- (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);
? ? }
}
