Question

I am stuck at a Local to Global Point issue in Objective C ViewController base Application

I have one ScrollView as a SubView of the ViewController which has Around 13 to 15 UIButtons as a SubView at a Time there are only 3 UIButton which are in the View of the ScrollView.

What i want is to get the CGPoint(Global) of the UIButton which is a subView of ScrollView but not the local CGpoint inside the ScrollView.

Is there a way to get the Local CGPoint to be Converted to Global CGPoint.

Thanks Guyz
KK

Answer 1

say you have a UIButton myButton, try:

CGPoint globalPoint = [[[UIApplication sharedApplication] keyWindow] convertPoint:CGPointZero fromView:myButton];

and to convert back

CGPoint localPoint = [myButton convertPoint:globalPoint fromView:[[UIApplication sharedApplication] keyWindow]];