查询已订阅用户状态

OpenIMClient.getInstance().userInfoManager.getSubscribeOnlineUsersStatus(
    new OnBase<List<UsersOnlineStatus>>() {
        @Override
        public void onSuccess(List<UsersOnlineStatus> states) {
            mergeOnlineStates(states);
        }

        @Override
        public void onError(int code, String error) {
            recordStatusQueryFailure(code, error);
        }
    }
);