xcode 在 UIScrollView 绝对屏幕位置内获取 UIButton
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get UIButton inside an UIScrollView absolute screen location
提问by CristiC
It may be a dumb question, but I can't find an answer to this ...
这可能是一个愚蠢的问题，但我找不到答案......
I have an UIScrollView and inside a number of UIButtons. When I press a button, I want to know the screen location of the button. If I use button.frame it gives me the position inside UIScrollView, which is normal.
我有一个 UIScrollView 和一些 UIButtons。当我按下按钮时，我想知道按钮的屏幕位置。如果我使用 button.frame 它会给我 UIScrollView 中的位置，这是正常的。
How can I find x and y relative to screen of the button pressed?
如何找到相对于按下按钮的屏幕的 x 和 y？
Thanks in advance.
提前致谢。
回答by Rob Lourens
Your objection was right- instead, use
你的反对是正确的 - 相反，使用
- (CGPoint)convertPoint:(CGPoint)point toView:(UIView *)view
from UIView, like
来自 UIView，比如
[button.superview convertPoint:button.frame.origin toView:nil];
Not tested, but I believe that should work. Also see iPhone - Get Position of UIView within entire UIWindow
未经测试，但我认为应该可行。另请参阅iPhone - 在整个 UIWindow 中获取 UIView 的位置
回答by lenooh
For swift:
对于快速：
let pointXY:CGPoint = (button.superview?.convert(button.frame.origin, to: nil))!
print("button pointXY: \(pointXY.debugDescription)")
