在 appdelegate 添加
if (@available(iOS 11.0, *)) {
[UIScrollView appearance].contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
[UITableView appearance].contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
[UICollectionView appearance].contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
[UIWebView appearance].scrollView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
//底下这三句是解决mjrefresh 上拉偏移的bug
[UITableView appearance].estimatedRowHeight = 0;
[UITableView appearance].estimatedSectionHeaderHeight = 0;
[UITableView appearance].estimatedSectionFooterHeight = 0;
} else {
// Fallback on earlier versions
}
