【问题】tableView的每组的头部不不能滚动的解决方案

group模式的解决方案

- (void)scrollViewDidScroll:(UIScrollView*)scrollView
{
if (scrollView == self.tableView) {
CGFloat sectionHeaderHeight = HeaderHeight;
if (scrollView.contentOffset.y < sectionHeaderHeight && scrollView.contentOffset.y >= - HeaderHeight) {
scrollView.contentInset = UIEdgeInsetsMake(-scrollView.contentOffset.y, 0, 0, 0);
}
else if (scrollView.contentOffset.y >= sectionHeaderHeight) {
scrollView.contentInset = UIEdgeInsetsMake(-sectionHeaderHeight, 0, 0, 0);
}
}
}

plain模式的解决方案

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

CGFloat sectionHeaderHeight = 30;

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);

}

}