AlarmManager didn't work in oreo and later - alarmmanager

Question

I used lots of method from alarmManager like
setRepeating, setInexactRepeating(),setExactAndAllowWhileIdle(),
also this too
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { manager.setAlarmClock(AlarmManager.AlarmClockInfo(c.timeInMillis , null),intentAlarm) }
everything is working well when app is running or in recent, but when i close the app it didn't do anything
I also give manifest permission
<uses-permission android:name="android.permission.SCHEDULE_EXACT_ALARM" />
<uses-permission android:name="com.android.alarm.permission.SET_ALARM" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
I look into this stackoverflow question and it didn't work for me
and also from this github project
Please help me i stuck for 3 days and didn't get solution that trigger my alarm when app is closed
here is my full code of implemantation
fun setAlarm(c: Calendar, context: Context, tick:Long, dayChoosen:ArrayList<String>) {
val manager = context.getSystemService(ALARM_SERVICE) as AlarmManager
//Notification Broadcast intent
val intentAlarm = Intent(context, MyReceiver::class.java).let {
it.putExtra("daysChoosenArrayList", dayChoosen)
it.putExtra("id", dayChoosen)
PendingIntent.getBroadcast(context, tick.toInt(), it, PendingIntent.FLAG_ONE_SHOT)
}
//alarm fire next day if this condition is not statisfied
if (c.before(Calendar.getInstance())) {
c.add(Calendar.DATE, 1)
}
//set alarm
manager.setInexactRepeating(AlarmManager.RTC_WAKEUP, c.timeInMillis, 24*60*60*1000,intentAlarm)
}
and broadcast receiver
class MyReceiver: BroadcastReceiver() {
override fun onReceive(p0: Context?, p1: Intent?) {
notification(p0!!,"nono")
}
}
notifcation()
fun notification(context: Context, text:String ){
// pendingIntent is an intent for future use i.e after
// the notification is clicked, this intent will come into action
val intent = Intent(context, MainActivity::class.java)
// FLAG_UPDATE_CURRENT specifies that if a previous
// PendingIntent already exists, then the current one
// will update it with the latest intent
// 0 is the request code, using it later with the
// same method again will get back the same pending
// intent for future reference
// intent passed here is to our afterNotification class
val pendingIntent = PendingIntent.getActivity(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT)
// checking if android version is greater than oreo(API 26) or not
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
notificationChannel = NotificationChannel(channelId, description, NotificationManager.IMPORTANCE_HIGH)
notificationChannel.enableLights(true)
notificationChannel.lightColor = Color.GREEN
notificationChannel.enableVibration(false)
notificationManager.createNotificationChannel(notificationChannel)
builder = Notification.Builder(context, channelId)
.setContentText(text)
.setSmallIcon(R.drawable.ic_launcher_background)
.setLargeIcon(BitmapFactory.decodeResource(context.resources, R.drawable.ic_launcher_background))
.setContentIntent(pendingIntent)
} else {
builder = Notification.Builder(context)
.setContentText("heheh")
.setSmallIcon(R.drawable.ic_launcher_background)
.setLargeIcon(BitmapFactory.decodeResource(context.resources, R.drawable.ic_launcher_background))
.setContentIntent(pendingIntent)
}
notificationManager.notify(1234, builder.build())
}