Question

I have a service from which I instationate my ScreenReceiver class. How can I notify service when OnRecieve method of ScreenReceiver is triggered? I’d like the update() method to be called when ‘onRecieve` is trigerred.

StateChecker.java (draft):

public class StateChecker extends Service {
   //...
   // setting TimeAlarm
   TimeAlarm mTimeAlarm = new TimeAlarm();
   mTimeAlarm.SetAlarm(this.getApplicationContext(),10);

   public void update() {
   //update sth
   }
   //...
}

ScreenReceiver.java (draft):

public class ScreenReceiver extends BroadcastReceiver {
    //...   

   @Override
   public void onReceive(Context context, Intent intent) {
    //...
    PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
   }
    //...
}

Answer 1

You can probably do something like this:

Make a new Intent to your Service from the Receiver, passing off an Extra, then override onStartCommand() in the Service. Check the intent for the Extra, and if the Extra exists, call update().

Also, if you use this instead of this.getApplicationContext(), it is very likely that your Receiver‘s onReceive() Context parameter will be the service. Then you can just cast.

Eg

if (context instanceof StateChecker)
  ((StateChecker) context).update();