Android Oreo notification keep making Sound even if I do not set sound. On Older version, works perfectly

Question

So I am making my app compatible with Oreo and facing issue with notification.

I added notification channel according to documentation and everything is working smoo

Answer 1

My scene is the first time there is a sound, and the update notification does not require a sound.

I use this setOnlyAlertOnce() method

Reference: https://developer.android.com/training/notify-user/build-notification#Updating

Test pass version 26