SwifUI中的生命周期:在离开NavigationView层次结构的子视图时运行代码

struct ContentView: View {
    @State private var isChildViewVisible = false
    
    var body: some View {
        NavigationView {
            VStack {
                Button("Show Child View") {
                    isChildViewVisible = true
                }
                .padding()
                
                if isChildViewVisible {
                    ChildView()
                        .onDisappear {
                            // 在离开子视图时运行代码
                            print("Child view is disappearing")
                            // 执行其他操作...
                        }
                }
            }
        }
    }
}

struct ChildView: View {
    var body: some View {
        Text("Child View")
    }
}