Swift UIView extension to add rounded corners and a drop shadow to a view, avoiding the clipsToBounds problem

UIViewExtensions.swift

import Foundation
import UIKit



public extension UIView {
	
	func roundCornerWithShadow(cornerRadius: CGFloat, shadowRadius: CGFloat, offsetX: CGFloat, offsetY: CGFloat, colour: UIColor, opacity: Float) {
		
		self.clipsToBounds = false

		let layer = self.layer
		layer.masksToBounds = false
		layer.cornerRadius = cornerRadius
		layer.shadowOffset = CGSize(width: offsetX, height: offsetY);
		layer.shadowColor = colour.cgColor
		layer.shadowRadius = shadowRadius
		layer.shadowOpacity = opacity
		layer.shadowPath = UIBezierPath(roundedRect: layer.bounds, cornerRadius: layer.cornerRadius).cgPath
		
		let bColour = self.backgroundColor
		self.backgroundColor = nil
		layer.backgroundColor = bColour?.cgColor
		
	}
	
}