如何为SwiftUI动态构建并显示视图？

import SwiftUI

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

    var body: some View {
        VStack {
            Text("Hello, SwiftUI!")
                .font(.largeTitle)
                .padding()

            Button(action: {
                self.showButton.toggle()
            }) {
                Text("Toggle Button")
                    .foregroundColor(.white)
                    .background(Color.blue)
                    .cornerRadius(10)
            }
            .padding()

            if showButton {
                Button(action: {
                    print("Button tapped!")
                }) {
                    Text("Dynamic Button")
                        .foregroundColor(.white)
                        .background(Color.green)
                        .cornerRadius(10)
                }
                .padding()
            }
        }
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}