iOS UITableView小技巧

UITableView的Group样式下顶部空白处理

在viewWillAppear里面添加如下代码：
//分组列表头部空白处理
CGRect frame = myTableView.tableHeaderView.frame;
frame.size.height = 0.1;
UIView *headerView = [[UIView alloc] initWithFrame:frame];
[myTableView setTableHeaderView:headerView];

UITableView的plain样式下，取消区头停滞效果

- (void)scrollViewDidScroll:(UIScrollView *)scrollView
{
    CGFloat sectionHeaderHeight = sectionHead.height;
    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);
    }
}