,
+                                boolean reverseLayout) {
+        super(context, orientation, reverseLayout);
+        setDistanceToBottom(distanceToBottom);
+        setMaxVisibleItemCount(maxVisibleItemCount);
+        this.itemSpace = itemSpace;
+        this.angle = angle;
+        this.moveSpeed = moveSpeed;
+        this.reverseRotate = reverseRotate;
+    }
+
+    public int getItemSpace() {
+        return itemSpace;
+    }
+
+    public float getAngle() {
+        return angle;
+    }
+
+    public float getMoveSpeed() {
+        return moveSpeed;
+    }
+
+    public boolean getReverseRotate() {
+        return reverseRotate;
+    }
+
+    public void setItemSpace(int itemSpace) {
+        assertNotInLayoutOrScroll(null);
+        if (this.itemSpace == itemSpace) return;
+        this.itemSpace = itemSpace;
+        removeAllViews();
+    }
+
+    public void setAngle(float centerScale) {
+        assertNotInLayoutOrScroll(null);
+        if (this.angle == centerScale) return;
+        this.angle = centerScale;
+        requestLayout();
+    }
+
+    public void setMoveSpeed(float moveSpeed) {
+        assertNotInLayoutOrScroll(null);
+        if (this.moveSpeed == moveSpeed) return;
+        this.moveSpeed = moveSpeed;
+    }
+
+    public void setReverseRotate(boolean reverseRotate) {
+        assertNotInLayoutOrScroll(null);
+        if (this.reverseRotate == reverseRotate) return;
+        this.reverseRotate = reverseRotate;
+        requestLayout();
+    }
+
+    @Override
+    protected float setInterval() {
+        return mDecoratedMeasurement + itemSpace;
+    }
+
+    @Override
+    protected void setItemViewProperty(View itemView, float targetOffset) {
+        itemView.setRotation(calRotation(targetOffset));
+    }
+
+    @Override
+    protected float getDistanceRatio() {
+        if (moveSpeed == 0) return Float.MAX_VALUE;
+        return 1 / moveSpeed;
+    }
+
+    private float calRotation(float targetOffset) {
+        final float realAngle = reverseRotate ? angle : -angle;
+        return realAngle / mInterval * targetOffset;
+    }
+
+    public static class Builder {
+        private static float INTERVAL_ANGLE = 360f;
+        private static final float DEFAULT_SPEED = 1f;
+
+        private int itemSpace;
+        private int orientation;
+        private float angle;
+        private float moveSpeed;
+        private boolean reverseRotate;
+        private boolean reverseLayout;
+        private Context context;
+        private int maxVisibleItemCount;
+        private int distanceToBottom;
+
+        public Builder(Context context, int itemSpace) {
+            this.context = context;
+            this.itemSpace = itemSpace;
+            orientation = HORIZONTAL;
+            angle = INTERVAL_ANGLE;
+            this.moveSpeed = DEFAULT_SPEED;
+            reverseRotate = false;
+            reverseLayout = false;
+            distanceToBottom = ViewPagerLayoutManager.INVALID_SIZE;
+            maxVisibleItemCount = ViewPagerLayoutManager.DETERMINE_BY_MAX_AND_MIN;
+        }
+
+        public Builder setOrientation(int orientation) {
+            this.orientation = orientation;
+            return this;
+        }
+
+        public Builder setAngle(float angle) {
+            this.angle = angle;
+            return this;
+        }
+
+        public Builder setReverseLayout(boolean reverseLayout) {
+            this.reverseLayout = reverseLayout;
+            return this;
+        }
+
+        public Builder setMoveSpeed(float moveSpeed) {
+            this.moveSpeed = moveSpeed;
+            return this;
+        }
+
+        public Builder setReverseRotate(boolean reverseRotate) {
+            this.reverseRotate = reverseRotate;
+            return this;
+        }
+
+        public Builder setMaxVisibleItemCount(int maxVisibleItemCount) {
+            this.maxVisibleItemCount = maxVisibleItemCount;
+            return this;
+        }
+
+        public Builder setDistanceToBottom(int distanceToBottom) {
+            this.distanceToBottom = distanceToBottom;
+            return this;
+        }
+
+        public RotateLayoutManager build() {
+            return new RotateLayoutManager(this);
+        }
+    }
+}

commonLib/src/main/java/com/common/commonlib/view/viewpagerlayoutmanager/ScaleLayoutManager.java

@@ -0,0 +1,221 @@
+package com.common.commonlib.view.viewpagerlayoutmanager;
+
+import android.content.Context;
+import android.view.View;
+
+/**
+ * An implementation of {@link ViewPagerLayoutManager}
+ * which zooms the center item
+ */
+
+@SuppressWarnings({"WeakerAccess", "unused"})
+public class ScaleLayoutManager extends ViewPagerLayoutManager {
+
+    private int itemSpace;
+    private float minScale;
+    private float moveSpeed;
+    private float maxAlpha;
+    private float minAlpha;
+
+    public ScaleLayoutManager(Context context, int itemSpace) {
+        this(new Builder(context, itemSpace));
+    }
+
+    public ScaleLayoutManager(Context context, int itemSpace, int orientation) {
+        this(new Builder(context, itemSpace).setOrientation(orientation));
+    }
+
+    public ScaleLayoutManager(Context context, int itemSpace, int orientation, boolean reverseLayout) {
+        this(new Builder(context, itemSpace).setOrientation(orientation).setReverseLayout(reverseLayout));
+    }
+
+    public ScaleLayoutManager(Builder builder) {
+        this(builder.context, builder.itemSpace, builder.minScale, builder.maxAlpha, builder.minAlpha,
+                builder.orientation, builder.moveSpeed, builder.maxVisibleItemCount, builder.distanceToBottom,
+                builder.reverseLayout);
+    }
+
+    private ScaleLayoutManager(Context context, int itemSpace, float minScale, float maxAlpha, float minAlpha,
+                               int orientation, float moveSpeed, int maxVisibleItemCount, int distanceToBottom,
+                               boolean reverseLayout) {
+        super(context, orientation, reverseLayout);
+        setDistanceToBottom(distanceToBottom);
+        setMaxVisibleItemCount(maxVisibleItemCount);
+        this.itemSpace = itemSpace;
+        this.minScale = minScale;
+        this.moveSpeed = moveSpeed;
+        this.maxAlpha = maxAlpha;
+        this.minAlpha = minAlpha;
+    }
+
+    public int getItemSpace() {
+        return itemSpace;
+    }
+
+    public float getMinScale() {
+        return minScale;
+    }
+
+    public float getMoveSpeed() {
+        return moveSpeed;
+    }
+
+    public float getMaxAlpha() {
+        return maxAlpha;
+    }
+
+    public float getMinAlpha() {
+        return minAlpha;
+    }
+
+    public void setItemSpace(int itemSpace) {
+        assertNotInLayoutOrScroll(null);
+        if (this.itemSpace == itemSpace) return;
+        this.itemSpace = itemSpace;
+        removeAllViews();
+    }
+
+    public void setMinScale(float minScale) {
+        assertNotInLayoutOrScroll(null);
+        if (this.minScale == minScale) return;
+        this.minScale = minScale;
+        removeAllViews();
+    }
+
+    public void setMaxAlpha(float maxAlpha) {
+        assertNotInLayoutOrScroll(null);
+        if (maxAlpha > 1) maxAlpha = 1;
+        if (this.maxAlpha == maxAlpha) return;
+        this.maxAlpha = maxAlpha;
+        requestLayout();
+    }
+
+    public void setMinAlpha(float minAlpha) {
+        assertNotInLayoutOrScroll(null);
+        if (minAlpha < 0) minAlpha = 0;
+        if (this.minAlpha == minAlpha) return;
+        this.minAlpha = minAlpha;
+        requestLayout();
+    }
+
+    public void setMoveSpeed(float moveSpeed) {
+        assertNotInLayoutOrScroll(null);
+        if (this.moveSpeed == moveSpeed) return;
+        this.moveSpeed = moveSpeed;
+    }
+
+    @Override
+    protected float setInterval() {
+        return itemSpace + mDecoratedMeasurement;
+    }
+
+    @Override
+    protected void setItemViewProperty(View itemView, float targetOffset) {
+        float scale = calculateScale(targetOffset + mSpaceMain);
+        itemView.setScaleX(scale);
+        itemView.setScaleY(scale);
+        final float alpha = calAlpha(targetOffset);
+        itemView.setAlpha(alpha);
+    }
+
+    private float calAlpha(float targetOffset) {
+        final float offset = Math.abs(targetOffset);
+        float alpha = (minAlpha - maxAlpha) / mInterval * offset + maxAlpha;
+        if (offset >= mInterval) alpha = minAlpha;
+        return alpha;
+    }
+
+    @Override
+    protected float getDistanceRatio() {
+        if (moveSpeed == 0) return Float.MAX_VALUE;
+        return 1 / moveSpeed;
+    }
+
+    /**
+     * @param x start positon of the view you want scale
+     * @return the scale rate of current scroll mOffset
+     */
+    private float calculateScale(float x) {
+        float deltaX = Math.abs(x - mSpaceMain);
+        if (deltaX - mDecoratedMeasurement > 0) deltaX = mDecoratedMeasurement;
+        return 1f - deltaX / mDecoratedMeasurement * (1f - minScale);
+    }
+
+    public static class Builder {
+        private static final float SCALE_RATE = 0.8f;
+        private static final float DEFAULT_SPEED = 1f;
+        private static float MIN_ALPHA = 1f;
+        private static float MAX_ALPHA = 1f;
+
+        private int itemSpace;
+        private int orientation;
+        private float minScale;
+        private float moveSpeed;
+        private float maxAlpha;
+        private float minAlpha;
+        private boolean reverseLayout;
+        private Context context;
+        private int maxVisibleItemCount;
+        private int distanceToBottom;
+
+        public Builder(Context context, int itemSpace) {
+            this.itemSpace = itemSpace;
+            this.context = context;
+            orientation = HORIZONTAL;
+            minScale = SCALE_RATE;
+            this.moveSpeed = DEFAULT_SPEED;
+            maxAlpha = MAX_ALPHA;
+            minAlpha = MIN_ALPHA;
+            reverseLayout = false;
+            distanceToBottom = ViewPagerLayoutManager.INVALID_SIZE;
+            maxVisibleItemCount = ViewPagerLayoutManager.DETERMINE_BY_MAX_AND_MIN;
+        }
+
+        public Builder setOrientation(int orientation) {
+            this.orientation = orientation;
+            return this;
+        }
+
+        public Builder setMinScale(float minScale) {
+            this.minScale = minScale;
+            return this;
+        }
+
+        public Builder setReverseLayout(boolean reverseLayout) {
+            this.reverseLayout = reverseLayout;
+            return this;
+        }
+
+        public Builder setMaxAlpha(float maxAlpha) {
+            if (maxAlpha > 1) maxAlpha = 1;
+            this.maxAlpha = maxAlpha;
+            return this;
+        }
+
+        public Builder setMinAlpha(float minAlpha) {
+            if (minAlpha < 0) minAlpha = 0;
+            this.minAlpha = minAlpha;
+            return this;
+        }
+
+        public Builder setMoveSpeed(float moveSpeed) {
+            this.moveSpeed = moveSpeed;
+            return this;
+        }
+
+        public Builder setMaxVisibleItemCount(int maxVisibleItemCount) {
+            this.maxVisibleItemCount = maxVisibleItemCount;
+            return this;
+        }
+
+        public Builder setDistanceToBottom(int distanceToBottom) {
+            this.distanceToBottom = distanceToBottom;
+            return this;
+        }
+
+        public ScaleLayoutManager build() {
+            return new ScaleLayoutManager(this);
+        }
+    }
+}
+

commonLib/src/main/java/com/common/commonlib/view/viewpagerlayoutmanager/ScrollHelper.java

@@ -0,0 +1,24 @@
+package com.common.commonlib.view.viewpagerlayoutmanager;
+
+import android.view.View;
+
+import androidx.recyclerview.widget.RecyclerView;
+
+public class ScrollHelper {
+    /* package */
+    static void smoothScrollToPosition(RecyclerView recyclerView, ViewPagerLayoutManager viewPagerLayoutManager, int targetPosition) {
+        final int delta = viewPagerLayoutManager.getOffsetToPosition(targetPosition);
+        if (viewPagerLayoutManager.getOrientation() == RecyclerView.VERTICAL) {
+            recyclerView.smoothScrollBy(0, delta);
+        } else {
+            recyclerView.smoothScrollBy(delta, 0);
+        }
+    }
+
+    public static void smoothScrollToTargetView(RecyclerView recyclerView, View targetView) {
+        final RecyclerView.LayoutManager layoutManager = recyclerView.getLayoutManager();
+        if (!(layoutManager instanceof ViewPagerLayoutManager)) return;
+        final int targetPosition = ((ViewPagerLayoutManager) layoutManager).getLayoutPositionOfView(targetView);
+        smoothScrollToPosition(recyclerView, (ViewPagerLayoutManager) layoutManager, targetPosition);
+    }
+}

commonLib/src/main/java/com/common/commonlib/view/viewpagerlayoutmanager/ViewPagerLayoutManager.java

@@ -0,0 +1,936 @@
+package com.common.commonlib.view.viewpagerlayoutmanager;
+
+import static androidx.recyclerview.widget.RecyclerView.NO_POSITION;
+
+import android.content.Context;
+import android.os.Parcel;
+import android.os.Parcelable;
+import android.util.SparseArray;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.animation.Interpolator;
+
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+import java.util.ArrayList;
+
+@SuppressWarnings({"WeakerAccess", "unused", "SameParameterValue"})
+public abstract class ViewPagerLayoutManager extends LinearLayoutManager {
+
+    public static final int DETERMINE_BY_MAX_AND_MIN = -1;
+
+    public static final int HORIZONTAL = OrientationHelper.HORIZONTAL;
+
+    public static final int VERTICAL = OrientationHelper.VERTICAL;
+    protected static final int INVALID_SIZE = Integer.MAX_VALUE;
+    private static final int DIRECTION_NO_WHERE = -1;
+    private static final int DIRECTION_FORWARD = 0;
+    private static final int DIRECTION_BACKWARD = 1;
+    protected int mDecoratedMeasurement;
+    protected int mDecoratedMeasurementInOther;
+    protected int mSpaceMain;
+    protected int mSpaceInOther;
+    /**
+     * The offset of property which will change while scrolling
+     */
+    protected float mOffset;
+    /**
+     * Many calculations are made depending on orientation. To keep it clean, this interface
+     * helps {@link LinearLayoutManager} make those decisions.
+     * Based on {@link #mOrientation}, an implementation is lazily created in
+     * method.
+     */
+    protected OrientationHelper mOrientationHelper;
+    protected float mInterval; //the mInterval of each item's mOffset
+    /**
+     * Current orientation. Either {@link #HORIZONTAL} or {@link #VERTICAL}
+     */
+    int mOrientation;
+    /* package */ OnPageChangeListener onPageChangeListener;
+    private SparseArray<View> positionCache = new SparseArray<>();
+    /**
+     * Defines if layout should be calculated from end to start.
+     */
+    private boolean mReverseLayout = false;
+    /**
+     * This keeps the final value for how LayoutManager should start laying out views.
+     * It is calculated by checking {@link #getReverseLayout()} and View's layout direction.
+     * {@link #onLayoutChildren(RecyclerView.Recycler, RecyclerView.State)} is run.
+     */
+    private boolean mShouldReverseLayout = false;
+    /**
+     * Works the same way as {@link android.widget.AbsListView#setSmoothScrollbarEnabled(boolean)}.
+     * see {@link android.widget.AbsListView#setSmoothScrollbarEnabled(boolean)}
+     */
+    private boolean mSmoothScrollbarEnabled = true;
+    /**
+     * When LayoutManager needs to scroll to a position, it sets this variable and requests a
+     * layout which will check this variable and re-layout accordingly.
+     */
+    private int mPendingScrollPosition = NO_POSITION;
+    private SavedState mPendingSavedState = null;
+    private boolean mRecycleChildrenOnDetach;
+
+    private boolean mInfinite = false;
+
+    private boolean mEnableBringCenterToFront;
+
+    private int mLeftItems;
+
+    private int mRightItems;
+
+    /**
+     * max visible item count
+     */
+    private int mMaxVisibleItemCount = DETERMINE_BY_MAX_AND_MIN;
+
+    private Interpolator mSmoothScrollInterpolator;
+
+    private int mDistanceToBottom = INVALID_SIZE;
+
+    /**
+     * use for handle focus
+     */
+    private View currentFocusView;
+
+    /**
+     * Creates a horizontal ViewPagerLayoutManager
+     */
+    public ViewPagerLayoutManager(Context context) {
+        this(context, HORIZONTAL, false);
+    }
+
+    /**
+     * @param orientation   Layout orientation. Should be {@link #HORIZONTAL} or {@link #VERTICAL}
+     * @param reverseLayout When set to true, layouts from end to start
+     */
+    public ViewPagerLayoutManager(Context context, int orientation, boolean reverseLayout) {
+        super(context);
+        setOrientation(orientation);
+        setReverseLayout(reverseLayout);
+        setAutoMeasureEnabled(true);
+        setItemPrefetchEnabled(false);
+    }
+
+    /**
+     * @return the mInterval of each item's mOffset
+     */
+    protected abstract float setInterval();
+
+    protected abstract void setItemViewProperty(View itemView, float targetOffset);
+
+    /**
+     * cause elevation is not support below api 21,
+     * so you can set your elevation here for supporting it below api 21
+     * or you can just setElevation in {@link #setItemViewProperty(View, float)}
+     */
+    protected float setViewElevation(View itemView, float targetOffset) {
+        return 0;
+    }
+
+    @Override
+    public RecyclerView.LayoutParams generateDefaultLayoutParams() {
+        return new RecyclerView.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
+                ViewGroup.LayoutParams.WRAP_CONTENT);
+    }
+
+    /**
+     * Returns whether LayoutManager will recycle its children when it is detached from
+     * RecyclerView.
+     *
+     * @return true if LayoutManager will recycle its children when it is detached from
+     * RecyclerView.
+     */
+    public boolean getRecycleChildrenOnDetach() {
+        return mRecycleChildrenOnDetach;
+    }
+
+    /**
+     * Set whether LayoutManager will recycle its children when it is detached from
+     * RecyclerView.
+     * <p>
+     * If you are using a {@link RecyclerView.RecycledViewPool}, it might be a good idea to set
+     * this flag to <code>true</code> so that views will be available to other RecyclerViews
+     * immediately.
+     * <p>
+     * Note that, setting this flag will result in a performance drop if RecyclerView
+     * is restored.
+     *
+     * @param recycleChildrenOnDetach Whether children should be recycled in detach or not.
+     */
+    public void setRecycleChildrenOnDetach(boolean recycleChildrenOnDetach) {
+        mRecycleChildrenOnDetach = recycleChildrenOnDetach;
+    }
+
+    @Override
+    public void onDetachedFromWindow(RecyclerView view, RecyclerView.Recycler recycler) {
+        super.onDetachedFromWindow(view, recycler);
+        if (mRecycleChildrenOnDetach) {
+            removeAndRecycleAllViews(recycler);
+            recycler.clear();
+        }
+    }
+
+    @Override
+    public Parcelable onSaveInstanceState() {
+        if (mPendingSavedState != null) {
+            return new SavedState(mPendingSavedState);
+        }
+        SavedState savedState = new SavedState();
+        savedState.position = mPendingScrollPosition;
+        savedState.offset = mOffset;
+        savedState.isReverseLayout = mShouldReverseLayout;
+        return savedState;
+    }
+
+    @Override
+    public void onRestoreInstanceState(Parcelable state) {
+        if (state instanceof SavedState) {
+            mPendingSavedState = new SavedState((SavedState) state);
+            requestLayout();
+        }
+    }
+
+    /**
+     * @return true if {@link #getOrientation()} is {@link #HORIZONTAL}
+     */
+    @Override
+    public boolean canScrollHorizontally() {
+        return mOrientation == HORIZONTAL;
+    }
+
+    /**
+     * @return true if {@link #getOrientation()} is {@link #VERTICAL}
+     */
+    @Override
+    public boolean canScrollVertically() {
+        return mOrientation == VERTICAL;
+    }
+
+    /**
+     * Returns the current orientation of the layout.
+     *
+     * @return Current orientation,  either {@link #HORIZONTAL} or {@link #VERTICAL}
+     * @see #setOrientation(int)
+     */
+    public int getOrientation() {
+        return mOrientation;
+    }
+
+    /**
+     * Sets the orientation of the layout. {@link ViewPagerLayoutManager}
+     * will do its best to keep scroll position.
+     *
+     * @param orientation {@link #HORIZONTAL} or {@link #VERTICAL}
+     */
+    public void setOrientation(int orientation) {
+        if (orientation != HORIZONTAL && orientation != VERTICAL) {
+            throw new IllegalArgumentException("invalid orientation:" + orientation);
+        }
+        assertNotInLayoutOrScroll(null);
+        if (orientation == mOrientation) {
+            return;
+        }
+        mOrientation = orientation;
+        mOrientationHelper = null;
+        mDistanceToBottom = INVALID_SIZE;
+        removeAllViews();
+    }
+
+    /**
+     * Returns the max visible item count, {@link #DETERMINE_BY_MAX_AND_MIN} means it haven't been set now
+     * And it will use {@link #maxRemoveOffset()} and {@link #minRemoveOffset()} to handle the range
+     *
+     * @return Max visible item count
+     */
+    public int getMaxVisibleItemCount() {
+        return mMaxVisibleItemCount;
+    }
+
+    /**
+     * Set the max visible item count, {@link #DETERMINE_BY_MAX_AND_MIN} means it haven't been set now
+     * And it will use {@link #maxRemoveOffset()} and {@link #minRemoveOffset()} to handle the range
+     *
+     * @param mMaxVisibleItemCount Max visible item count
+     */
+    public void setMaxVisibleItemCount(int mMaxVisibleItemCount) {
+        assertNotInLayoutOrScroll(null);
+        if (this.mMaxVisibleItemCount == mMaxVisibleItemCount) return;
+        this.mMaxVisibleItemCount = mMaxVisibleItemCount;
+        removeAllViews();
+    }
+
+    /**
+     * Calculates the view layout order. (e.g. from end to start or start to end)
+     * RTL layout support is applied automatically. So if layout is RTL and
+     * {@link #getReverseLayout()} is {@code true}, elements will be laid out starting from left.
+     */
+    private void resolveShouldLayoutReverse() {
+        // A == B is the same result, but we rather keep it readable
+        if (mOrientation == VERTICAL || !isLayoutRTL()) {
+            mShouldReverseLayout = mReverseLayout;
+        } else {
+            mShouldReverseLayout = !mReverseLayout;
+        }
+    }
+
+    /**
+     * Returns if views are laid out from the opposite direction of the layout.
+     *
+     * @return If layout is reversed or not.
+     * @see #setReverseLayout(boolean)
+     */
+    public boolean getReverseLayout() {
+        return mReverseLayout;
+    }
+
+    public void setReverseLayout(boolean reverseLayout) {
+        assertNotInLayoutOrScroll(null);
+        if (reverseLayout == mReverseLayout) {
+            return;
+        }
+        mReverseLayout = reverseLayout;
+        removeAllViews();
+    }
+
+    public void setSmoothScrollInterpolator(Interpolator smoothScrollInterpolator) {
+        this.mSmoothScrollInterpolator = smoothScrollInterpolator;
+    }
+
+    @Override
+    public void smoothScrollToPosition(RecyclerView recyclerView, RecyclerView.State state, int position) {
+        final int offsetPosition;
+
+        // fix wrong scroll direction when infinite enable
+        if (mInfinite) {
+            final int currentPosition = getCurrentPosition();
+            final int total = getItemCount();
+            final int targetPosition;
+            if (position < currentPosition) {
+                int d1 = currentPosition - position;
+                int d2 = total - currentPosition + position;
+                targetPosition = d1 < d2 ? (currentPosition - d1) : (currentPosition + d2);
+            } else {
+                int d1 = position - currentPosition;
+                int d2 = currentPosition + total - position;
+                targetPosition = d1 < d2 ? (currentPosition + d1) : (currentPosition - d2);
+            }
+
+            offsetPosition = getOffsetToPosition(targetPosition);
+        } else {
+            offsetPosition = getOffsetToPosition(position);
+        }
+
+        if (mOrientation == VERTICAL) {
+            recyclerView.smoothScrollBy(0, offsetPosition, mSmoothScrollInterpolator);
+        } else {
+            recyclerView.smoothScrollBy(offsetPosition, 0, mSmoothScrollInterpolator);
+        }
+    }
+
+    @Override
+    public void onLayoutChildren(RecyclerView.Recycler recycler, RecyclerView.State state) {
+        if (state.getItemCount() == 0) {
+            removeAndRecycleAllViews(recycler);
+            mOffset = 0;
+            return;
+        }
+
+        ensureLayoutState();
+        resolveShouldLayoutReverse();
+
+        //make sure properties are correct while measure more than once
+        View scrap = getMeasureView(recycler, state, 0);
+        if (scrap == null) {
+            removeAndRecycleAllViews(recycler);
+            mOffset = 0;
+            return;
+        }
+
+        measureChildWithMargins(scrap, 0, 0);
+        mDecoratedMeasurement = mOrientationHelper.getDecoratedMeasurement(scrap);
+        mDecoratedMeasurementInOther = mOrientationHelper.getDecoratedMeasurementInOther(scrap);
+        mSpaceMain = (mOrientationHelper.getTotalSpace() - mDecoratedMeasurement) / 2;
+        if (mDistanceToBottom == INVALID_SIZE) {
+            mSpaceInOther = (mOrientationHelper.getTotalSpaceInOther() - mDecoratedMeasurementInOther) / 2;
+        } else {
+            mSpaceInOther = mOrientationHelper.getTotalSpaceInOther() - mDecoratedMeasurementInOther - mDistanceToBottom;
+        }
+
+        mInterval = setInterval();
+        setUp();
+        if (mInterval == 0) {
+            mLeftItems = 1;
+            mRightItems = 1;
+        } else {
+            mLeftItems = (int) Math.abs(minRemoveOffset() / mInterval) + 1;
+            mRightItems = (int) Math.abs(maxRemoveOffset() / mInterval) + 1;
+        }
+
+        if (mPendingSavedState != null) {
+            mShouldReverseLayout = mPendingSavedState.isReverseLayout;
+            mPendingScrollPosition = mPendingSavedState.position;
+            mOffset = mPendingSavedState.offset;
+        }
+
+        if (mPendingScrollPosition != NO_POSITION) {
+            mOffset = mShouldReverseLayout ?
+                    mPendingScrollPosition * -mInterval : mPendingScrollPosition * mInterval;
+        }
+
+        layoutItems(recycler);
+    }
+
+    private View getMeasureView(RecyclerView.Recycler recycler, RecyclerView.State state, int index) {
+        if (index >= state.getItemCount() || index < 0) return null;
+        try {
+            return recycler.getViewForPosition(index);
+        } catch (Exception e) {
+            return getMeasureView(recycler, state, index + 1);
+        }
+    }
+
+    @Override
+    public void onLayoutCompleted(RecyclerView.State state) {
+        super.onLayoutCompleted(state);
+        mPendingSavedState = null;
+        mPendingScrollPosition = NO_POSITION;
+    }
+
+    @Override
+    public boolean onAddFocusables(RecyclerView recyclerView, ArrayList<View> views, int direction, int focusableMode) {
+        final int currentPosition = getCurrentPosition();
+        final View currentView = findViewByPosition(currentPosition);
+        if (currentView == null) return true;
+        if (recyclerView.hasFocus()) {
+            final int movement = getMovement(direction);
+            if (movement != DIRECTION_NO_WHERE) {
+                final int targetPosition = movement == DIRECTION_BACKWARD ?
+                        currentPosition - 1 : currentPosition + 1;
+                ScrollHelper.smoothScrollToPosition(recyclerView, this, targetPosition);
+            }
+        } else {
+            currentView.addFocusables(views, direction, focusableMode);
+        }
+        return true;
+    }
+
+    @Override
+    public View onFocusSearchFailed(View focused, int focusDirection, RecyclerView.Recycler recycler, RecyclerView.State state) {
+        return null;
+    }
+
+    private int getMovement(int direction) {
+        if (mOrientation == VERTICAL) {
+            if (direction == View.FOCUS_UP) {
+                return mShouldReverseLayout ? DIRECTION_FORWARD : DIRECTION_BACKWARD;
+            } else if (direction == View.FOCUS_DOWN) {
+                return mShouldReverseLayout ? DIRECTION_BACKWARD : DIRECTION_FORWARD;
+            } else {
+                return DIRECTION_NO_WHERE;
+            }
+        } else {
+            if (direction == View.FOCUS_LEFT) {
+                return mShouldReverseLayout ? DIRECTION_FORWARD : DIRECTION_BACKWARD;
+            } else if (direction == View.FOCUS_RIGHT) {
+                return mShouldReverseLayout ? DIRECTION_BACKWARD : DIRECTION_FORWARD;
+            } else {
+                return DIRECTION_NO_WHERE;
+            }
+        }
+    }
+
+    void ensureLayoutState() {
+        if (mOrientationHelper == null) {
+            mOrientationHelper = OrientationHelper.createOrientationHelper(this, mOrientation);
+        }
+    }
+
+    /**
+     * You can set up your own properties here or change the exist properties like mSpaceMain and mSpaceInOther
+     */
+    protected void setUp() {
+
+    }
+
+    private float getProperty(int position) {
+        return mShouldReverseLayout ? position * -mInterval : position * mInterval;
+    }
+
+    @Override
+    public void onAdapterChanged(RecyclerView.Adapter oldAdapter, RecyclerView.Adapter newAdapter) {
+        removeAllViews();
+        mOffset = 0;
+    }
+
+    @Override
+    public void scrollToPosition(int position) {
+        if (!mInfinite && (position < 0 || position >= getItemCount())) return;
+        mPendingScrollPosition = position;
+        mOffset = mShouldReverseLayout ? position * -mInterval : position * mInterval;
+        requestLayout();
+    }
+
+    @Override
+    public int computeHorizontalScrollOffset(RecyclerView.State state) {
+        return computeScrollOffset();
+    }
+
+    @Override
+    public int computeVerticalScrollOffset(RecyclerView.State state) {
+        return computeScrollOffset();
+    }
+
+    @Override
+    public int computeHorizontalScrollExtent(RecyclerView.State state) {
+        return computeScrollExtent();
+    }
+
+    @Override
+    public int computeVerticalScrollExtent(RecyclerView.State state) {
+        return computeScrollExtent();
+    }
+
+    @Override
+    public int computeHorizontalScrollRange(RecyclerView.State state) {
+        return computeScrollRange();
+    }
+
+    @Override
+    public int computeVerticalScrollRange(RecyclerView.State state) {
+        return computeScrollRange();
+    }
+
+    private int computeScrollOffset() {
+        if (getChildCount() == 0) {
+            return 0;
+        }
+
+        if (!mSmoothScrollbarEnabled) {
+            return !mShouldReverseLayout ?
+                    getCurrentPosition() : getItemCount() - getCurrentPosition() - 1;
+        }
+
+        final float realOffset = getOffsetOfRightAdapterPosition();
+        return !mShouldReverseLayout ? (int) realOffset : (int) ((getItemCount() - 1) * mInterval + realOffset);
+    }
+
+    private int computeScrollExtent() {
+        if (getChildCount() == 0) {
+            return 0;
+        }
+
+        if (!mSmoothScrollbarEnabled) {
+            return 1;
+        }
+
+        return (int) mInterval;
+    }
+
+    private int computeScrollRange() {
+        if (getChildCount() == 0) {
+            return 0;
+        }
+
+        if (!mSmoothScrollbarEnabled) {
+            return getItemCount();
+        }
+
+        return (int) (getItemCount() * mInterval);
+    }
+
+    @Override
+    public int scrollHorizontallyBy(int dx, RecyclerView.Recycler recycler, RecyclerView.State state) {
+        if (mOrientation == VERTICAL) {
+            return 0;
+        }
+        return scrollBy(dx, recycler, state);
+    }
+
+    @Override
+    public int scrollVerticallyBy(int dy, RecyclerView.Recycler recycler, RecyclerView.State state) {
+        if (mOrientation == HORIZONTAL) {
+            return 0;
+        }
+        return scrollBy(dy, recycler, state);
+    }
+
+    private int scrollBy(int dy, RecyclerView.Recycler recycler, RecyclerView.State state) {
+        if (getChildCount() == 0 || dy == 0) {
+            return 0;
+        }
+        ensureLayoutState();
+        int willScroll = dy;
+
+        float realDx = dy / getDistanceRatio();
+        if (Math.abs(realDx) < 0.00000001f) {
+            return 0;
+        }
+        float targetOffset = mOffset + realDx;
+
+        //handle the boundary
+        if (!mInfinite && targetOffset < getMinOffset()) {
+            willScroll -= (targetOffset - getMinOffset()) * getDistanceRatio();
+        } else if (!mInfinite && targetOffset > getMaxOffset()) {
+            willScroll = (int) ((getMaxOffset() - mOffset) * getDistanceRatio());
+        }
+
+        realDx = willScroll / getDistanceRatio();
+
+        mOffset += realDx;
+
+        //handle recycle
+        layoutItems(recycler);
+
+        return willScroll;
+    }
+
+    private void layoutItems(RecyclerView.Recycler recycler) {
+        detachAndScrapAttachedViews(recycler);
+        positionCache.clear();
+
+        final int itemCount = getItemCount();
+        if (itemCount == 0) return;
+
+        // make sure that current position start from 0 to 1
+        final int currentPos = mShouldReverseLayout ?
+                -getCurrentPositionOffset() : getCurrentPositionOffset();
+        int start = currentPos - mLeftItems;
+        int end = currentPos + mRightItems;
+
+        // handle max visible count
+        if (useMaxVisibleCount()) {
+            boolean isEven = mMaxVisibleItemCount % 2 == 0;
+            if (isEven) {
+                int offset = mMaxVisibleItemCount / 2;
+                start = currentPos - offset + 1;
+                end = currentPos + offset + 1;
+            } else {
+                int offset = (mMaxVisibleItemCount - 1) / 2;
+                start = currentPos - offset;
+                end = currentPos + offset + 1;
+            }
+        }
+
+        if (!mInfinite) {
+            if (start < 0) {
+                start = 0;
+                if (useMaxVisibleCount()) end = mMaxVisibleItemCount;
+            }
+            if (end > itemCount) end = itemCount;
+        }
+
+        float lastOrderWeight = Float.MIN_VALUE;
+        for (int i = start; i < end; i++) {
+            if (useMaxVisibleCount() || !removeCondition(getProperty(i) - mOffset)) {
+                // start and end base on current position,
+                // so we need to calculate the adapter position
+                int adapterPosition = i;
+                if (i >= itemCount) {
+                    adapterPosition %= itemCount;
+                } else if (i < 0) {
+                    int delta = (-adapterPosition) % itemCount;
+                    if (delta == 0) delta = itemCount;
+                    adapterPosition = itemCount - delta;
+                }
+                final View scrap = recycler.getViewForPosition(adapterPosition);
+                measureChildWithMargins(scrap, 0, 0);
+                resetViewProperty(scrap);
+                // we need i to calculate the real offset of current view
+                final float targetOffset = getProperty(i) - mOffset;
+                layoutScrap(scrap, targetOffset);
+                final float orderWeight = mEnableBringCenterToFront ?
+                        setViewElevation(scrap, targetOffset) : adapterPosition;
+                if (orderWeight > lastOrderWeight) {
+                    addView(scrap);
+                } else {
+                    addView(scrap, 0);
+                }
+                if (i == currentPos) currentFocusView = scrap;
+                lastOrderWeight = orderWeight;
+                positionCache.put(i, scrap);
+            }
+        }
+
+        currentFocusView.requestFocus();
+    }
+
+    private boolean useMaxVisibleCount() {
+        return mMaxVisibleItemCount != DETERMINE_BY_MAX_AND_MIN;
+    }
+
+    private boolean removeCondition(float targetOffset) {
+        return targetOffset > maxRemoveOffset() || targetOffset < minRemoveOffset();
+    }
+
+    private void resetViewProperty(View v) {
+        v.setRotation(0);
+        v.setRotationY(0);
+        v.setRotationX(0);
+        v.setScaleX(1f);
+        v.setScaleY(1f);
+        v.setAlpha(1f);
+    }
+
+    /* package */ float getMaxOffset() {
+        return !mShouldReverseLayout ? (getItemCount() - 1) * mInterval : 0;
+    }
+
+    /* package */ float getMinOffset() {
+        return !mShouldReverseLayout ? 0 : -(getItemCount() - 1) * mInterval;
+    }
+
+    private void layoutScrap(View scrap, float targetOffset) {
+        final int left = calItemLeft(scrap, targetOffset);
+        final int top = calItemTop(scrap, targetOffset);
+        if (mOrientation == VERTICAL) {
+            layoutDecorated(scrap, mSpaceInOther + left, mSpaceMain + top,
+                    mSpaceInOther + left + mDecoratedMeasurementInOther, mSpaceMain + top + mDecoratedMeasurement);
+        } else {
+            layoutDecorated(scrap, mSpaceMain + left, mSpaceInOther + top,
+                    mSpaceMain + left + mDecoratedMeasurement, mSpaceInOther + top + mDecoratedMeasurementInOther);
+        }
+        setItemViewProperty(scrap, targetOffset);
+    }
+
+    protected int calItemLeft(View itemView, float targetOffset) {
+        return mOrientation == VERTICAL ? 0 : (int) targetOffset;
+    }
+
+    protected int calItemTop(View itemView, float targetOffset) {
+        return mOrientation == VERTICAL ? (int) targetOffset : 0;
+    }
+
+    /**
+     * when the target offset reach this,
+     * the view will be removed and recycled in {@link #layoutItems(RecyclerView.Recycler)}
+     */
+    protected float maxRemoveOffset() {
+        return mOrientationHelper.getTotalSpace() - mSpaceMain;
+    }
+
+    /**
+     * when the target offset reach this,
+     * the view will be removed and recycled in {@link #layoutItems(RecyclerView.Recycler)}
+     */
+    protected float minRemoveOffset() {
+        return -mDecoratedMeasurement - mOrientationHelper.getStartAfterPadding() - mSpaceMain;
+    }
+
+    protected float getDistanceRatio() {
+        return 1f;
+    }
+
+    public int getCurrentPosition() {
+        if (getItemCount() == 0) return 0;
+
+        int position = getCurrentPositionOffset();
+        if (!mInfinite) return Math.abs(position);
+
+        position = !mShouldReverseLayout ?
+                //take care of position = getItemCount()
+                (position >= 0 ?
+                        position % getItemCount() :
+                        getItemCount() + position % getItemCount()) :
+                (position > 0 ?
+                        getItemCount() - position % getItemCount() :
+                        -position % getItemCount());
+        return position == getItemCount() ? 0 : position;
+    }
+
+    @Override
+    public View findViewByPosition(int position) {
+        final int itemCount = getItemCount();
+        if (itemCount == 0) return null;
+        for (int i = 0; i < positionCache.size(); i++) {
+            final int key = positionCache.keyAt(i);
+            if (key >= 0) {
+                if (position == key % itemCount) return positionCache.valueAt(i);
+            } else {
+                int delta = key % itemCount;
+                if (delta == 0) delta = -itemCount;
+                if (itemCount + delta == position) return positionCache.valueAt(i);
+            }
+        }
+        return null;
+    }
+
+    public int getLayoutPositionOfView(View v) {
+        for (int i = 0; i < positionCache.size(); i++) {
+            int key = positionCache.keyAt(i);
+            View value = positionCache.get(key);
+            if (value == v) return key;
+        }
+        return -1;
+    }
+
+    /* package */ int getCurrentPositionOffset() {
+        if (mInterval == 0) return 0;
+        return Math.round(mOffset / mInterval);
+    }
+
+    /**
+     * Sometimes we need to get the right offset of matching adapter position
+     * cause when {@link #mInfinite} is set true, there will be no limitation of {@link #mOffset}
+     */
+    private float getOffsetOfRightAdapterPosition() {
+        if (mShouldReverseLayout)
+            return mInfinite ?
+                    (mOffset <= 0 ?
+                            (mOffset % (mInterval * getItemCount())) :
+                            (getItemCount() * -mInterval + mOffset % (mInterval * getItemCount()))) :
+                    mOffset;
+        else
+            return mInfinite ?
+                    (mOffset >= 0 ?
+                            (mOffset % (mInterval * getItemCount())) :
+                            (getItemCount() * mInterval + mOffset % (mInterval * getItemCount()))) :
+                    mOffset;
+    }
+
+    /**
+     * used by {@link CenterSnapHelper} to center the current view
+     *
+     * @return the dy between center and current position
+     */
+    public int getOffsetToCenter() {
+        if (mInfinite)
+            return (int) ((getCurrentPositionOffset() * mInterval - mOffset) * getDistanceRatio());
+        return (int) ((getCurrentPosition() *
+                (!mShouldReverseLayout ? mInterval : -mInterval) - mOffset) * getDistanceRatio());
+    }
+
+    public int getOffsetToPosition(int position) {
+        if (mInfinite)
+            return (int) (((getCurrentPositionOffset() +
+                    (!mShouldReverseLayout ? position - getCurrentPositionOffset() : -getCurrentPositionOffset() - position)) *
+                    mInterval - mOffset) * getDistanceRatio());
+        return (int) ((position *
+                (!mShouldReverseLayout ? mInterval : -mInterval) - mOffset) * getDistanceRatio());
+    }
+
+    public void setOnPageChangeListener(OnPageChangeListener onPageChangeListener) {
+        this.onPageChangeListener = onPageChangeListener;
+    }
+
+    public boolean getInfinite() {
+        return mInfinite;
+    }
+
+    public void setInfinite(boolean enable) {
+        assertNotInLayoutOrScroll(null);
+        if (enable == mInfinite) {
+            return;
+        }
+        mInfinite = enable;
+        requestLayout();
+    }
+
+    public int getDistanceToBottom() {
+        return mDistanceToBottom == INVALID_SIZE ?
+                (mOrientationHelper.getTotalSpaceInOther() - mDecoratedMeasurementInOther) / 2 : mDistanceToBottom;
+    }
+
+    public void setDistanceToBottom(int mDistanceToBottom) {
+        assertNotInLayoutOrScroll(null);
+        if (this.mDistanceToBottom == mDistanceToBottom) return;
+        this.mDistanceToBottom = mDistanceToBottom;
+        removeAllViews();
+    }
+
+    public boolean getEnableBringCenterToFront() {
+        return mEnableBringCenterToFront;
+    }
+
+    public void setEnableBringCenterToFront(boolean bringCenterToTop) {
+        assertNotInLayoutOrScroll(null);
+        if (mEnableBringCenterToFront == bringCenterToTop) {
+            return;
+        }
+        this.mEnableBringCenterToFront = bringCenterToTop;
+        requestLayout();
+    }
+
+    /**
+     * Returns the current state of the smooth scrollbar feature. It is enabled by default.
+     *
+     * @return True if smooth scrollbar is enabled, false otherwise.
+     * @see #setSmoothScrollbarEnabled(boolean)
+     */
+    public boolean getSmoothScrollbarEnabled() {
+        return mSmoothScrollbarEnabled;
+    }
+
+    /**
+     * When smooth scrollbar is enabled, the position and size of the scrollbar thumb is computed
+     * based on the number of visible pixels in the visible items. This however assumes that all
+     * list items have similar or equal widths or heights (depending on list orientation).
+     * If you use a list in which items have different dimensions, the scrollbar will change
+     * appearance as the user scrolls through the list. To avoid this issue,  you need to disable
+     * this property.
+     * <p>
+     * When smooth scrollbar is disabled, the position and size of the scrollbar thumb is based
+     * solely on the number of items in the adapter and the position of the visible items inside
+     * the adapter. This provides a stable scrollbar as the user navigates through a list of items
+     * with varying widths / heights.
+     *
+     * @param enabled Whether or not to enable smooth scrollbar.
+     * @see #setSmoothScrollbarEnabled(boolean)
+     */
+    public void setSmoothScrollbarEnabled(boolean enabled) {
+        mSmoothScrollbarEnabled = enabled;
+    }
+
+    public interface OnPageChangeListener {
+        void onPageSelected(int position);
+
+        void onPageScrollStateChanged(int state);
+    }
+
+    private static class SavedState implements Parcelable {
+        public static final Creator<SavedState> CREATOR
+                = new Creator<SavedState>() {
+            @Override
+            public SavedState createFromParcel(Parcel in) {
+                return new SavedState(in);
+            }
+
+            @Override
+            public SavedState[] newArray(int size) {
+                return new SavedState[size];
+            }
+        };
+        int position;
+        float offset;
+        boolean isReverseLayout;
+
+        SavedState() {
+
+        }
+
+        SavedState(Parcel in) {
+            position = in.readInt();
+            offset = in.readFloat();
+            isReverseLayout = in.readInt() == 1;
+        }
+
+        public SavedState(SavedState other) {
+            position = other.position;
+            offset = other.offset;
+            isReverseLayout = other.isReverseLayout;
+        }
+
+        @Override
+        public int describeContents() {
+            return 0;
+        }
+
+        @Override
+        public void writeToParcel(Parcel dest, int flags) {
+            dest.writeInt(position);
+            dest.writeFloat(offset);
+            dest.writeInt(isReverseLayout ? 1 : 0);
+        }
+    }
+}

commonLib/src/main/res/values/attrs.xml

@@ -11,11 +11,18 @@
             <enum name="right" value="6" />
             <enum name="edit" value="7" />
         </attr>
-        <attr name="is_fixed_height" format="boolean"/>
-        <attr name="fixed_height" format="integer"/>
-        <attr name="drawableLeft" format="reference"/>
-        <attr name="drawableRight" format="reference"/>
-        <attr name="bgColor" format="reference|color"/>
+        <attr name="is_fixed_height" format="boolean" />
+        <attr name="fixed_height" format="integer" />
+        <attr name="drawableLeft" format="reference" />
+        <attr name="drawableRight" format="reference" />
+        <attr name="bgColor" format="reference|color" />
     </declare-styleable>
 
+    <declare-styleable name="AutoPlayRecyclerView">
+        <attr name="timeInterval" format="integer" />
+        <attr name="direction" format="enum">
+            <enum name="left" value="1" />
+            <enum name="right" value="2" />
+        </attr>
+    </declare-styleable>
 </resources>