Notification on Android Wear is working but Data Layer isn't

Question

I'm developing an Android app that includes some wearable features. I have some notifications using WearableExtender and they're working fine. But when I try to use the Data Layer Api it doesn't work.

I've used the code proposed in the answer of this post: Android Wear Watchface Settings on host but onDataChanged(DataEventBuffer dataEvents) is never called. I'm using Android emulator for mobile and watch.

This is what I get on the watch's LogCat:

11-10 05:43:44.777: D/DataItems(1333): inserted data item row 60 for DataItemRecord
[es.example.rebeca.prueba,10b8f01e736f2a1276b2bbf41a6c6dd18c005e65,DataItemInternal
[f702125c, dataSz=65, host=db03afd0-746e-48ad-8b0d-98ff360bf672, path=/SAMPLE, numAssets=0],
db03afd0-746e-48ad-8b0d-98ff360bf672,seqId=13136,assetsAreReady=false]

it seems like something is received on the watch with the appropiate path (path=/SAMPLE). However, I can't see any messages (I put a few Logs to check if the data gets to the watch).

Any hint would be appreciated.

EDIT:

The code I use on the phone side:

public class MainActivity extends Activity {
    private GoogleApiClient mGoogleApiClient;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
       mGoogleApiClient = new GoogleApiClient.Builder(this)
           .addConnectionCallbacks(new GoogleApiClient.ConnectionCallbacks() {
                @Override
                public void onConnected(Bundle connectionHint) {
                   Log.d("DataLayerApi", "onConnected()"); //This is shown
           }
                @Override
                public void onConnectionSuspended(int cause) { }
                })
           .addOnConnectionFailedListener(new GoogleApiClient.OnConnectionFailedListener() {
                @Override
                public void onConnectionFailed(ConnectionResult result) {}
           })
           .addApi(Wearable.API)
           .build();
        mGoogleApiClient.connect();
    }

    public void sendWearable(View v) {  //This is a button
        syncSampleDataItem();
    }

    private void syncSampleDataItem() {
        if(mGoogleApiClient == null)
        return;

        final PutDataMapRequest putRequest = PutDataMapRequest.create("/SAMPLE");
        final DataMap map = putRequest.getDataMap();
        map.putInt("color", Color.RED);
        map.putString("string_example", "Sample String");
        Wearable.DataApi.putDataItem(mGoogleApiClient,  putRequest.asPutDataRequest());
    }
}

in the AndroidManifest.xml:

<uses-feature android:name="android.hardware.type.watch" />

The code I use on the wearable side:

public class ListenerService extends WearableListenerService { 

String myTag = "DataLayerApi";

@Override
public void onDataChanged(DataEventBuffer dataEvents) {
    super.onDataChanged(dataEvents);
    Log.d(myTag, "onDataChanged()" + dataEvents); //This is NEVER shown

    final List<DataEvent> events = FreezableUtils.freezeIterable(dataEvents);
    for(DataEvent event : events) {
        final Uri uri = event.getDataItem().getUri();
        final String path = uri!=null ? uri.getPath() : null;
        if("/SAMPLE".equals(path)) {
            final DataMap map = DataMapItem.fromDataItem(event.getDataItem()).getDataMap();
            // read your values from map:
            int color = map.getInt("color");
            String stringExample = map.getString("string_example");
            Log.d(myTag, color + stringExample); //This is NEVER shown
        }
    }
}

in the AndroidManifest.xml:

<service android:name=".ListenerService"
        android:exported="true" >
        <intent-filter>
            <action android:name="com.google.android.gms.wearable.BIND_LISTENER" />
        </intent-filter>
</service>

and in both Manifests I have the line:

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

inside the application tag

Answer 1

So it turns out that you need to use the SAME package name in both wearable and handheld modules. I changed it and now the code is working!