notification

Notification switch

NotificationManagerCompat.from(this).areNotificationsEnabled()

channel switch

NotificationManager.IMPORTANCE_NONE == NotificationManagerCompat.from(this).getNotificationChannel(CHANNEL_ID)?.importance

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https://stackoverflow.com/questions/71159130/custom-android-notification-sound

1. Android 13 and above
   granted permission and channel is null
   granted permission and channel open

2. Android 8 and above - below Android 13
   notfication switch open
   channel switch open

3. Blow Android 8
   notification switch open

Channel Sound

Since Android Oreo / 8 the Notificationsound is coming from the Channel and can only be set the first time you add the channel via your channel.setSound(). If you want to change it later on you need to delete the channel and then re-add it to the system. The user will be warned about that behaviour though (App deleted channels X amount of times).

Custom Android notification sound - Stack Overflow