iOS - 获取窗口中视图的位置？
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iOS - Get location of a view in a window?
提问by aryaxt
I have a UIView that displays a popup after it's been clicked. The popup needs to be added to the main UIWindow to make sure that it goes on top of everything else.
我有一个 UIView，它在被点击后显示一个弹出窗口。需要将弹出窗口添加到主 UIWindow 以确保它位于其他所有内容之上。
I want the position of this popup to be relative to my UIView, so I need to know the relative location of my UIView in the window.
我希望这个弹出窗口的位置相对于我的 UIView，所以我需要知道我的 UIView 在窗口中的相对位置。
Question: How can I find the location of a UIView in a UIWindow when the UIView is not directly in the UIWindow (It's inside the view of my viewController)?
问题：当 UIView 不直接在 UIWindow 中（它在我的 viewController 的视图中）时，如何在 UIWindow 中找到 UIView 的位置？
回答by Magic Bullet Dave
Use can use the UIView method covertRect:toView to convert to the new co-ordinate space. I did something very similar:
使用可以使用 UIView 方法 covertRect:toView 转换到新的坐标空间。我做了一些非常相似的事情：
// Convert the co-ordinates of the view into the window co-ordinate space
CGRect newFrame = [self convertRect:self.bounds toView:nil];
// Add this view to the main window
[self.window addSubview:self];
self.frame = newFrame;
In my example, self is a view that is being removed from its superView and added to the window over the top of where it was. The nil parameter in the toView: means use the window rather than a specific view.
在我的示例中，self 是一个视图，它正在从它的 superView 中删除并添加到它所在位置的顶部的窗口中。toView: 中的 nil 参数表示使用窗口而不是特定视图。
Hope this helps,
希望这可以帮助，
Dave
戴夫
回答by Yunus Nedim Mehel
You can ask your .superviewto convert your originfor you for you
您可以要求您为您.superview转换origin您的
CGPoint originGlobal = [myView.superview convertPoint:myView.frame.origin
toView:nil];
回答by Craig
Does UIView's convertPoint:toView: not work? So:
UIView 的 convertPoint:toView: 不起作用吗？所以：
CGPoint windowPoint = [myView convertPoint:myView.bounds.origin toView:myWindow];
回答by Stoyan Berov
I needed to do this in Xamarin.iOS
我需要在Xamarin.iOS 中执行此操作
For anyone looking for a solution there, what eventually worked for me was:
对于在那里寻找解决方案的人来说，最终对我有用的是：
CGRect globalRect = smallView.ConvertRectToView(smallView.Bounds, rootView);
回答by soan saini
Below Xamarin.iOS Implementation Worked For Me.
下面的 Xamarin.iOS 实现对我有用。
CGRect GetRectAsPerWindow(UIView view)
{
var window = UIApplication.SharedApplication.KeyWindow;
return view.Superview.ConvertRectToView(view.Frame, window);
}
Pass in the view whose frame you want with respect to Window.
传入你想要的关于 Window 的框架的视图。
回答by WantToKnow
Swift 5 utility
Swift 5 实用程序
extension UIView {
var originOnWindow: CGPoint { return convert(CGPoint.zero, to: nil) }
}
Usage
用法
let positionOnWindow = view.originOnWindow
For UIScrollViewit is slightly different
对于UIScrollView它略有不同
extension UIScrollView {
var originOnWindow: CGPoint { return convert(contentOffset, to: nil) }
}
回答by ader
CGRect myFrame = self.superview.bounds;
