方法一將 style 設置為 Grouped 静檬。這時所有的section header都會隨著scrollview滾動了鹦付。不過 grouped 和 plain 的樣式有輕微區(qū)別，切換樣式后也許需要重新調整UI
2献酗、重載scrollview的delegate方法
- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
CGFloat sectionHeaderHeight = 40;
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);
}
}
