To receive information about events related to users connected to the Sendbird server, add a user event handler with its unique user-defined ID by calling
If you want to stay informed of changes related to users and notify users' client apps of these changes, define and register multiple user event handlers to each view controller.
To add or remove
onTotalUnreadMessageCountUpdated(), visit this page and contact us on the Sendbird Dashboard.
|Method||Invoked when||Notified devices|
A user has read messages in the joined group channels and there is an update on the total number of the user's unread messages.
The user's devices with running client apps. The devices will be notified with the total number of unread messages along with a collection of the number of unread messages by custom channel type.
The following code shows a full set of supported event callbacks with their parameters and how to add a user event handler to the unique
The following code shows how to remove the user event handler.