Question

我正在尝试使用DataApi，但我没有收到可穿戴方面的数据。这是我的代码：

移动方面：

public class Moto360Service implements GoogleApiClient.ConnectionCallbacks, MessageApi.MessageListener {
    private static final String TAG = Moto360Service.class.getSimpleName();

    private static Moto360Service moto360ServiceInstance = null;


    private GoogleApiClient mApiClient;

        public Moto360Service() {
        Log.v(TAG, "Moto360Service instance Created");
        //Favourites
        mSelectionOrangeContent = new ArrayList<WatchData>();
        mMyRadiosContent = new ArrayList<WatchData>();
        mMyPodcastsContent = new ArrayList<WatchData>();

        //
        initGoogleApiClient();

    }

    public static Moto360Service getInstance() {
        synchronized (TAG) {
            if (moto360ServiceInstance == null) {
                moto360ServiceInstance = new Moto360Service();
            }
        }
        return moto360ServiceInstance;
    }

    private void initGoogleApiClient() {
        mApiClient = new GoogleApiClient.Builder(OrangeradioApplication.getInstance().getApplicationContext())
                .addApi( Wearable.API )
                .build();

        mApiClient.connect();
    }

    @Override
    public void onConnected(Bundle bundle) {
        Log.d(TAG, "connect to watch");
        String[] data = {"c","d","e" + + System.currentTimeMillis()};
        new DataTask (data).execute();
    }

class DataTask extends AsyncTask<Node, Void, Void> {

    private final String[] content;

    public DataTask (String [] content) {
        this.content = content;
    }

    @Override
    protected Void doInBackground(Node... nodes) {

        PutDataMapRequest dataMap = PutDataMapRequest.create ("/watch/data");
        dataMap.getDataMap().putStringArray("content", content);

        PutDataRequest request = dataMap.asPutDataRequest();

      PendingResult<DataApi.DataItemResult> pendingResult = Wearable.DataApi.putDataItem(mApiClient, request);
        pendingResult.setResultCallback(new ResultCallback<DataApi.DataItemResult> () {
            @Override
            public void onResult(DataApi.DataItemResult dataItemResult) {
                // something
                Log.d(TAG, "SOMETHING");
                Log.d(TAG, "dataItemResult : " + dataItemResult.getDataItem());
                if (dataItemResult.getStatus().isSuccess()) {
                    Log.d(TAG, "message successfully sent");
                } else if (dataItemResult.getStatus().isInterrupted()) {
                    Log.e(TAG, "couldn't send data to watch (interrupted)");

                } else if (dataItemResult.getStatus().isCanceled()) {
                    Log.e(TAG, "couldn't send data to watch (canceled)");

                }
            }
        } );

        Log.d(TAG, "sending data");
        return null;
    }
}

磨损面：

public class MainActivity extends Activity implements MessageApi.MessageListener, GoogleApiClient.ConnectionCallbacks,DataApi.DataListener, WearableListView.ClickListener {

private GoogleApiClient mApiClient;
private SimpleListAdapter mAdapter;
private static final String TAG = MainActivity.class.getSimpleName();

private ArrayList<String> list = new ArrayList<>();
private WearableListView mListView;

private ProgressDialog dialog;
private String showReceived;
private Float showSize;
private Context mContext;

private Handler myHandler = new Handler();
private int progressValue = 0;


@Override
protected void onCreate(Bundle savedInstanceState){
    super.onCreate(savedInstanceState);
    ...

    initGoogleApiClient();
}

private void initGoogleApiClient() {
    mApiClient = new GoogleApiClient.Builder( this )
            .addApi( Wearable.API )
            .addConnectionCallbacks( this )
            .build();

    if( mApiClient != null && !( mApiClient.isConnected() || mApiClient.isConnecting() ) )
        mApiClient.connect();
}

@Override
public void onConnected(Bundle bundle) {
    Log.d(TAG, "connected");
    Wearable.DataApi.addListener(mApiClient, this);
    Wearable.MessageApi.addListener(mApiClient, this);
}

@Override
public void onDataChanged(DataEventBuffer dataEventBuffer) {
    Log.d(TAG, "data changed");
}
}

在可穿戴设备上未收到该消息，但该消息是从移动设备发送的。

private void sendMessage(final String path, final String text) {
    new Thread( new Runnable() {
        @Override
        public void run() {
            NodeApi.GetConnectedNodesResult nodes = Wearable.NodeApi.getConnectedNodes( mApiClient ).await();
            for (Node node : nodes.getNodes()) {
                Log.d(TAG, "name : " + node.getDisplayName() + "id : " + node.getId());
                Log.d(TAG, "mApiClient : " + mApiClient);
                Log.d(TAG, "sending message");
                Wearable.MessageApi.sendMessage(mApiClient, node.getId(), path, text.getBytes());
            }
        }
    }).start();
}

在日志中，我看到找到了节点：

D/Moto360Service﹕ name : Moto 360 E109id : ca292f00

磨损清单：http://pastebin.com/C5BuXWx8

编辑：

我尝试了以下方法（在每次请求时进行更改）：

String[] data = {"a","b","c" + System.currentTimeMillis()};
new DataTask (data).execute();

但它并没有改变任何事情。

Answer 1

只有在添加新数据时才会调用

onDataChanged()，因此如果添加相同的数据（即具有相同内容和路径的数据项），则不会触发该方法。查看是否是这种情况的一种方法是为数据添加时间戳，并查看是否会触发回调。

onDataChanged侦听器未检测到数据传输（Data Api）

1 个答案: