Question

So I have my onResume command restarting a stopped thread which runs my game loop.
This works perfectly for resuming the app when closed by home button or by focusing on another app.
However, when you turn the screen off then on again, the activities onResume command fires right away before screen is unlocked. I need my activity to know when the screen is unlocked so it can restart the thread at the appropriate time.

Has anyone had this happen before?

Answer 1

for detect screen on and screen off register a broadcast reciver like:

AndroidManifest.xml:

    <receiver android:name="receiverScreen">
        <intent-filter> 
            <action android:name="android.intent.action.SCREEN_ON" />
            <action android:name="android.intent.action.SCREEN_OFF" />
<action android:name="android.Intent.ACTION_USER_PRESENT" />
        </intent-filter> 
    </receiver>

In Activity or Service:

    try {
              IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_ON);

              filter.addAction(Intent.ACTION_SCREEN_OFF);
filter.addAction(Intent.ACTION_USER_PRESENT);

              BroadcastReceiver mReceiver = new receiverScreen();

              registerReceiver(mReceiver, filter);
         } catch (Exception e) {

         }

receiver code where System inform you if Screen on/off happen:

 public class receiverScreen extends BroadcastReceiver {

     @Override
     public void onReceive(Context context, Intent intent) {

         if (intent.getAction().equals(Intent.ACTION_SCREEN_ON)){

         }
        if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)){

         }
if (intent.getAction().equals(Intent.ACTION_USER_PRESENT)){

         }
     }

    }