createNotificationChannel

Creates a notification channel that notifications can be posted to. This can also be used to restore a deleted channel and to update an existing channel's name, description, group, and/or importance.

The importance of an existing channel will only be changed if the new importance is lower than the current value and the user has not altered any settings on this channel.

The group of an existing channel will only be changed if the channel does not already belong to a group. All other fields are ignored for channels that already exist. It doesn't do anything on older SDKs which don't support Notification Channels.

Parameters