AlarmManager alarmManager = (AlarmManager) appContext.getSystemService(Context.ALARM_SERVICE);
Intent alarmIntent = new Intent(appContext, WakeUpReceiver.class);
PendingIntent alarmPIntent = PendingIntent.getBroadcast(appContext, 0, alarmIntent, 0);
long trigger = System.currentTimeMillis() + 120_000;
alarmManager.setExactAndAllowWhileIdle(AlarmManager.RTC_WAKEUP, trigger, alarmPIntent);