channelImportance
NotificationChannel.importance for the channel that posted this. This is the user-settable "how much do I care" signal that dominates on O+. -1 when the channel can't be resolved (older device, unknown channel).
NotificationChannel.importance for the channel that posted this. This is the user-settable "how much do I care" signal that dominates on O+. -1 when the channel can't be resolved (older device, unknown channel).