如何在 UIScrollView 的上下文中找到 UIView 的框架？
我试图放置一个 UIPopoverController 来在点击 UIButton 时显示。但是，UIButton 放置在 UIScrollView 内，因此其框架会偏移滚动量。
有没有一种简单的方法可以找到出现在屏幕上下文中的视图框架？或者我只需要在 UIButton 框架和 UIScrollView 的 contentOffset 之间进行减法？
谢谢！
I'm trying to place a UIPopoverController to display when a UIButton is tapped. However, the UIButton is placed within a UIScrollView and so its frame is offset by the scroll amount.
Is there an easy way of finding out a view's frame as it appears in the context of the screen? Or do I just need to do a subtraction between the UIButton frame and the contentOffset of the UIScrollView?
Thanks!
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如果您使用
- (void)presentPopoverFromRect:(CGRect)rect inView:(UIView *)view allowedArrowDirections:(UIPopoverArrowDirection)arrowDirectionsAnimated:(BOOL)animated那么您已经指定了您所在的视图想要呈现来自。只需在UIButton中显示从 0,0 0,0 开始的弹出框即可。If you are using
- (void)presentPopoverFromRect:(CGRect)rect inView:(UIView *)view permittedArrowDirections:(UIPopoverArrowDirection)arrowDirections animated:(BOOL)animatedthen you are already specifying the view that you are wanting to present from. Just present the popover from 0,0 0,0 in yourUIButton.