Android: How to use AlarmManager

Question

I need to trigger a block of code after 20 minutes from the AlarmManager being set.

Can someone show me sample code on how to use an AlarmManager<

Answer 1

Some sample code when you want to call a service from the Alarmmanager:

PendingIntent pi;
AlarmManager mgr;
mgr = (AlarmManager)ctx.getSystemService(Context.ALARM_SERVICE);
Intent i = new Intent(DataCollectionActivity.this, HUJIDataCollectionService.class);    
pi = PendingIntent.getService(DataCollectionActivity.this, 0, i, 0);
mgr.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP, SystemClock.elapsedRealtime() , 1000, pi);

You dont have to ask userpermissions.