class ViewController: UIViewController {
private var gradientLayer:CAGradientLayer = CAGradientLayer()
override func viewDidLoad() {
super.viewDidLoad()
self.gradientLayer.frame = self.view.bounds
self.gradientLayer.colors = [UIColor .clear.cgColor,UIColor.black.cgColor]
self.gradientLayer.opacity = 1
gradientLayer.locations = [0,1]
gradientLayer.startPoint = CGPoint(x: 0,y: 0.5)
gradientLayer.endPoint = CGPoint(x: 1,y: 0.5)
view.layer.addSublayer(self.gradientLayer)
}
}
var gradientLayer2 = CAGradientLayer()
gradientLayer2.startPoint = CGPointMake(0.5,1.0)
gradientLayer2.endPoint = CGPointMake(0.5,0.0)
gradientLayer2.frame = CGRectMake(0,bounds.size.width,bounds.size.height)
gradientLayer2.colors = [UIColor.yellowColor().CGColor,UIColor.blueColor().CGColor,UIColor.greenColor().CGColor]
self.view.layer.addSublayer(gradientLayer2)
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