SwiftUI显示带延迟的自定义视图

import SwiftUI

struct DelayedView: View {
    @State private var isShowing = false
    
    var body: some View {
        VStack {
            if isShowing {
                Text("Delayed View")
                    .font(.largeTitle)
                    .foregroundColor(.blue)
                    .transition(.scale)
            }
        }
        .onAppear {
            DispatchQueue.main.asyncAfter(deadline: .now() + 2) {
                withAnimation {
                    self.isShowing = true
                }
            }
        }
    }
}

struct ContentView: View {
    var body: some View {
        VStack {
            Text("Hello, SwiftUI!")
                .font(.title)
            
            DelayedView()
                .padding()
        }
    }
}

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