分页查询群成员

String groupID = "group_123";
int filter = 0; // 0 表示查询全部成员
int offset = 0;
int count = 50;

OpenIMClient.getInstance().groupManager.getGroupMemberList(
    new OnBase<List<GroupMembersInfo>>() {
        @Override
        public void onSuccess(List<GroupMembersInfo> members) {
            // members 为当前页成员列表
        }

        @Override
        public void onError(int code, String error) {
            // 处理查询失败
        }
    },
    groupID,
    filter,
    offset,
    count
);