Disable sound from NotificationChannel

Question

Today I started targeting API 26 which forced me to use Notification Channels.

My problem is that now on each new notification (including updates to it) an annoying

Answer 1

First you need to set

importance = NotificationManager.IMPORTANCE_LOW;

then

Notification n = builder.setPriority(Notification.DEFAULT_ALL).build();
n.defaults = 0;
n.defaults |= Notification.DEFAULT_VIBRATE;