去掉UItableview headerview黏性(sticky)

 

    // 去掉UItableview headerview黏性(sticky)
    - (void)scrollViewDidScroll:(UIScrollView *)scrollView
    {
        CGFloat sectionHeaderHeight = 40;
        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);
        }
    }