原理就是进行偏移放到navigationBar底部
- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
CGFloat sectionHeaderHeight = kPixToRealH(48);
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);
}
}
