Get subscribed user online status

OpenIMClient.getInstance().userInfoManager.getSubscribeOnlineUsersStatus(
    new OnBase<List<UsersOnlineStatus>>() {
        @Override
        public void onSuccess(List<UsersOnlineStatus> states) {
            // Use states to display online status.
        }

        @Override
        public void onError(int code, String error) {
            // Handle the error.
        }
    }
);