android remotecallbacklist怎样测试

发布时间:2024-12-05 23:06:52

阅读量:110

要测试Android的RemoteCallbackList，您可以按照以下步骤操作：

创建一个服务类（Service）：首先，您需要创建一个继承自Service的类。在这个类中，您可以实现RemoteCallbackList，以便接收和处理来自客户端的回调。

public class MyService extends Service {
    private final RemoteCallbackList mCallbacks = new RemoteCallbackList<>();

    public interface IMyCallback {
        void onDataReceived(String data);
    }

    public void addCallback(IMyCallback callback) {
        mCallbacks.register(callback);
    }

    public void removeCallback(IMyCallback callback) {
        mCallbacks.unregister(callback);
    }

    public void sendDataToClient(String data) {
        final int N = mCallbacks.beginBroadcast();
        for (int i = 0; i < N class="hljs-type">IMyCallback callback = mCallbacks.getBroadcastItem(i);
            if (callback != null) {
                callback.onDataReceived(data);
            }
        }
        mCallbacks.finishBroadcast();
    }
}

在AndroidManifest.xml中注册服务：

<service android:name=".MyService" />

创建一个客户端Activity：接下来，您需要创建一个Activity，用于连接到服务并接收回调。

public class MyClientActivity extends AppCompatActivity {
    private MyService mService;
    private boolean mBound = false;

    private ServiceConnection mConnection = new ServiceConnection() {
        @Override
        public void onServiceConnected(ComponentName className, IBinder service) {
            MyService.LocalBinder binder = (MyService.LocalBinder) service;
            mService = binder.getService();
            mBound = true;
        }

        @Override
        public void onServiceDisconnected(ComponentName arg0) {
            mBound = false;
        }
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_my_client);

        Intent intent = new Intent(this, MyService.class);
        bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        if (mBound) {
            unbindService(mConnection);
            mBound = false;
        }
    }

    private void sendDataToService() {
        if (mBound) {
            mService.sendDataToClient("Hello from client!");
        }
    }
}

在MyClientActivity中添加按钮，用于触发数据发送：

Button sendButton = findViewById(R.id.send_button);
sendButton.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        sendDataToService();
    }
});