UIButton Customization

UIButtonExtension.swift

extension UIButton{
          func roundCorners(corners:UIRectCorner, radius: CGFloat){
                   let borderLayer = CAShapeLayer()
                   borderLayer.frame = self.layer.bounds
                   borderLayer.strokeColor = UIColor.green.cgColor
                   borderLayer.fillColor = UIColor.clear.cgColor
                   borderLayer.lineWidth = 10.5
                   let path = UIBezierPath(roundedRect: self.bounds,
                            byRoundingCorners: corners,
                            cornerRadii: CGSize(width: radius, height: radius))
                   borderLayer.path = path.cgPath
                   self.layer.addSublayer(borderLayer)
     }
}