Question

onMessageReceived仅在WearabeListenerService中调用。如果我不使用服务，只需将我的Activity注册为MessageApi监听器不调用onMessageReceived。我将听众注册如下：

   if (!mConnection.isConnected()) {
            phoneConnectionError();
        } else {
            Wearable.MessageApi.addListener(mConnection, this).setResultCallback(new ResultCallback<Status>() {
                @Override
                public void onResult(Status status) {
                    Log.d("Viera","Add listener success: "+status.isSuccess());
                }
            });
    }

状态总是成功。我做错了什么？

编辑：根据要求，这里有更多活动代码：

Edit2：添加了更多代码

    public class MainActivity extends WearableActivity
          implements ResultCallback<MessageApi.SendMessageResult>, MessageApi.MessageListener {



        private BoxInsetLayout mContainerView;
        private String nodeId;
        private GoogleApiClient mConnection;

        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);

            getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

            setContentView(R.layout.activity_main);
            mContainerView = (BoxInsetLayout) findViewById(R.id.container);

            mConnection = new GoogleApiClient.Builder(this)
                    .addApi(Wearable.API)
                    .build();
            setAmbientEnabled();
            retrieveDeviceNode();
        }


        @Override
        public void onMessageReceived(MessageEvent messageEvent) {
            Log.d("Viera","Recieved: "+messageEvent.getPath());
            if (messageEvent.getPath().equals("tvException")) {
                tvException();
            }
        }



        @Override
        protected void onDestroy() {
            super.onDestroy();
            Wearable.MessageApi.removeListener(mConnection, this);
            mConnection.disconnect();
        }


        private void afterNodeSearch() {

            if (nodeId == null || !mConnection.isConnected()) {
                phoneConnectionError();
            } else {
                Wearable.MessageApi.addListener(mConnection, this).setResultCallback(new ResultCallback<Status>() {
                    @Override
                    public void onResult(Status status) {
                        Log.d("Viera","Add listener success: "+status.isSuccess());
                    }
                });
                //... some other stuff here
            }

        }



        // I know I should to this useig an other API but I know I am connected to the right node 
        // because the Id's here and on mobile device matches
        private void retrieveDeviceNode() {
            findViewById(R.id.loading).setVisibility(View.VISIBLE);
            findViewById(R.id.content).setVisibility(View.GONE);
            new Thread(new Runnable() {
                @Override
                public void run() {
                    mConnection.blockingConnect();
                    NodeApi.GetConnectedNodesResult result =
                            Wearable.NodeApi.getConnectedNodes(mConnection).await();
                    List<Node> nodes = result.getNodes();
                    if (nodes.size() > 0) {
                        nodeId = nodes.get(0).getId();
                    }
                    afterNodeSearch();
                }
            }).start();
        }

  @Override
    public void onResult(MessageApi.SendMessageResult sendMessageResult) {
        if (!sendMessageResult.getStatus().isSuccess()) {
            phoneConnectionError();
        } else {
            Log.d("Viera", "Send successfull!");
        }
    }

    public void onClick(View v) {
        if (nodeId == null) {
            retrieveDeviceNode();
        } else if (!mConnection.isConnected()) {
            connect();
        } else {
            String command = v.getTag().toString();
            sendCommand(COMMAND, command);
        }
    }

    private final static String COMMAND = "onCommand", START_APP = "startApp";

    private void sendCommand(final String command, final String msg) {
        if (nodeId != null) {
            new Thread(new Runnable() {
                @Override
                public void run() {
                    if (mConnection.isConnected()) {
                        byte[] msgBytes = null;
                        if (msg != null) msg.getBytes();
                        Wearable.MessageApi.sendMessage(mConnection, nodeId, command, msgBytes).setResultCallback(MainActivity.this);
                    } else {
                        phoneConnectionError();
                    }
                }
            }).start();
        }
    }
    }

Answer 1

好的，我终于找到了问题：

我使用的是错误的钥匙！可穿戴设备和移动应用程序的签名是不同的！

它发现，当发送消息时，我总是会在WerableListenerService中被通知，即使是使用Wearable.MessageApi.addListener注册的监听器中不同的签名但不是。

这意味着我的代码是正确的，但我的建筑错了！

Answer 2

根据您提供的代码，您正在构建一个GoogleApiClient（您称之为mConnection），但您从未连接过它（即从未调用mConnection.connect（））。此外，在构建GoogleApiClient时，还需要定义两个侦听器（可能是您的活动）;一个用于接收成功的连接回调，一个用于接收故障。在成功连接的那个中，有一个onConnected（）回调，您应该使用它来添加MessageApi监听器等。如果您在GitHub仓库中查看Wear的任何示例项目，您将看到所有这些都可以做到。

onMessageReceived仅在Service中调用，但不在Activity

2 个答案: