set background color to label swift - swift

Question

i hava a problem, i am tryinf to set background color to label, but it is not working
This is how i set label
private var imageLbel: UILabel = {
let label = UILabel()
label.textColor = .white
label.font = UIFont(name: "Arial Rounded MT Bold", size: 25)
label.textAlignment = .center
label.backgroundColor = GradientColor.setGradient()
label.numberOfLines = 1
return label
}()
This is class for gradient
class GradientColor {
static func setGradient(uiView: UIView) -> UIColor {
let colorTop = UIColor.orange
let colorBottom = UIColor.systemOrange
let gradientLayer = CAGradientLayer()
gradientLayer.colors = [colorTop, colorBottom]
gradientLayer.locations = [0.0, 1.0]
gradientLayer.startPoint = CGPoint(x: 0.0, y: 0.0)
gradientLayer.endPoint = CGPoint(x: 1.0, y: 1.0)
gradientLayer.frame = uiView.bounds
uiView.layer.insertSublayer(gradientLayer, at: 0)
return gradientLayer
}
}

Answer 1

The backgroundColor property accepts a value of type UIColor to be assigned, but your implementation of the function setGradient(uiView:) is not returning a value with the correct type. Also, you are calling setGradient() without passing the uiView argument required. I don't think your code even compiles correctly.
The function setGradient(uiView:) appears to be creating a CAGradientLayer instance and inserting it as a sublayer of the input uiView. I do not think returning a UIColor is required.
I suggest removing the line label.backgroundColor = GradientColor.setGradient(). Then, remove -> UIColor from the signature of setGradient(uiView:) so that it doesn't return anything, and remove return gradientLayer.
After that, somewhere after the label is added to the view hierarchy, call setGradient(uiView:) passing it imageLbel. Maybe in viewDidLoad() like this:
override viewDidLoad() {
super.viewDidLoad()
GradientColor.setGradient(uiView: imageLbel)
}