Scroll Essential Android 2.3 Manual de usuario descargar pdf (Pagina 37)

Android Wear Docs, Release 1.1

object that contains a golf course hole number and the distances to the front, middle, and back pin locations.

The receiving side can use the path to identify the origin of the data.

// Connect to the data layer when the Activity starts

@Override

protected void onStart() {

super.onStart();

googleClient.connect();

}

// Send a data object when the data layer connection is successful.

@Override

public void onConnected(Bundle connectionHint) {

String WEARABLE_DATA_PATH = "/wearable_data";

// Create a DataMap object and send it to the data layer

DataMap dataMap = new DataMap();

dataMap.putLong("time", new Date().getTime());

dataMap.putString("hole", "1");

dataMap.putString("front", "250");

dataMap.putString("middle", "260");

dataMap.putString("back", "270");

//Requires a new thread to avoid blocking the UI

new SendToDataLayerThread(WEARABLE_DATA_PATH, dataMap).start();

}

// Disconnect from the data layer when the Activity stops

@Override

protected void onStop() {

if (null != googleClient && googleClient.isConnected()) {

googleClient.disconnect();

}

super.onStop();

}

// Placeholders for required connection callbacks

@Override

public void onConnectionSuspended(int cause) { }

@Override

public void onConnectionFailed(ConnectionResult connectionResult) { }

3. Deﬁne a class that extends the Thread class and implements a method that sends your data object to all nodes

currently connected to the data layer. This task can block the main UI thread, so it must run in a new thread.

This can be an inner class.

class SendToDataLayerThread extends Thread {

String path;

DataMap dataMap;

// Constructor for sending data objects to the data layer

SendToDataLayerThread(String p, DataMap data) {

path = p;

dataMap = data;

}

public void run() {

7.1. First Wearable Data 33

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