Why is my android alarm manager firing instantly?

android alarmmanager android-appwidget android-pendingintent
mobibob picture mobibob · Jul 29, 2010 · Viewed 7.9k times · Source

I am following sample code for sending an update notification every 10'seconds. The code follows and it is in an UpdateService for an AppWidgetProvider. If I put a Thread.sleep(10*1000); I can see the expected behavior of my servicing loop. I obviously have something fundamentally wrong that is triggering immediately. It is supposed to be a PendingIntent of an alarm that will broadcast update to my listener.

long nextUpdate = 10*1000;
Log.d(TAG, "Requesting next update in " + nextUpdate + " msec." );

Intent updateIntent = new Intent(ACTION_UPDATE_ALL);
updateIntent.setClass(this, UpdateService.class);

PendingIntent pendingIntent = PendingIntent.getService(this, 0, updateIntent, 0);

// Schedule alarm, and force the device awake for this update
AlarmManager alarmManager = (AlarmManager)getBaseContext().getSystemService(Context.ALARM_SERVICE);
alarmManager.setRepeating(AlarmManager.ELAPSED_REALTIME, SystemClock.elapsedRealtime(), 
    nextUpdate, pendingIntent);

Answer

Falmarri picture Falmarri · Jul 29, 2010

AlarmManager.setRepeating is defined as public void setRepeating (int type, long triggerAtTime, long interval, PendingIntent operation) The 2nd argument is when it should be first called. You're telling it to start at SystemClock.elapsedRealtime(), which is now.

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