Question

我正在尝试在Nexus手机和华为智能手表（WearOS）之间建立双向连接。手机和手表使用相同的数据发送类别，并且能够互相发送数据。手表能够将信息发送到手机，但不收听信息。我正在使用Message API。

问：如果一切设置正确，为什么手表上没有收到我的信息？

该项目的基本思想是，当从智能手表（通过加速度计数据）检测到跌倒时，手机和手表可以相互发送消息，以供手表改变活动并提示出现另一个屏幕。（主屏幕与提示屏幕）。

public class MainActivity extends WearableActivity implements 
SensorEventListener, GoogleApiClient.ConnectionCallbacks, 
GoogleApiClient.OnConnectionFailedListener, 
MessageClient.OnMessageReceivedListener {

    MessageListener messageListen;
    private TextView mTextView;
    private SensorManager mSensorManager;
    private Sensor accelerometer;
    private float[] values;
    //private long startTime;
    private GoogleApiClient mGoogleApiClient;
    private String PATH_DATA = "/falldata";
    private MessageSender dataSender;
    String TAG = "WatchMainActivity";
    private boolean listenerRegistered = false;


/*
This class is responsible for the android wear app.
The app should be able to:
-Run as a service so that the user does not need to keep the app open.
-Collect accelerometer data at a frequency of 32 ms. This should be done by either throwing a set number of samples away or by only sending a sample if we are at a interval of 32 ms. The latter option might be the best option.
-Send samples to the Android phone app. https://developer.android.com/training/wearables/data-layer/index.html
 */

@Override
protected void onCreate(Bundle savedInstanceState) //average delay 205.35 ms over 2150 samples
{
    super.onCreate(savedInstanceState);

    setContentView(R.layout.activity_main);
    TextView mTextView = (TextView) findViewById(R.id.title_text);

    // Enables Always-on
    setAmbientEnabled();

    if (null == mGoogleApiClient)
    {
        mGoogleApiClient = new GoogleApiClient.Builder(this)
                .addApi(Wearable.API)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .build();
        Log.v(TAG,"GoogleApiClient created");
    }

    if (!mGoogleApiClient.isConnected())
    {
        mGoogleApiClient.connect();
        Log.v(TAG, "Connecting to GoogleApiClient.");
    }

    final Button stop_button = findViewById(R.id.stop_button);
    final Button start_button = findViewById(R.id.start_button);

    start_button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            start();
        }
    });


    stop_button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            stop();
        }
    });


    dataSender = MessageSender.getInstance(this);
}

@Override
public void onSensorChanged(SensorEvent event) {

    values = event.values;              //changed to a global value
    dataSender.sendMessage(PATH_DATA, "" + values[0] + "," + values[1] + "," + values[2]);
}

@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {

    System.out.println("Accuracy changed. Does something need to change?");
}


@Override
public void onConnected(@Nullable Bundle bundle) {
    System.out.println("OnConnected has been called");
}

@Override
public void onConnectionSuspended(int i) {

}

@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) 
{

}

@Override
public void onMessageReceived(MessageEvent messageEvent) {
    System.out.println("Message received");
    Log.i(TAG, "Message received!");

    if(messageEvent.getPath().equals("/falldetected")) //a fall was detected for reals
    {
        System.out.println("Message received falldetected");
        //Create the new intent
        intentStuff();
    }
}

public void start()
{
    System.out.println("The START BUTTON has been clicked.");

    Wearable.MessageApi.addListener(mGoogleApiClient, this);

    mSensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
    accelerometer = mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
    boolean sensorRegistered = mSensorManager.registerListener(this, accelerometer, SensorManager.SENSOR_DELAY_GAME);
    Log.d("Sensor Status:", " Sensor registered: " + (sensorRegistered ? "yes" : "no"));
}

public void stop()
{
    mSensorManager.unregisterListener(this, accelerometer);
    Wearable.MessageApi.removeListener(mGoogleApiClient, this);

    mGoogleApiClient.disconnect();
}

public void intentStuff()
{
    Intent startIntent = new Intent("android.intent.action.FallOptions");
    //Pull up new activity
    this.startActivity(startIntent); //starting the activity with the new intent
}

}

我希望手表和手机能够相互发送消息，以便当任一设备接收到消息时，将调用onMessageReceived（），并且应将我作为测试所使用的打印语句打印到律师中。

但是，手表应在收到消息后没有打印声明。

GoogleApiClient未连接-手机未通过手表接收消息

0 个答案: