第一次内容显示时，滚动视图居中并填充内容[SwiftUI]

import SwiftUI

struct ContentView: View {
    var body: some View {
        ScrollView {
            VStack {
                ForEach(1...10, id: \.self) { index in
                    Text("Item \(index)")
                        .font(.title)
                        .padding()
                }
            }
            .frame(maxWidth: .infinity, maxHeight: .infinity)
            .alignmentGuide(.center) { $0[VerticalAlignment.center] }
        }
    }
}

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