MessengerActivity

gistfile1.txt

public class MessengerActivity extends Activity {

    private static final String TAG = "MessengerActivity";

    private Messenger mService;
    private Messenger mGetReplyMessenger = new Messenger(new MessengerHandler());
    
    private static class MessengerHandler extends Handler {
        @Override
        public void handleMessage(Message msg) {
            switch (msg.what) {
            case MyConstants.MSG_FROM_SERVICE:
                Log.i(TAG, "receive msg from Service:" + msg.getData().getString("reply"));
                break;
            default:
                super.handleMessage(msg);
            }
        }
    }

    private ServiceConnection mConnection = new ServiceConnection() {
        public void onServiceConnected(ComponentName className, IBinder service) {
            mService = new Messenger(service);
            Log.d(TAG, "bind service");
            Message msg = Message.obtain(null, MyConstants.MSG_FROM_CLIENT);
            Bundle data = new Bundle();
            data.putString("msg", "hello, this is client.");
            msg.setData(data);
            msg.replyTo = mGetReplyMessenger;
            try {
                mService.send(msg);
            } catch (RemoteException e) {
                e.printStackTrace();
            }
        }

        public void onServiceDisconnected(ComponentName className) {
        }
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_messenger);
        Intent intent = new Intent("com.ryg.MessengerService.launch");
        bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
    }
    
    @Override
    protected void onDestroy() {
        unbindService(mConnection);
        super.onDestroy();
    }
}