wear-os之从 Android Wear 向主机设备发送消息_编程设计

我正在编写一个自定义 Android Wear 应用程序，该应用程序应该向连接的主机设备(电话)发送一次性消息。通过 API 挖掘，我发现以下教程应该可以很好地工作:http://developer.android.com/training/wearables/data-layer/messages.html

我的 Android 应用程序有一个 WearableListenerService，我的 Android Wear 应用程序使用 Message API 触发消息。根据记录以下方法连接模拟器时会调用 WearableListenerService ，因此我很确定该服务连接良好

@Override 
public void onPeerConnected(Node peer) { 
    super.onPeerConnected(peer); 
 
    String id = peer.getId(); 
    String name = peer.getDisplayName(); 
 
    Log.d(LOG_TAG, "Connected peer name & ID: " + name + "|" + id); 
}

日志输出:

/AndroidWearListenerService(19892): Connected peer name & ID: facdc219-37f5-4326-8fa6-1c8b8d3b6669|facdc219-37f5-4326-8fa6-1c8b8d3b6669

但是， onMessageReceived 方法永远不会被触发:

@Override 
public void onMessageReceived(MessageEvent messageEvent) { 
    Log.d(LOG_TAG, "MessageEvent received: " + messageEvent.getData()); 
    //do work 
}

这是我的 Android Wear 代码。我已经删除了大部分样板代码，只留下了必要的位

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_my); 
 
    final GoogleApiClient googleApiClient = new GoogleApiClient.Builder(this) 
            .addApi(Wearable.API) 
            .build(); 
 
    googleApiClient.connect(); 
 
    final WatchViewStub stub = (WatchViewStub) findViewById(R.id.watch_view_stub); 
    stub.setOnLayoutInflatedListener(new WatchViewStub.OnLayoutInflatedListener() { 
        @Override 
        public void onLayoutInflated(WatchViewStub stub) { 
            fireMessage(); 
        } 
 
        private void fireMessage() { 
            // Send the RPC 
            PendingResult<NodeApi.GetConnectedNodesResult> nodes = Wearable.NodeApi.getConnectedNodes(googleApiClient); 
            nodes.setResultCallback(new ResultCallback<NodeApi.GetConnectedNodesResult>() { 
                @Override 
                public void onResult(NodeApi.GetConnectedNodesResult result) { 
                    for (int i = 0; i < result.getNodes().size(); i++) { 
                        Node node = result.getNodes().get(i); 
                        String nName = node.getDisplayName(); 
                        String nId = node.getId(); 
                        Log.d(TAG, "Node name and ID: " + nName + " | " + nId); 
 
                        Wearable.MessageApi.addListener(googleApiClient, new MessageApi.MessageListener() { 
                            @Override 
                            public void onMessageReceived(MessageEvent messageEvent) { 
                                Log.d(TAG, "Message received: " + messageEvent); 
                            } 
                        }); 
 
                        PendingResult<MessageApi.SendMessageResult> messageResult = Wearable.MessageApi.sendMessage(googleApiClient, node.getId(), 
                                PATH, null); 
                        messageResult.setResultCallback(new ResultCallback<MessageApi.SendMessageResult>() { 
                            @Override 
                            public void onResult(MessageApi.SendMessageResult sendMessageResult) { 
                                Status status = sendMessageResult.getStatus(); 
                                Log.d(TAG, "Status: " + status.toString()); 
                                if (status.getStatusCode() != WearableStatusCodes.SUCCESS) { 
                                    alertButton.setProgress(-1); 
                                    label.setText("Tap to retry. Alert not sent :("); 
                                } 
                            } 
                        }); 
                    } 
                } 
            }); 
        } 
    }); 
}

日志记录似乎表明消息已成功发送，但 Android 应用程序的 WearableListenerService.onMessageReceived 从未触发。

D/MyWearApp MyActivity( 2014): Node name and ID: a2ba665d-a559-4a95-91d2-c16fc7873e28 | a2ba665d-a559-4a95-91d2-c16fc7873e28 
D/MyWearApp MyActivity( 2014): Status: Status{statusCode=SUCCESS, resolution=null}

有任何想法吗？

请您参考如下方法:

您是否确保两个应用程序的“ applicationId ”相同，即 Android Wear 上的应用程序和手机上的应用程序？