How to insert a sublayer in swift?

Question

I am creating a view and adding a gradient layer to it.

I have this:

import UIKit
import QuartzCore


let rect : CGRect = CGRectMake(0,0,320,100)

var vista : UIView = init(frame: rect)

let gradient : CAGradientLayer = CAGradientLayer()
gradient.frame = vista.bounds

let cor1 = UIColor.blackColor().CGColor
let cor2 = UIColor.whiteColor().CGColor

let arrayColors = [cor1, cor2]

gradient.colors = arrayColors

now I have to do this

[view.layer insertSublayer:gradient atIndex:0];

How do I do that in swift?

Answer 1

You can use the following snippet

view.layer.insertSublayer(yourLayer, atIndex: yourIndex)

Answer 2

Have you tried this?

view.layer.insertSublayer(gradient, atIndex:0)

Note that whenever you're editing Swift code, you can command-click on a symbol from the frameworks to see a Swift-ified version of that API's header file. Also, the documentation online and in Xcode shows Swift syntax for all the APIs it covers.