image disappears when styling class to make a round image

Question

class RoundImage: UIImageView {

    override func awakeFromNib() {
        super.awakeFromNib()
        setupView()
    }

     ...

    func setupView() {
        self         


        

Answer 1

When this code gets run the view hasn't been sized yet, so the width is incorrect. Try putting a listener on frame:

override var frame : CGRect {
    didSet {
        layer.cornerRadius = frame.size.width / 2
    }
}