在CALayer中添加图像并居中

Question

I want to center the image inside a CALayer. Even the image size must be modified accordingly and color of image should also be tinted. The problem is Im not able to set the image size and even add color.

    //premium gradient
    let premiumViewLayer=CALayer()
    premiumViewLayer.bounds=CGRect(x:0, y:0, width:(getGradientWidth()), height:(LKView.bounds.height))
    premiumViewLayer.backgroundColor = UIColor.clear.cgColor

    let premiumimageViewLayer=CALayer()
    premiumimageViewLayer.frame = SSView.frame
    premiumimageViewLayer.contents=UIImage(named: "premium")?.cgImage
    premiumimageViewLayer.contentsGravity = kCAGravityCenter

    premiumViewLayer.addSublayer(premiumimageViewLayer)

I want to achieve something like below:

Answer 1

Try This one its working :::

  let premiumViewLayer=CALayer()
    premiumViewLayer.frame = CGRect(origin: CGPoint.zero, size: imgView.frame.size)//CGRect(x:0, y:0, width:375, height:333.5)
    premiumViewLayer.backgroundColor = UIColor(white: 1.0, alpha: 0.5).cgColor
    premiumViewLayer.contents=UIImage(named: "premium")?.cgImage
    premiumViewLayer.contentsGravity = kCAGravityCenter
    view(on which on want to add this layer).layer.addSublayer(premiumViewLayer)