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androidalarmmanager

Delete specific ALARM from AlarmManger in Android

I am building a reminder app using alarmManger but I don't know how to delete a specific alarm.

AlarmManager manager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);

Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.set(Calendar.HOUR_OF_DAY, 10);
calendar.set(Calendar.MINUTE, 30);

Intent intent = new Intent(MainActivity.this, AlarmReceiver.class);
PendingIntent alarmIntent = PendingIntent.getBroadcast(getApplicationContext(), 0, intent, 0);
manager.set(AlarmManager.RTC_WAKEUP,calendar.getTimeInMillis(),pendingIntent);

The Receiver is a normal and simple Receiver.

My problem is that I want to edit/remove an alarm that has been added. I know conceptually how to remove an alarm, but I can't remove a specific alarm in alarmManger when several have been added.

Solution

  • by Id that you set in alarm manager you can access specific alarm, in your code: 

    AlarmManager manager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);

Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.set(Calendar.HOUR_OF_DAY, 10);
calendar.set(Calendar.MINUTE, 30);

Intent intent = new Intent(MainActivity.this, AlarmReceiver.class);

    at this line choose ID separate from each other , then you can get specific alarm by it's id 

    PendingIntent alarmIntent = PendingIntent.getBroadcast(getApplicationContext(), ID, intent, 0);
manager.set(AlarmManager.RTC_WAKEUP,calendar.getTimeInMillis(),pendingIntent);