Android wear 无法向 phone 发送消息

Android wear can´t send message to phone

我一直在关注 this tutorial 以从 Android wear 向 Android phone 发送消息,但它不起作用。这是我的代码:

穿

从 Minifest 开始,我实现了 google 播放服务元数据,如下所示:

   <meta-data
        android:name="com.google.android.wearable.standalone"
        android:value="true" />
    <meta-data android:name="com.google.android.gms.version" android:value="@integer/google_play_services_version" />

其次,我初始化 GoogleApiClient,如下所示:

googleClient = new GoogleApiClient.Builder(this)
            .addApi(Wearable.API)
            .addConnectionCallbacks(this)
            .addOnConnectionFailedListener(this)
            .build();

然后,我实现接口所需的所有方法:GoogleApiClient.ConnectionCallbacks 和 GoogleApiClient.OnConnectionFailedListener,像这样:

    @Override
    public void onConnected(Bundle connectionHint) {
        System.out.println("SESSION CONNECTED");
    }

    // Disconnect from the data layer when the Activity stops
    @Override
    protected void onStop() {
        if (null != googleClient && googleClient.isConnected()) {
            googleClient.disconnect();
        }
        super.onStop();
    }

    @Override
    public void onConnectionSuspended(int i) {

    }

   @Override
   protected void onStart() {
      super.onStart();
      googleClient.connect();
   }

    @Override
    public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
        System.out.println("FAILED TO CONNECT: "+connectionResult.getErrorMessage());
    }

最后我实现了将文本发送到 phone:

 NodeApi.GetConnectedNodesResult nodes = Wearable.NodeApi.getConnectedNodes(googleClient).await();
        for (Node node : nodes.getNodes()) {
            MessageApi.SendMessageResult result = Wearable.MessageApi.sendMessage(googleClient, node.getId(), path, message.getBytes()).await();
            if (result.getStatus().isSuccess()) {
                System.out.println("Message: {" + message + "} sent to: " + node.getDisplayName());
            }
            else {
                // Log an error
               System.out.println("ERROR: failed to send Message");
            }
        }

问题是它似乎可以工作(当我开始佩戴时我得到“"SESSION CONNECTED" 字符串),但它找不到任何配对设备来发送字符串,因为列表nodes 是空的。这可能是模拟器的问题吗?phone 和 wear 可能都没有同步,因此他们找不到对方。

Phone

为了展示孔示例,我还包括了 phone 部分:

Manifest.xml

<service android:name=".utils.ListenerService">
        <intent-filter>
            <action android:name="com.google.android.gms.wearable.BIND_LISTENER"
                tools:ignore="WearableBindListener" />
        </intent-filter>
    </service>

监听服务

public class ListenerService extends WearableListenerService {

@Override
public void onMessageReceived(MessageEvent messageEvent) {

    if (messageEvent.getPath().equals("/message_path")) {
        final String message = new String(messageEvent.getData());
        System.out.println("Message path received on watch is: " + messageEvent.getPath());
        System.out.println("Message received on watch is: " + message);
    }
    else {
        super.onMessageReceived(messageEvent);
    }
}

没关系,这是模拟器的问题,它们没有同步。只是尝试使用真实的设备,它成功了。

我的问题是 phone 上的应用程序和手表上的应用程序使用不同的证书签名,尽管它们具有相同的 appid