Monitor User Data Changes

By setting up a user data change listener, you can monitor changes to user information, group information, or group member user information (nickname).

Set Up a User Data Change Listener

Within the application lifecycle, after initialization but before connection, call the following method to set up a global information change listener UserDataObserver.

RongUserInfoManager.getInstance().addUserDataObserver(userDataObserver);

UserDataObserver provides the following callback methods:

• onUserUpdate(): This method is called when user information changes.
• onGroupUpdate(): This method is called when group information changes.
• onGroupUserInfoUpdate: This method is called when group member user information (nickname) changes.

The detailed definition is as follows:

    /**
     * User information change observer, all callbacks are on the UI thread
     */
    public interface UserDataObserver {
        /**
         * Callback method when user information changes.
         * @param info The updated user information.
         */
        void onUserUpdate(UserInfo info);

        /**
         * Callback method when group information changes.
         * @param group The updated group information.
         */
        void onGroupUpdate(Group group);

        /**
         * Callback method when group member user information (nickname) changes.
         * @param groupUserInfo The updated group nickname information.
         */
        void onGroupUserInfoUpdate(GroupUserInfo groupUserInfo);
    }

Remove the User Data Change Listener

You can remove the previously set listener using the following method.

RongUserInfoManager.getInstance().removeUserDataObserver(userDataObserver);