Broadcast receiver not working when app is closed

Question

So I have two different apps made, one sends a broadcast and another receives it and displays a toast. However, when I close the receiver app the broadcast is no longer rece

Answer 1

First of all you need to use the Service for this functionality to work.

In the Activity you can start and stop the service by using the below codes.

// to start a service
Intent service = new Intent(context, MyBrodcastRecieverService.class);
context.startService(service);

// to Stop service
Intent service = new Intent(context, MyBrodcastRecieverService.class);
context.stopService(service);

Then you can use the below service

public class MyBrodcastRecieverService extends Service
{
    private static BroadcastReceiver br_ScreenOffReceiver;

    @Override
    public IBinder onBind(Intent arg0)
    {
        return null;
    }

    @Override
    public void onCreate()
    {
        registerScreenOffReceiver();
    }

    @Override
    public void onDestroy()
    {
        unregisterReceiver(br__ScreenOffReceiver);
        m_ScreenOffReceiver = null;
    }

    private void registerScreenOffReceiver()
    {
        br_ScreenOffReceiver = new BroadcastReceiver()
        {
            @Override
            public void onReceive(Context context, Intent intent)
            {
                Log.d(TAG, "ACTION_SCREEN_OFF");
                // do something, e.g. send Intent to main app
            }
        };
        
        IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_OFF);
        registerReceiver(br_ScreenOffReceiver, filter);
    }
}