如何使用SwiftUI在ScrollView中选择项目？

import SwiftUI

struct ContentView: View {
    @State private var selectedItems: [String] = []
    let items = ["Item 1", "Item 2", "Item 3", "Item 4", "Item 5"]

    var body: some View {
        ScrollView {
            VStack(spacing: 10) {
                ForEach(items, id: \.self) { item in
                    Button(action: {
                        self.toggleSelection(item)
                    }) {
                        HStack {
                            Text(item)
                            Spacer()
                            if self.selectedItems.contains(item) {
                                Image(systemName: "checkmark")
                            }
                        }
                    }
                    .padding()
                    .background(Color.gray.opacity(0.2))
                    .cornerRadius(10)
                }
            }
            .padding()
        }
    }

    func toggleSelection(_ item: String) {
        if selectedItems.contains(item) {
            selectedItems.removeAll { $0 == item }
        } else {
            selectedItems.append(item)
        }
    }
}

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