Alarm Manager cancel alarm not work correctly(After Reboot) I cancel my alarm, it's work(notification stop to arriving), but when I reboot my phone, service restart and notification arriving instead I cancel it. In manifest : android:name="android.intent.action.BOOT_COMPLETED", and uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" AlarmService class AlarmService(private val context : Context) { private val alarmManager: AlarmManager? = context.getSystemService(Context.ALARM_SERVICE) as AlarmManager? fun...