Android 手持设备和可穿戴设备收不到消息

Question

我正在尝试从可穿戴设备向手持设备发送消息，然后从手持设备向可穿戴设备发送响应（两个模块使用相同的代码和逻辑）。
Gradle:

compile 'com.google.android.support:wearable:2.0.0-alpha2'
compile 'com.google.android.gms:play-services-wearable:9.6.1'

...

classpath 'com.android.tools.build:gradle:2.2.1'
classpath 'com.google.gms:google-services:3.0.0'

AndroidManifest:

    <application>
    ...
        <service android:name=".ReceiverService"
                 android:enabled="true"
                 android:exported="true">
            <intent-filter>
                <action android:name="com.google.android.gms.wearable.MESSAGE_RECEIVED"/>
                <data android:scheme="wear" android:host="*"/>
            </intent-filter>
        </service>    
    </application>

ReceiverService:

public class ReceiverService extends WearableListenerService {
    @Override
    public void onMessageReceived(MessageEvent messageEvent) {
        super.onMessageReceived(messageEvent);
        Log.v(TAG, "onMessageReceived: " + messageEvent);
    }
}

MessageSender:

public class MessageSender implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {

    private static final String TAG = "_wear_message_sender";
    private final GoogleApiClient mGoogleApiClient;

    private static class InstanceHolder {
        private static final MessageSender sInstance = new MessageSender();
    }

    private MessageSender() {
        mGoogleApiClient = new GoogleApiClient.Builder(WearApp.getInstance().getContext())
                .addApi(Wearable.API)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .build();
    }

    public static MessageSender getInstance() {
        return InstanceHolder.sInstance;
    }

    public void sendMessage(final String path, final String message) {
        new Thread(new Runnable() {
            @Override
            public void run() {
                if (!mGoogleApiClient.isConnected()) {
                    mGoogleApiClient.blockingConnect(Constants.GOOGLE_API_CLIENT_TIMEOUT_S, TimeUnit.SECONDS);
                }    
                List<Node> nodes = Wearable.NodeApi.getConnectedNodes(mGoogleApiClient).await().getNodes();
                Log.d(TAG, "Nodes count " + nodes.size());

                for (Node node : nodes) {
                    Wearable.MessageApi.sendMessage(mGoogleApiClient, node.getId(), path, message.getBytes()).setResultCallback(new ResultCallback<MessageApi.SendMessageResult>() {
                        @Override
                        public void onResult(MessageApi.SendMessageResult sendMessageResult) {
                            Log.d(TAG, "sendMessage(" + path + "): " + sendMessageResult.getStatus().isSuccess());
                        }
                    });
                }
                mGoogleApiClient.disconnect();
            }
        }).start();
    }
    ...
}

我得到了这个输出：

D/_wear_message_sender: onConnected: null
D/_wear_message_sender: Nodes count 1
D/_wear_message_sender: sendMessage(/test): true

我用过 Moto 360 和模拟器，消息已发送，但手持设备 WearableListenerService onMessageReceived() 未被调用。反之亦然，我从手机 phone 发送了一条消息，但未呼叫可穿戴设备 onMessageReceived。
我在这里错过了什么？

Answer 1

检查 applicationID were the same in the build.gradle for mobile and wear app because otherwise Android wouldn't know to which the messages should be sent. You can check this 。还要确保 buildTypes 部分和 signingConfigs 部分在两个应用程序中相同。

Android 手持设备和可穿戴设备收不到消息

Android handheld and wearable not receiving messages

android

android-service

wear-os