我正在创建一个自定义警报可重用的修改器，将有不同数量的按钮取决于我需要的风格。无论如何，在我下面的示例代码，我已经删除了尽可能多的额外代码，我可以保持它的小和简单。
使用下面的代码，我可以显示警报，但单击"单击我"按钮不会消除警报。我觉得设置"isPresented"绑定变量的方式有问题，但无法找出SwiftUI的新特性。

自定义警报修饰符：

struct CustomAlertView: ViewModifier {
    var isPresented: Binding<Bool>

    init(isPresented: Binding<Bool>) {
        self.isPresented = isPresented
    }

    func body(content: Content) -> some View {
        content.overlay(alertContent())
    }

    @ViewBuilder
    private func alertContent() -> some View {
        GeometryReader { geometry in
            if self.isPresented {
                // Do something

                // Setting isPresented to false is not doing anything when button is clicked.
                Button(action: { self.isPresented.wrappedValue = false }) { 
                    Text("Click Me")
                }
            }
        }
    }
}

func customAlert(isPresented: Binding<Bool>) -> some View {
    return modifier(CustomAlertView(isPresented: isPresented))
}

查看和查看型号编码：

struct MyView: View {
    @ObservedObject var viewModel: CustomViewModel = CustomViewModel()
    
    var body: some View {
        VStack {
            switch viewModel.state {
            case .idle:
                Color.clear.onAppear(perform: { viewModel.doSomething() })
            case .showNewView:
                // Navigate
            }
        }.onAppear() {
        viewModel.state = .idle
        }.customAlert(isPresented: .constant(viewModel.showAlert))
    }
}

@MainActor
class CustomViewModel: ObservableObject {
    enum State {
        case idle
        case showNewView
    }
    
    @Published var state = State.idle
    @Published var showAlert = false
    
    func doSomething() {
        if failure {
            self.showAlert = true
        } else {
            self.state = .showNewView
        }
    }
}

我做错了什么，或者为什么我无法解除警报？
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