diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 9305d16..d36741c 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -111,26 +111,6 @@
             android:screenOrientation="landscape"
             android:exported="false"
             android:theme="@style/FullscreenTheme" />
-
-        <activity
-            android:name=".MainActivity"
-            android:exported="false"
-            android:launchMode="singleInstance" />
-        <activity
-            android:name=".UVCActivity"
-            android:exported="false"
-            android:launchMode="singleInstance">
-            <intent-filter>
-                <action android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED" />
-            </intent-filter>
-            <intent-filter>
-                <action android:name="android.hardware.usb.action.USB_DEVICE_DETACHED" />
-            </intent-filter>
-
-            <meta-data
-                android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED"
-                android:resource="@xml/device_filter" />
-        </activity>
     </application>
 
 </manifest>
\ No newline at end of file
diff --git a/app/src/main/java/com/yinuo/safetywatcher/watcher/utils/Exts.kt b/app/src/main/java/com/yinuo/safetywatcher/watcher/utils/Exts.kt
index 64e45f6..14fc78c 100644
--- a/app/src/main/java/com/yinuo/safetywatcher/watcher/utils/Exts.kt
+++ b/app/src/main/java/com/yinuo/safetywatcher/watcher/utils/Exts.kt
@@ -1,6 +1,5 @@
 package com.yinuo.safetywatcher.watcher.utils
 
-import android.R
 import android.content.Context
 import android.graphics.drawable.StateListDrawable
 import android.view.View
@@ -12,7 +11,7 @@ fun Context.showToast(msg: String) {
     CommonToast(this).makeCommonText(this, msg, Toast.LENGTH_SHORT).show()
 }
 
-private val focusableStateKey: IntArray = intArrayOf(R.attr.state_focused)
+private val focusableStateKey: IntArray = intArrayOf(android.R.attr.state_focused)
 fun View?.trySetCommonBg() {
     this?.apply {
         val bg = StateListDrawable()
diff --git a/app/src/main/res/layout/activity_main_pro.xml b/app/src/main/res/layout/activity_main_pro.xml
index 8664892..c4ec8c9 100644
--- a/app/src/main/res/layout/activity_main_pro.xml
+++ b/app/src/main/res/layout/activity_main_pro.xml
@@ -40,7 +40,6 @@
             android:layout_margin="3dp"
             android:clickable="true"
             android:gravity="center"
-            android:onClick="onTakePictureThumbClicked"
             android:padding="3dp"
             android:scaleType="centerCrop"
             android:visibility="invisible" />