get UIButton inside an UIScrollView absolute screen location

Question

It may be a dumb question, but I can't find an answer to this ...

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.

How can I find x and y relative to screen of the button pressed?

Thanks in advance.

score 11 · Accepted Answer · edited May 23 '17 at 12:02

11

Your objection was right- instead, use

- (CGPoint)convertPoint:(CGPoint)point toView:(UIView *)view

from UIView, like

[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

edited May 23 '17 at 12:02

Community

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answered Apr 11 '11 at 19:29

Rob Lourens

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If I scroll horizontally the UIScrollView, I may have button.frame.origin.x = 1017 or something, so your example will not be correct. – CristiC Apr 11 '11 at 19:31

score 7 · Answer 2 · answered Dec 25 '18 at 14:23

7

For swift:

let pointXY:CGPoint = (button.superview?.convert(button.frame.origin, to: nil))!
print("button pointXY: \(pointXY.debugDescription)")

answered Dec 25 '18 at 14:23

lenooh

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Saved my lot of time, I'm finding this for the last 3 hours, Thank u so much – steveSarsawa Dec 01 '20 at 15:06

get UIButton inside an UIScrollView absolute screen location

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