解决自定义tableviewHeaderView和tableviewFooterView悬浮

图片发自App

图片发自App

方法来自： http://www.jianshu.com/p/71c9d0954d2e

• (void)scrollViewDidScroll:(UIScrollView *)scrollView{
  //headerView
  if (scrollView == _tableView) {
  CGFloat sectionHeaderHeight = 36;
  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);
  }
  }

  //footerView
  if (scrollView == _tableView) {
  //去掉UItableview的section的footerview黏性
  CGFloat sectionFooterHeight = 44;
  if (scrollView.contentOffset.y<=sectionFooterHeight && scrollView.contentOffset.y>=0) {
  scrollView.contentInset = UIEdgeInsetsMake(0, 0, -sectionFooterHeight, 0);
  } else if (scrollView.contentOffset.y>=sectionFooterHeight) {
  //footerview 一直隐藏在底部。
  scrollView.contentInset = UIEdgeInsetsMake(0, 0, 0, 0);
  }
  }
  }