WearOS 应用程序不接收来自安卓手机的数据

Posted 2023-02-26

【中文标题】WearOS 应用程序不接收来自安卓手机的数据

【英文标题】：WearOS app does not receive data from android phone

【发布时间】：2020-01-11 15:13:00

【问题描述】：

我有一个简单的程序，我只是从我的手机向我的 Wearos 模拟器发送一条消息，反之亦然，但 onReceive 函数应用程序永远不会在两个设备上被调用。 （是的，我已将手机与模拟器配对）

这是我的安卓手机代码：

public class MainActivity extends AppCompatActivity 

Button talkbutton;
TextView textview;
protected Handler myHandler;
int receivedMessageNumber = 1;
int sentMessageNumber = 1;

@Override
protected void onCreate(Bundle savedInstanceState) 
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    talkbutton = findViewById(R.id.talkButton);
    textview = findViewById(R.id.textView);

    //Create a message handler//
    myHandler = new Handler(new Handler.Callback() 
        @Override
        public boolean handleMessage(Message msg) 
            Bundle stuff = msg.getData();
            messageText(stuff.getString("messageText"));
            return true;
        
    );

    IntentFilter messageFilter = new IntentFilter(Intent.ACTION_SEND);
    Receiver messageReceiver = new Receiver();
    LocalBroadcastManager.getInstance(this).registerReceiver(messageReceiver, messageFilter);



public void messageText(String newinfo) 
    if (newinfo.compareTo("") != 0) 
        textview.append("\n" + newinfo);
    


//Define a nested class that extends BroadcastReceiver//
public class Receiver extends BroadcastReceiver 
    @Override

    public void onReceive(Context context, Intent intent) 
        String message = "I just received a message from the wearable " + receivedMessageNumber++;;
        textview.setText(message);
    


public void talkClick(View v) 
    String message = "Sending message.... ";
    textview.setText(message);
    new NewThread("/my_path", message).start();



//Use a Bundle to encapsulate the message//
public void sendmessage(String messageText) 
    Bundle bundle = new Bundle();
    bundle.putString("messageText", messageText);
    Message msg = myHandler.obtainMessage();
    msg.setData(bundle);
    myHandler.sendMessage(msg);



class NewThread extends Thread 
    String path;
    String message;

    //Constructor for sending information to the Data Layer//
    NewThread(String p, String m) 
        path = p;
        message = m;
    

    public void run() 

    //Retrieve the connected devices
        Task<List<Node>> wearableList =
                Wearable.getNodeClient(getApplicationContext()).getConnectedNodes();
        try 

            List<Node> nodes = Tasks.await(wearableList);
            for (Node node : nodes) 
                Task<Integer> sendMessageTask =

                //Send the message//
                Wearable.getMessageClient(MainActivity.this).sendMessage(node.getId(), path, message.getBytes());
                Integer result = Tasks.await(sendMessageTask);
                sendmessage("I just sent the wearable a message " + sentMessageNumber++);
            

         catch (Exception exception) 
            Toast.makeText(getApplicationContext(),exception.getMessage(),Toast.LENGTH_LONG);
        
    

MessageService 将消息发送到 wear os 应用程序：

public class MessageService extends WearableListenerService 

@Override
public void onMessageReceived(MessageEvent messageEvent) 

    if (messageEvent.getPath().equals("/my_path")) 

        final String message = new String(messageEvent.getData());

        Intent messageIntent = new Intent();
        messageIntent.setAction(Intent.ACTION_SEND);
        messageIntent.putExtra("message", message);
        LocalBroadcastManager.getInstance(this).sendBroadcast(messageIntent);
    
    else 
        super.onMessageReceived(messageEvent);
    

由于两个应用程序的接收和发送功能非常相同，我认为它足以向您展示来自 android 设备的代码，但如果您喜欢这里是来自 wearos 应用程序的接收方法：

    IntentFilter newFilter = new IntentFilter(Intent.ACTION_SEND);
    Receiver messageReceiver = new Receiver();

    LocalBroadcastManager.getInstance(this).registerReceiver(messageReceiver, newFilter);



    public class Receiver extends BroadcastReceiver 
     @Override
     public void onReceive(Context context, Intent intent) 

     //Display the following when a new message is received//

     String onMessageReceived = "I just received a message from the handheld " + receivedMessageNumber++;
     textView.setText(onMessageReceived);

     
    

【参考方案1】：

您是否添加了所需的intent filter in your Manifest.xml for the WearableListenerService？像这样的：

     <service android:name="your.package.YourWatchListenerService">
            <intent-filter>
                <action android:name="com.google.android.gms.wearable.MESSAGE_RECEIVED" />
                <data
                    android:host="*"
                    android:pathPrefix="/my_path"
                    android:scheme="wear" />
            </intent-filter>
        </service>