channel Importance
notification channel importance. Must be one of
android.app.NotificationManager#IMPORTANCE_NONE
android.app.NotificationManager#IMPORTANCE_LOW
android.app.NotificationManager#IMPORTANCE_DEFAULT
android.app.NotificationManager#IMPORTANCE_HIGH
android.app.NotificationManager#IMPORTANCE_MAX
Default is android.app.NotificationManager#IMPORTANCE_HIGH
Since
5.0.0