Android - how to receive broadcast intents ACTION_SCREEN_ON/OFF?

Question

    <application>          <receiver android:name=".MyBroadcastReceiver" android:enabled="true">                 <intent-filter>                       <action android:name="android.intent.action.ACTION_SCREEN_ON"></action>                       <action android:name="android.intent.action.ACTION_SCREEN_OFF"></action>                 </intent-filter>          </receiver> ...     </application> 

MyBroadcastReceiver is set just to spit foo to the logs. Does nothing. Any suggestions please? Do I need to assign any permissions to catch the intent?

Answer 1

I believe that those actions can only be received by receivers registered in Java code (via registerReceiver()) rather than through receivers registered in the manifest.

Answer 2

Alternatively you can use the power manager to detect screen locking.

@Override protected void onPause() {     super.onPause();      // If the screen is off then the device has been locked     PowerManager powerManager = (PowerManager) getSystemService(POWER_SERVICE);     boolean isScreenOn;     if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT_WATCH) {         isScreenOn = powerManager.isInteractive();     } else {         isScreenOn = powerManager.isScreenOn();     }      if (!isScreenOn) {          // The screen has been locked          // do stuff...     } }