BroadcastReceiver() 구현.

등록.

addAction :  com.hilu0318.ImageSelectActivityReceiver 와 같은 형태로 등록.

IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction("Action Name");    
registerReceiver(new ImgBroadcastReceiver() ,intentFilter);

응답.

전송단에서 intent에 응답구별코드를 넣어서 전송한다.

class ImgBroadcastReceiver extends BroadcastReceiver{
    @Override
    public void onReceive(Context context, Intent intent) {

    }
}

전송.

sendBroadcast에 인텐트를 넣어서 전송.

Intent broadcastIntent = new Intent("전송할 Action Name");
broadcastIntent.putExtra("Key Name", 전송 값 );
sendBroadcast(broadcastIntent);