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我正在尝试将彩虹般的闪光动画应用于 UILabel 但不知道从哪里开始，我已设法将彩虹渐变颜色应用于 UILabel 但动画部分仍然存在。请帮助我们在以下链接中实现结果：-

视频链接

以下是我尝试过的代码：-

let hueColors = stride(from: 0, to: 1, by: 0.1).map({ UIColor(hue: $0, saturation: 1, brightness: 1, alpha: 1.0).cgColor })
    
    override func viewDidLoad() {
        super.viewDidLoad()
 
        self.lblDisplayTitleRecommendedWallet.text = "Recommended Wallet".localized
        self.lblDisplayTitleRecommendedWallet.gradientColors = self.hueColors

    }

class GradientLabel: UILabel {
    var gradientColors: [CGColor] = []

    override func drawText(in rect: CGRect) {
        if let gradientColor = drawGradientColor(in: rect, colors: gradientColors) {
            self.textColor = gradientColor
        }
        super.drawText(in: rect)
    }

    private func drawGradientColor(in rect: CGRect, colors: [CGColor]) -> UIColor? {
        let currentContext = UIGraphicsGetCurrentContext()
        currentContext?.saveGState()
        defer { currentContext?.restoreGState() }

        let size = rect.size
        UIGraphicsBeginImageContextWithOptions(size, false, 0)
        guard let gradient = CGGradient(colorsSpace: CGColorSpaceCreateDeviceRGB(),
                                        colors: colors as CFArray,
                                        locations: nil) else { return nil }

        let context = UIGraphicsGetCurrentContext()
        context?.drawLinearGradient(gradient,
                                    start: CGPoint.zero,
                                    end: CGPoint(x: size.width, y: 0),
                                    options: [])
        let gradientImage = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()
        guard let image = gradientImage else { return nil }
        return UIColor(patternImage: image)
    }
}
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