//项目要求tableView滚动到底部就自动加载下一页，UITableView继承自UIScrollView 所以可以在
//scrollViewDidEndDecelerating这个方法中进行判断操作

 1 -(void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{

 if (scrollView == myScrollView) {

         CGPoint offset = myScrollView.contentOffset;

         CGRect bounds = myScrollView.bounds;

         CGSize size = myScrollView.contentSize;

         UIEdgeInsets inset = myScrollView.contentInset;

         float y = offset.y + bounds.size.height - inset.bottom;

         float h = size.height;

         if((int)y == (int)h ) { //滑动到底部

            //执行加载下一页

         }

     }

 }