desc:监听sim卡是否可用及信号强度

app/src/main/AndroidManifest.xml

@@ -8,6 +8,7 @@
 
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
+    <uses-permission android:name="android.permission.READ_PHONE_STATE"/>
 
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
     <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

app/src/main/java/com/yinuo/safetywatcher/watcher/HomeActivity.kt

@@ -7,6 +7,7 @@ import androidx.annotation.RequiresApi
 import com.yinuo.safetywatcher.databinding.ActivityHomeBinding
 import com.yinuo.safetywatcher.watcher.base.BaseActivity
 import com.yinuo.safetywatcher.watcher.utils.BatteryHelper
+import com.yinuo.safetywatcher.watcher.utils.SimHelper
 import com.yinuo.safetywatcher.watcher.utils.WifiHelper
 
 class HomeActivity : BaseActivity() {
@@ -23,6 +24,7 @@ class HomeActivity : BaseActivity() {
     override fun initView() {
         BatteryHelper.init(this@HomeActivity)
         WifiHelper.init(this@HomeActivity)
+        SimHelper.init(this@HomeActivity)
         mBinding.apply {
             itemSetting.setOnClickListener {
                 startActivity(Intent(this@HomeActivity, SettingActivity::class.java))
@@ -38,5 +40,6 @@ class HomeActivity : BaseActivity() {
         super.onDestroy()
         BatteryHelper.release(this@HomeActivity)
         WifiHelper.release(this@HomeActivity)
+        SimHelper.release(this@HomeActivity)
     }
 }

app/src/main/java/com/yinuo/safetywatcher/watcher/utils/SimHelper.kt

@@ -0,0 +1,109 @@
+package com.yinuo.safetywatcher.watcher.utils
+
+import android.annotation.SuppressLint
+import android.app.Service
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import android.content.IntentFilter
+import android.telephony.PhoneStateListener
+import android.telephony.SignalStrength
+import android.telephony.SubscriptionInfo
+import android.telephony.SubscriptionManager
+import android.telephony.TelephonyManager
+import android.util.Log
+
+
+object SimHelper {
+    private var callbacks = mutableListOf<OnSimLevelCallback>()
+    private var mSimState = -1;
+    private var mRssi = -1;
+
+    private val receiver = object : BroadcastReceiver() {
+        override fun onReceive(context: Context?, intent: Intent?) {
+            if (intent?.action.equals("android.intent.action.SIM_STATE_CHANGED")) {
+                val tm = context!!.getSystemService(Service.TELEPHONY_SERVICE) as TelephonyManager
+                mSimState = tm.simState
+            }
+            Log.i(
+                this@SimHelper.javaClass.name,
+                "onReceive action = ${intent?.action}, mSimState = $mSimState, mRssi = $mRssi"
+            )
+            callbacks.forEach {
+                it.onLevel(
+                    mSimState == TelephonyManager.SIM_STATE_READY, mRssi
+                )
+            }
+        }
+    }
+
+    fun init(context: Context) {
+        watchSimState(context)
+        watchSimRssi(context)
+    }
+
+    private fun watchSimRssi(context: Context) {
+        val tm = context.getSystemService(Context.TELEPHONY_SERVICE) as TelephonyManager
+        //获取指定卡槽的信号强度
+        val info = getNewerSlotSubscriptionInfo(context, 0)
+        info?.let {
+            val mTelephonyManagerForSubscriptionId =
+                tm.createForSubscriptionId(info!!.subscriptionId)
+            mTelephonyManagerForSubscriptionId.listen(object : PhoneStateListener() {
+                override fun onSignalStrengthsChanged(signalStrength: SignalStrength) {
+                    super.onSignalStrengthsChanged(signalStrength)
+                    mRssi = signalStrength.level
+                    callbacks.forEach {
+                        it.onLevel(
+                            mSimState == TelephonyManager.SIM_STATE_READY, mRssi
+                        )
+                    }
+                }
+            }, PhoneStateListener.LISTEN_SIGNAL_STRENGTHS)
+        }
+    }
+
+    private fun watchSimState(context: Context) {
+        val filter = IntentFilter("android.intent.action.SIM_STATE_CHANGED")
+        context.registerReceiver(receiver, filter)
+    }
+
+    fun addCallBack(callBack: OnSimLevelCallback) {
+        callbacks.add(callBack)
+        if (mSimState != -1) {
+            callBack.onLevel(mSimState == TelephonyManager.SIM_STATE_READY, mRssi)
+        }
+    }
+
+    fun removeCallback(callBack: OnSimLevelCallback) {
+        callbacks.remove(callBack)
+    }
+
+    fun release(context: Context) {
+        callbacks.clear()
+        context.unregisterReceiver(receiver)
+    }
+
+    interface OnSimLevelCallback {
+        fun onLevel(enable: Boolean, level: Int)
+    }
+
+
+    @SuppressLint("MissingPermission")
+    @Synchronized
+    fun getNewerSlotSubscriptionInfo(context: Context, slot: Int): SubscriptionInfo? {
+        val list = SubscriptionManager.from(context).activeSubscriptionInfoList
+        if (list != null) {
+            for (info in list) {
+                if (slot == info.simSlotIndex) {
+                    Log.i(
+                        this@SimHelper.javaClass.name,
+                        "SlotIndex : " + info.simSlotIndex + " displayName : " + info.displayName
+                    )
+                    return info
+                }
+            }
+        }
+        return null
+    }
+}

app/src/main/java/com/yinuo/safetywatcher/watcher/view/CommonTopBar.kt

@@ -9,6 +9,7 @@ import android.widget.LinearLayout
 import com.yinuo.safetywatcher.R
 import com.yinuo.safetywatcher.databinding.LayoutTopbarBinding
 import com.yinuo.safetywatcher.watcher.utils.BatteryHelper
+import com.yinuo.safetywatcher.watcher.utils.SimHelper
 import com.yinuo.safetywatcher.watcher.utils.WifiHelper
 
 class CommonTopBar : LinearLayout {
@@ -39,6 +40,7 @@ class CommonTopBar : LinearLayout {
             // watch battery
             watchBattery()
             watchWifi()
+            watchSim()
         }
     }
 
@@ -71,6 +73,25 @@ class CommonTopBar : LinearLayout {
         WifiHelper.addCallBack(wifiCallback)
     }
 
+
+    private val simCallback = object : SimHelper.OnSimLevelCallback {
+        override fun onLevel(enable: Boolean, level: Int) {
+            Log.i(
+                this@CommonTopBar.javaClass.name,
+                "simCallback onEnable = $enable , level = $level"
+            )
+            if (enable) {
+                mBinding?.fourG?.visibility = VISIBLE
+            } else {
+                mBinding?.fourG?.visibility = GONE
+            }
+        }
+    }
+
+    private fun watchSim() {
+        SimHelper.addCallBack(simCallback)
+    }
+
     open fun setTitle(title: String) {
         mBinding?.backArea?.visibility = VISIBLE
         mBinding?.title?.text = title
@@ -80,5 +101,6 @@ class CommonTopBar : LinearLayout {
         super.onDetachedFromWindow()
         BatteryHelper.removeCallback(batteryCallback)
         WifiHelper.removeCallback(wifiCallback)
+        SimHelper.removeCallback(simCallback)
     }
 }

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

@@ -62,7 +62,10 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginStart="@dimen/_40dp"
-        android:layout_marginEnd="@dimen/_36dp"
         android:src="@mipmap/ic_setting"/>
 
+    <Space
+        android:layout_width="@dimen/_36dp"
+        android:layout_height="match_parent"/>
+
 </LinearLayout>

buildCommon/commonLibConfig.gradle

@@ -13,7 +13,7 @@ project.ext {
     versions = [
             compileSdkVersion      : 33,
             buildToolsVersion      : "33.0.3",
-            minSdkVersion          : 23,
+            minSdkVersion          : 24,
             targetSdkVersion       : 28,
             versionCode            : 1,
             versionName            : "1.0",