Creating an irregular UIButton in Swift where transparent parts are not tappable

Question

I am making a pie chart where each sector is a separate button with a background image, but UIButton has a rectangular shape and all the buttons overlap. Is there a way to m

Answer 1

You can use UIBezierPath or CGPath to define your pie chart sections and use their containsPoint: or CGPathContainsPoint to detect touch

Answer 2

As I'm concerned, may be the CAShapeLayer is better way to achieve the pie chart. By doing that, you can use

[layer hitTest:] 

method to deal with the touch action.