带有多个阴影的 UILabel

Question

我正在寻找向 UILabel 添加多个阴影的解决方案。 不是针对整个视图框架，而是仅针对文本内容，因为它会在此代码中显示

label.layer.shadowColor = UIColor.black.cgColor
label.layer1.shadowOffset = CGSize(width: 1.5, height: 4)
label.layer1.shadowOpacity = 0.5
label.layer1.shadowRadius = 2

因此，如果我使用阴影配置创建几层 CALayer 类型。 但它看起来不像第一个样本 - 有一个阴影。 问题看起来像 shadowsPath。 我需要向 UILabel 添加 3-4 个阴影

不是我看起来的机器人

我的代码是这个

extension CALayer {
func addShadows(
    x: CGFloat,
    y: CGFloat,
    blur: CGFloat,
    spread: CGFloat,
    color: UIColor,
    opacity: Float
) {
    shadowColor = color.cgColor
    shadowOpacity = opacity
    shadowOffset = CGSize(width: x, height: y)
    shadowRadius = blur / 2.0
    if spread == 0 {
        shadowPath = nil
    } else {
        let dx = -spread
        let rect = bounds.insetBy(dx: dx, dy: dx)
        shadowPath = UIBezierPath(rect: rect).cgPath
    }
    masksToBounds = false
}}
extension UIView {
func addMultipleShadows(
    from config: (x: CGFloat, y: CGFloat, blur: CGFloat, spread: CGFloat, shadowColor: UIColor, opacity: Float), backgroundColor: UIColor

) {
        let shadowLayer = CALayer()
        shadowLayer.addShadows(x: config.x, y: config.y, blur: config.blur, spread: config.spread, color: config.shadowColor, opacity: config.opacity)
    
        self.layer.insertSublayer(shadowLayer, at: 0)
    }
    self.layer.sublayers?.forEach({ sublayer in
        sublayer.shadowPath = UIBezierPath(rect: self.bounds).cgPath
    })
}}
override func viewDidLayoutSubviews() {
    super.viewDidLayoutSubviews()
    myLabelWithShadow.addMultipleShadows(from:
        (0.63, 13.18, 11, 0, UIColor.red, 0.115), backgroundColor: .clear)
}