- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
    if (scrollView == self.tableView)
    {
        CGFloat sectionHeaderHeight = 30; //區(qū)頭高度
        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);
        }
    }
}

這個(gè)方法存在一個(gè)弊端，就是當(dāng)表視圖存在導(dǎo)航條的時(shí)候，表視圖會(huì)被導(dǎo)航條遮蓋。所以需要添加如下代碼

- (void)viewDidAppear:(BOOL)animated
{
    self.navigationController.navigationBar.translucent = NO;
}