private void registerService() {
   activity.registerReceiver(
       recordingBroadcastReceiver,
       new IntentFilter(RecordingService.SERVICE_BROADCAST_ACTION_START));
   activity.registerReceiver(
       recordingBroadcastReceiver,
       new IntentFilter(RecordingService.SERVICE_BROADCAST_ACTION_PAUSE));
   activity.registerReceiver(
       locationBroadcastReceiver,
       new IntentFilter(RecordingService.BROADCAST_ACTION_LOCATION_CHANGED));
 }