SwiftUI:如何在动态列表或LazyVStack中获取视图框架

import SwiftUI

struct ContentView: View {
    var body: some View {
        ScrollView {
            LazyVStack {
                ForEach(0..<10) { index in
                    GeometryReader { geometry in
                        Text("Item \(index)")
                            .frame(width: geometry.size.width, height: 50)
                            .background(Color.blue)
                    }
                }
            }
        }
    }
}

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