Question

我正在尝试从Android手机向可穿戴设备发送消息，但永远不会调用WearableListenerService中的onMessageReceived方法。我已经验证来自手机的消息成功发送到正确的节点，因此问题似乎出现在可穿戴应用程序的接收端。这是我在可穿戴项目中的监听器类的代码：

public class MessageListener extends WearableListenerService implements GoogleApiClient.ConnectionCallbacks {
@Override
public void onMessageReceived(MessageEvent messageEvent) {
    if (messageEvent.getPath().equals("/message_path")) {
        final String message = new String(messageEvent.getData());

        // Broadcast message to wearable activity for display
        Intent messageIntent = new Intent();
        messageIntent.setAction(Intent.ACTION_SEND);
        messageIntent.putExtra("message", message);
        LocalBroadcastManager.getInstance(this).sendBroadcast(messageIntent);
    }
    else {
        super.onMessageReceived(messageEvent);
    }
}

@Override
public void onPeerConnected(Node peer) {
    Log.v("myTag", "Peer connected: " + peer.getDisplayName());
}

@Override
public void onConnected(Bundle bundle) {
    Wearable.MessageApi.addListener(MainActivityWear.client, this);
}

@Override
public void onConnectionSuspended(int i) {}
}

通过设置断点，我发现onMessageReceived方法和onConnected方法都没有被调用。

以下是可穿戴项目的MainActivity：

public class MainActivityWear extends Activity implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {

private TextView mTextView;
private MessageReceiver messageReceiver;
public static GoogleApiClient client;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main_wear);
    final WatchViewStub stub = (WatchViewStub) findViewById(R.id.watch_view_stub);
    stub.setOnLayoutInflatedListener(new WatchViewStub.OnLayoutInflatedListener() {
        @Override
        public void onLayoutInflated(WatchViewStub stub) {
            mTextView = (TextView) stub.findViewById(R.id.text);
        }
    });
    client = new GoogleApiClient.Builder(this)
            .addApi(Wearable.API)
            .addConnectionCallbacks(this)
            .addOnConnectionFailedListener(this)
            .build();

    // Register the local broadcast receiver
    IntentFilter messageFilter = new IntentFilter(Intent.ACTION_SEND);
    messageReceiver = new MessageReceiver();
    LocalBroadcastManager.getInstance(this).registerReceiver(messageReceiver, messageFilter);
}
// Connect to the data layer when the Activity starts
@Override
protected void onStart() {
    super.onStart();
    client.connect();
}

@Override
public void onStop() {
    super.onStop();
    unregisterReceiver(messageReceiver);
}

@Override
public void onConnected(@Nullable Bundle bundle) {}

@Override
public void onConnectionSuspended(int i) {}

@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {}


public class MessageReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        String message = intent.getStringExtra("message");
        // Display message in UI
        mTextView.setText(message);
    }
}
}

MessageReceiver是一个嵌套类。一切都正确编译，但从未收到消息。提前谢谢！

Answer 1

检查应用程序和设备中的GoogleServicesAPI版本。它们必须是一样的。

检查您的佩戴和手持设备是否与您的应用程序版本相同。如果不是 - 使用最旧的。

PS 不要使用onPeerConnected和onConnectionSuspended。这些方法已被弃用，不会被触发。

Android：Wearable没有收到Message Api消息

1 个答案: