Created
May 19, 2014 15:47
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From project: https://github.com/emil10001/LowFreqLiveCard
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package com.feigdev.demo.app; | |
import android.app.PendingIntent; | |
import android.app.Service; | |
import android.content.Intent; | |
import android.os.AsyncTask; | |
import android.os.Handler; | |
import android.os.IBinder; | |
import android.util.Log; | |
import android.widget.RemoteViews; | |
import com.google.android.glass.timeline.LiveCard; | |
import java.security.NoSuchAlgorithmException; | |
import java.security.SecureRandom; | |
import java.util.Random; | |
public class LowFreqLiveCardService extends Service { | |
private static final String TAG = "LowFreqLiveCardService"; | |
private LiveCard mLiveCard; | |
private RemoteViews mLiveCardView; | |
private final Handler mHandler = new Handler(); | |
private static final Random random; | |
static { | |
Random tmpRandom; | |
try { | |
tmpRandom = SecureRandom.getInstance("SHA1PRNG"); | |
} catch (NoSuchAlgorithmException e) { | |
tmpRandom = new Random(); | |
} | |
random = tmpRandom; | |
} | |
@Override | |
public int onStartCommand(Intent intent, int flags, int startId) { | |
Log.d(TAG, "onStartCommand"); | |
if (mLiveCard == null) { | |
// Get an instance of a live card | |
mLiveCard = new LiveCard(this, TAG); | |
// Inflate a layout into a remote view | |
mLiveCardView = new RemoteViews(getPackageName(), | |
R.layout.hearty_layout); | |
// Set up initial RemoteViews values | |
mLiveCardView.setTextViewText(R.id.heart_rate, "?"); | |
Intent menuIntent = new Intent(this, MainActivity.class); | |
menuIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | | |
Intent.FLAG_ACTIVITY_CLEAR_TASK); | |
mLiveCard.setAction(PendingIntent.getActivity( | |
this, 0, menuIntent, 0)); | |
mLiveCard.setViews(mLiveCardView); | |
// Publish the live card | |
mLiveCard.publish(LiveCard.PublishMode.REVEAL); | |
Log.d(TAG, "mLiveCard.publish " + mLiveCard.isPublished()); | |
} else if (!mLiveCard.isPublished()) { | |
mLiveCard.publish(LiveCard.PublishMode.REVEAL); | |
} | |
new CardRefresher().execute(); | |
return START_STICKY; | |
} | |
@Override | |
public void onDestroy() { | |
Log.d(TAG, "onDestroy"); | |
if (mLiveCard != null && mLiveCard.isPublished()) { | |
//Stop the handler from queuing more Runnable jobs | |
mLiveCard.unpublish(); | |
mLiveCard = null; | |
} | |
super.onDestroy(); | |
} | |
private void notifyHeartRate(int heartRate) { | |
// Set up initial RemoteViews values | |
mLiveCardView.setTextViewText(R.id.heart_rate, String.valueOf(heartRate)); | |
mLiveCard.setViews(mLiveCardView); | |
} | |
@Override | |
public IBinder onBind(Intent intent) { | |
Log.d(TAG, "onBind"); | |
return null; | |
} | |
private class CardRefresher extends AsyncTask<Void, Void, Void> { | |
@Override | |
protected Void doInBackground(Void... params) { | |
for (int i=0; i < 10; i++){ | |
if (null == mLiveCard) | |
break; | |
notifyHeartRate(random.nextInt(40) + 50); | |
try { | |
Thread.sleep(3000); | |
} catch (InterruptedException e) { | |
Log.d(TAG, "couldn't sleep"); | |
} | |
} | |
return null; | |
} | |
} | |
} |
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