如何在ScrollView中的SwiftUI中创建网格视图？

import SwiftUI

struct ContentView: View {
    let columns = [
        GridItem(.flexible()),
        GridItem(.flexible()),
        GridItem(.flexible())
    ]
    
    var body: some View {
        ScrollView {
            LazyVGrid(columns: columns, spacing: 10) {
                ForEach(0..<20) { index in
                    Text("Item \(index)")
                        .frame(height: 100)
                        .background(Color.blue)
                        .cornerRadius(10)
                }
            }
            .padding()
        }
    }
}

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