在切换按钮中使用绑定时出错：“无法将'CALayer‘类型的值转换为’SwiftUI.MaskLayer‘”

import SwiftUI

struct CustomToggle: UIViewRepresentable {
    @Binding var isOn: Bool

    func makeUIView(context: Context) -> UISwitch {
        let toggle = UISwitch()
        toggle.addTarget(context.coordinator, action: #selector(Coordinator.valueChanged(_:)), for: .valueChanged)
        return toggle
    }

    func updateUIView(_ uiView: UISwitch, context: Context) {
        uiView.isOn = isOn
    }

    func makeCoordinator() -> Coordinator {
        Coordinator(self)
    }

    class Coordinator: NSObject {
        let parent: CustomToggle

        init(_ toggle: CustomToggle) {
            parent = toggle
        }

        @objc func valueChanged(_ sender: UISwitch) {
            parent.isOn = sender.isOn

            // 在这里可以使用CALayer来实现自定义的动画效果
            let animation = CABasicAnimation(keyPath: "opacity")
            animation.fromValue = sender.isOn ? 0.0 : 1.0
            animation.toValue = sender.isOn ? 1.0 : 0.0
            animation.duration = 0.3
            sender.layer.add(animation, forKey: "opacityAnimation")
        }
    }
}

struct ContentView: View {
    @State private var isToggleOn = false

    var body: some View {
        VStack {
            CustomToggle(isOn: $isToggleOn)
                .padding()
            Text(isToggleOn ? "开启" : "关闭")
        }
    }
}