Apply gradient to UILabel bgCOlor iOS swift

 Problem:

I want to set the gradient color as background for UILabel.How can i achieve that?

Solution:

You can write an extension function as like below

extension UILabel {

    

    func applyGradient(colors: [CGColor]) {

        let gradientLayer = CAGradientLayer()

        gradientLayer.colors = colors

        gradientLayer.startPoint = CGPoint(x: 0.5, y: 0)

        gradientLayer.endPoint = CGPoint(x: 0.5, y: 1)

        gradientLayer.frame = CGRect(x: 0, y: 0, width: self.bounds.size.width, height: self.bounds.size.height)

        let renderer = UIGraphicsImageRenderer(size: self.bounds.size) // Specify the size you need

        let gradientImage = renderer.image { context in

            gradientLayer.render(in: context.cgContext)

        }

        self.backgroundColor = UIColor(patternImage: gradientImage)

    }    

}

You can call the extension as like below

            mycell.lbl.applyGradient(colors: [UIColor().colorWithHexString(hexString: "#f4f4f4").cgColor, UIColor().colorWithHexString(hexString: "#b6b6b6").cgColor])

colowith hexstring extension as like below

extension UIColor {

    func colorWithHexString(hexString: String) -> UIColor {

        var colorString = hexString.trimmingCharacters(in: .whitespacesAndNewlines)

        colorString = colorString.replacingOccurrences(of: "#", with: "").uppercased()

        let alpha: CGFloat = 1.0

        let red: CGFloat = colorComponentFrom(colorString: colorString, start: 0, length: 2)

        let green: CGFloat = colorComponentFrom(colorString: colorString, start: 2, length: 2)

        let blue: CGFloat = colorComponentFrom(colorString: colorString, start: 4, length: 2)

        

        let color = UIColor(red: red, green: green, blue: blue, alpha: alpha)

        return color

    }

}