Is it possible to make a background with a color gradient ?

[captainhaddockfr35]

Hi,

Is it possible to make a background with a color gradient ? I tried by adding a layer :

public override func viewDidLoad() {
        super.viewDidLoad()

        let colorTop =  UIColor(red: 255.0/255.0, green: 149.0/255.0, blue: 0.0/255.0, alpha: 1.0).cgColor
        let colorBottom = UIColor(red: 255.0/255.0, green: 0/255.0, blue: 0/255.0, alpha: 1.0).cgColor
        let gradientLayer = CAGradientLayer()
        gradientLayer.colors = [colorTop, colorBottom]
        gradientLayer.locations = [0.0, 1.0]
        gradientLayer.frame = self.buttonBarView.bounds
        self.buttonBarView.layer.insertSublayer(gradientLayer, at: 0)
    }

but since the content size is larger than the screen size, when I scroll to the items on the right, the gradient does not expand.

Thanks