SwiftUI -如何在进行搜索时获取列表的选定索引？

struct SearchView: View {
    @State private var searchText = ""
    @State private var selectedIndex = 0
    
    let listItems = ["Item 1", "Item 2", "Item 3", "Item 4", "Item 5"]
    
    var body: some View {
        VStack {
            TextField("Search", text: $searchText)
                .textFieldStyle(RoundedBorderTextFieldStyle())
                .padding()
            
            List(selection: $selectedIndex) {
                ForEach(0..<listItems.count) { index in
                    Text(listItems[index])
                }
            }
        }
    }
}