Set Background Gradient on Button in Swift

Question

I have no idea how to set the background gradient on a button (without making the background gradient an image). This is so different from Android.

Here\'s a class I

Answer 1

   class ButtonGradient : UIButton {
        override func layoutSubviews() {

            let layer : CAGradientLayer = CAGradientLayer()
            layer.frame.size = self.frame.size
            layer.frame.origin = CGPoint(x: 0, y: 0)

            //   layer.cornerRadius = CGFloat(frame.width / 20)
            let color0 = UIColor(red:255/255, green:122/255, blue:0/255, alpha:1.0).cgColor
            let color1 = UIColor(red:255/255, green:176/255, blue: 0/255, alpha:1.0).cgColor
            let color2 = UIColor(red:250/255, green:98/255, blue: 44/255, alpha:1.0).cgColor
            layer.locations = [0.5, 1.0]
            layer.startPoint = CGPoint(x: 0.0, y: 0.5)
            layer.endPoint = CGPoint(x: 0.5, y: 0.5)
            layer.colors = [color2,color0,color1]

            self.layer.insertSublayer(layer, at: 0)
        }
    }

After that directly assign "ButtonGredient" class to particular button in Storyboard.