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    <p>Call the <code>UpdateService.class</code> within your <code>MainActivity.class</code> . </p> <p><code>startService(new Intent(MainActivity.this, UpdateService.class));</code></p> <p><strong>UpdateService.class</strong></p> <pre><code>public class UpdateService extends Service { BroadcastReceiver mReceiver; public static int countOn = 0; public static int countOff = 0; @Override public void onCreate() { super.onCreate(); // register receiver that handles screen on and screen off logic Log.i("UpdateService", "Started"); IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_ON); filter.addAction(Intent.ACTION_SCREEN_OFF); filter.addAction(Intent.ACTION_ANSWER); mReceiver = new MyReceiver(); registerReceiver(mReceiver, filter); } @Override public void onDestroy() { unregisterReceiver(mReceiver); Log.i("onDestroy Reciever", "Called"); super.onDestroy(); } @Override public int onStartCommand(Intent intent, int flags, int startId) { // TODO Auto-generated method stub boolean screenOn = intent.getBooleanExtra("screen_state", false); if (!screenOn) { Log.i("screenON", "Called"); Log.i("viaService", "CountOn =" + countOn); Toast.makeText(getApplicationContext(), "Awake", Toast.LENGTH_LONG) .show(); } else { Log.i("screenOFF", "Called"); Log.i("viaService", "CountOff =" + countOff); } return START_STICKY; } @Override public IBinder onBind(Intent intent) { // TODO Auto-generated method stub return null; } } </code></pre> <p><strong>Receiver class</strong></p> <pre><code>public class MyReceiver extends BroadcastReceiver { private boolean screenOff; @Override public void onReceive(Context context, Intent intent) { if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) { screenOff = true; // Log.i("via Receiver","Normal ScreenOFF" ); } else if (intent.getAction().equals(Intent.ACTION_SCREEN_ON)) { screenOff = false; } else if(intent.getAction().equals(Intent.ACTION_ANSWER)) { } Intent i = new Intent(context, UpdateService.class); i.putExtra("screen_state", screenOff); context.startService(i); } } </code></pre>
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