untiy 分页

       private int pagesize = 5;
        private int pageCount;
        private int pageIndex = 1;
        private int allCount = 36;

		public void ManagePager()
        {
            foreach (var item in cards)
            {
                Destroy(item);
            }
            cards.Clear();

            pageCount = allCount % pagesize > 0 ? allCount / pagesize + 1 : allCount / pagesize;

            totalPageNumber.text = pageCount.ToString();
            pageNumber.text = pageIndex.ToString();

            for (int i = (pageIndex - 1) * pagesize; i < (pageIndex * pagesize <= allCount ? pageIndex * pagesize : allCount); i++)
            {
                cards.Add(Instantiate(bussinessCardItem, cardItemParent));
            }

        }