AlarmManager + Notification Guide - Precise Scheduling in Android

AlarmManager + Notification Guide setExactAndAllowWhileIdle val alarmManager = context . getSystemService < AlarmManager >() val intent = Intent ( context , AlarmReceiver :: class . java ) val pendingIntent = PendingIntent . getBroadcast ( context , 0 , intent , PendingIntent . FLAG_UPDATE_CURRENT or PendingIntent . FLAG_IMMUTABLE ) alarmManager ?. setExactAndAllowWhileIdle ( AlarmManager . RTC_WAKEUP , System . currentTimeMillis () + 60000 , pendingIntent ) BroadcastReceiver Notification class AlarmReceiver : BroadcastReceiver () { override fun onReceive ( context : Context , intent : Intent ) { val notification = NotificationCompat . Builder ( context , "CHANNEL_ID" ) . setContentTitle ( "Alarm!" ) . setSmallIcon ( R . drawable . ic_alarm ) . build () NotificationManagerCompat . from ( context ) . notify ( 1 , notification ) } } BOOT_COMPLETED Restore class BootReceiver : BroadcastReceiver () { override fun onReceive ( context : Context , intent : Intent ) { if ( intent . action == I