How to keep a round imageView round using auto layout?

Question

How do I turn a rectangular image view into a circular image view that can hold shape in auto layout without setting width and height restraints? Thereby allowing the imageV

Answer 1

I added custom IBInspectable cornerRadiusPercent, so you can do it without any code.

class RoundButton: UIButton {

    override var bounds: CGRect {
        didSet {
            updateCornerRadius()
        }
    }


    //private var cornerRadiusWatcher : CornerRadiusPercent?
    @IBInspectable var cornerRadiusPercent: CGFloat = 0 {

        didSet {
            updateCornerRadius()
        }
    }

    func updateCornerRadius()
    {
        layer.cornerRadius = bounds.height * cornerRadiusPercent
    }

}