IOS 去除 tableView 中 headerView 吸附头部，不整体滚动

//去掉 UItableview headerview 黏性(sticky)
- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
if (scrollView == self.tableViewOrder)
{
CGFloat sectionHeaderHeight = 60; //sectionHeaderHeight
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);
}
}
}