UITableView不让section悬浮

方法一、

- (void)scrollViewDidScroll:(UIScrollView *)scrollView {

   CGFloat sectionHeaderHeight = 100;

   if (scrollView.contentOffset.y<=sectionHeaderHeight&&scrollView.contentOffset.y>=0) {

        scrollView.contentInset =UIEdgeInsetsMake(-scrollView.contentOffset.y,0, 0, 0);

    }else if (scrollView.contentOffset.y>=sectionHeaderHeight) {

        scrollView.contentInset =UIEdgeInsetsMake(-sectionHeaderHeight, 0, 0, 0);

    }

}

方法二、

设置tableView的类型为Grouped即可