How can I set UIButton image, which Image is round shape with border

Question

How can I set UIButton image, which Image is round shape with border I write related code but image not displaying in proper round shape.. Here is my code..

Answer 1

    func roundedImageView(imgView: UIImageView, borderWidth: Float, borderColor: UIColor)
{
    imgView.layer.cornerRadius = imgView.frame.size.width / 2
    imgView.clipsToBounds = true
    imgView.layer.borderWidth = CGFloat(borderWidth)
    imgView.layer.borderColor = borderColor.cgColor
}