Question

简短摘要：我正在尝试使用PutDataRequest和GoogleApiClient将Android Wear手表中的数据发送到Android手机。日志似乎表明数据已成功发送，但onDataChanged永远不会触发。我使用的是Android Studio 1.0.2。我没有使用任何模拟器，而是使用我自己的Android Wear手表 - 我已配对并通过手机上的Android Wear设备和Android Wear应用程序启用调试。在手机和Wear的AndroidManifest.xml上，我都包含了com.google.android.gms.version。

在Android手机（Android 4.4.4版本）上，我使用了一个侦听器服务，该服务通过AndroidManifest.xml绑定，并通过手机上的主要活动启动。从日志中，我可以确认在手机上成功创建了服务，但是没有收到任何数据（onDataChanged永远不会触发 - 准确地说）。

    <!-- Phone manifest, registers the listener -->
    <service android:name=".DataLayerListenerService" >
        <intent-filter>
            <action android:name="com.google.android.gms.wearable.BIND_LISTENER" />
        </intent-filter>
    </service>

以下是在手机上运行的监听服务：

public class DataLayerListenerService extends WearableListenerService {
    private static final String TAG = DataLayerListenerService.class.getName();
    private GoogleApiClient mGoogleApiClient;

    private static final String WEARABLE_DATA_PATH = "/audio";

    @Override
    public void onCreate() {
        // I can see this fires properly on the Android mobile phone
        Logger.d(TAG, "onCreate");
    }

    @Override
    public void onDataChanged(DataEventBuffer dataEvents) {
        // This never fires on the Android mobile phone, even though Wear says data was sent successfully
        Logger.d(TAG, "on change");
    }
}

在Wear设备上，我有一个主要活动，可以创建一个Google API客户端。我使用UI按钮从音频生成输入（代码未显示），我知道这是因为日志记录正常工作。然后我尝试将这些数据从磨损设备发送到手机。在日志中，我看到＆＃34;结果可用。状态：状态{statusCode = SUCCESS，resolution = null}＆＃34; （我使用结果回调来跟踪）。

public class MainActivity extends Activity implements
    GoogleApiClient.ConnectionCallbacks,
    GoogleApiClient.OnConnectionFailedListener {
    private static final String TAG = MainActivity.class.getName();
    private static final int SPEECH_REQUEST_CODE = 1;

    private static final int RECORDER_SAMPLERATE = 44100;
    private static final int RECORDER_CHANNELS = AudioFormat.CHANNEL_IN_STEREO;
    private static final int RECORDER_AUDIO_ENCODING = AudioFormat.ENCODING_PCM_16BIT;

    private TextView mTextView;
    private AudioRecord recorder;
    private int bufferSize = 0;
    private Thread recordingThread = null;
    private GoogleApiClient mGoogleApiClient;
    private volatile boolean isRecording;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        Log.d(TAG, "Creating MainActivity");
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        final WatchViewStub stub = (WatchViewStub) findViewById(R.id.watch_view_stub);
        stub.setOnLayoutInflatedListener(new WatchViewStub.OnLayoutInflatedListener() {
            @Override
            public void onLayoutInflated(WatchViewStub stub) {
                mTextView = (TextView) stub.findViewById(R.id.text);
            }
        });

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

    // Connect to the data layer when the Activity starts
    @Override
    protected void onStart() {
        super.onStart();
        mGoogleApiClient.connect();
    }

    protected void onResume() {
        if (null != mGoogleApiClient && !mGoogleApiClient.isConnected()) {
            mGoogleApiClient.connect();
        }
        super.onResume();
    }

    @Override
    protected void onStop() {
        if (null != mGoogleApiClient && mGoogleApiClient.isConnected()) {
            mGoogleApiClient.disconnect();
        }
        super.onStop();
    }

    // Placeholders for required connection callbacks
    @Override
    public void onConnectionSuspended(int cause) {
        Log.d(TAG, "Connection suspended");
    }

    @Override
    public void onConnectionFailed(ConnectionResult connectionResult) {
        Log.d(TAG, "Connection failed");
    }

    @Override
    public void onConnected(Bundle connectionHint) {
        Log.d(TAG, "Connected successfully");
    }

    // This is invoked from the UI, via a helper method not shown. Logs show the method is invoked fine.
    private void processRawAudioData() {
        byte data[] = new byte[bufferSize];
        int read = 0;
        while(isRecording) {
            read = recorder.read(data, 0, bufferSize);

            if(AudioRecord.ERROR_INVALID_OPERATION != read) {
                Log.d(TAG, "Successfully read " + data.length + " bytes of audio");
                Log.d(TAG, "Initial ten bytes: " + data[0] + data[1] + data[2] + data[3]
                    + data[4] + data[5] + data[6] + data[7] + data[8] + data[9] + data[10]);

                Asset myAsset = Asset.createFromBytes(data);
                PutDataRequest request = PutDataRequest.create("/audio");
                // might need to change time each time for other end to see change.
                request.putAsset("profileImage", myAsset);
                PendingResult<DataApi.DataItemResult> result =
                    Wearable.DataApi.putDataItem(mGoogleApiClient, request);
                result.setResultCallback(new ResultCallback<DataApi.DataItemResult>() {
                    @Override
                    public void onResult(DataApi.DataItemResult dataItemResult) {
                     // LOGS SHOW STATUS "MainActivity﹕ result available. Status: Status{statusCode=SUCCESS, resolution=null}"   
                     Log.d(TAG, "result available. Status: " + dataItemResult.getStatus());
                    }
                });
            }
        }
    }
}

Answer 1

为了WearableListenerService触发'onDataChanged'事件，applicationId's和可穿戴应用中的main app必须匹配（build.gradle files）。

另外，您无法发送静态数据，数据必须更改。这意味着PutDataMapRequest对象中的数据必须正在改变。

Answer 2

在send dataapimap中添加一个键值 map.put（“timestamp”，System.currentmillions（））

Answer 3

您的onReceive是否被调用？

我遇到了类似的问题，其中手持设备发送数据但是监听器服务没有被调用。这是因为app和磨损gradle文件之间的不一致。

我的应用程序有多种口味，我必须将其删除并使其成绩与磨损相同，并且在那之后一切顺利进行

Answer 4

您是否在侦听器端应用中添加了 Wearable.DataApi.addListener（）？

Answer 5

好的，所以我遇到了同样的问题，我发现从手机发送事件时我没有连接，所以我从未见过它。关键是： onDataChanged（）不会触发，除非GoogleApiClient在发送时已连接并正在收听。一旦重新连接，它似乎不会向您发送您错过的事件;当你连接（）时，你必须手动轮询错过的DataItems。

至少，这对我来说似乎是一个错误：我希望onDataChanged（）可以触发客户端断开连接时发送的任何事件。假设那我错了吗？

无论如何，这是我每次连接时手动轮询我错过的事件的方式：

@Override
public void onConnected(Bundle bundle) {

    Wearable.DataApi.addListener(googleApiClient, this);

    syncPresets();
}
@Override
public void onConnectionSuspended(int i) {

    Wearable.DataApi.removeListener(googleApiClient, this);
}

private void syncPresets() {

    // Ok, so the reason is, we're calling Wearable.DataApi.addListener(googleApiClient, this);
    // only when we connect. 
    // thus, we manually poll for the ones we missed...
    Wearable.DataApi.getDataItems(googleApiClient, getDataUri(WEARABLE_DATA_PATH))
            .setResultCallback(new ResultCallback<DataItemBuffer>() {
                @Override
                public void onResult(DataItemBuffer dataItems) {
                    Status status = dataItems.getStatus();

                    if (status.isSuccess()) {

                        for (DataItem dataItem : dataItems) {

                            Log.d(TAG, "Synced image " + dataItem);
                            if (dataItem != null) {



                                // do whatever you do with the items here...
                                onReceivedImage(dataItem);



                            }
                        }
                    } else {
                        Log.d(TAG, "Failed getting image: (" + status.getStatusCode() + ") " + status.getStatusMessage());
                    }

                    dataItems.release();
                }
            });
}

Android Wear将数据发送到Android手机，但手机似乎永远不会收到它

5 个答案: