ios - UISearchBar 底线

Question

如何删除 UITableViewController 中的 UISearchBar 底线？

也可以应用 Swift 解决方案。

这是我的 VC 代码:

NavigationController.NavigationBar.PrefersLargeTitles = true;
NavigationController.NavigationItem.LargeTitleDisplayMode =  UINavigationItemLargeTitleDisplayMode.Automatic;
NavigationItem.HidesSearchBarWhenScrolling = false;
var searchController = new UISearchController(searchResultsController: null);
NavigationItem.SearchController = searchController;
NavigationItem.SearchController.DefinesPresentationContext = true;
NavigationItem.SearchController.DimsBackgroundDuringPresentation = false;

对于AppDeletage.cs

UINavigationBar.Appearance.Translucent = false;
UINavigationBar.Appearance.ShadowImage = new UIImage();

我尝试了几乎所有在 Internet 上找到的解决方案。

不工作下一个解决方案:

UISearchBar.Appearance.BackgroundImage = null;
UISearchBar.Appearance.BackgroundColor= UIColor.Clear;

---

NavigationItem.SearchController.Layer.BorderWidth = 0
NavigationItem.SearchController.Layer.BorderColor = UIColor.White.CGColor

---

NavigationItem.SearchController.SearchBar.ClipsToBounds = true;

Answer 1

解决方法:

public override void ViewWillLayoutSubviews()
{
    base.ViewWillLayoutSubviews();
    ((UIImageView) NavigationItem.SearchController.SearchBar.Superview?.Subviews.First().Subviews.First()).Bounds = CGRect.Null;
}