LocalBroadCast를 이용해서 mainActivity Call mainActivity.java에 statusReceiver defineLocalBroadcastManager.getInstance(this).registerReceiver( statusReceiver, new IntentFilter("STATUS_CHANGED")); sub class에서 main call Intent intent = new Intent("STATUS_CHANGED");intent.putExtra("status", canShake);LocalBroadcastManager.getInstance(context).sendBroadcast(intent); mainActivity에서 response 대응privat..