Tutorial by Examples

Create a receiver. This class will receive the intent and handle it how you wish. public class AlarmReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { // Handle intent int reqCode = intent.getExtras().getInt(&...

If you want to cancel an alarm, and you don't have a reference to the original PendingIntent used to set the alarm, you need to recreate a PendingIntent exactly as it was when it was originally created. An Intent is considered equal by the AlarmManager: if their action, data, type, class, and ca...

With more and more battery optimizations being put into the Android system over time, the methods of the AlarmManager have also significantly changed (to allow for more lenient timing). However, for some applications it is still required to be as exact as possible on all Android versions. The follow...

Android 6 (API23) introduced Doze mode which interferes with AlarmManager. It uses certain maintenance windows to handle alarms, so even if you used setExactAndAllowWhileIdle() you cannot make sure that your alarm fires at the desired point of time. You can turn this behavior off for your app using...