ios tableviewcell footview 不跟着移动

#pragma  mark cell footView 不移动
- (void)scrollViewDidScroll:(UIScrollView *)scrollView{
CGFloat sectionHeaderHeight = 5;//设置你footer高度
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);
}
}