如何使用swiftui中的搜索栏筛选列表

import SwiftUI

struct ContentView: View {
    @State private var searchText = ""
    
    let items = ["Apple", "Banana", "Orange", "Grapes", "Watermelon"]
    
    var filteredItems: [String] {
        if searchText.isEmpty {
            return items
        } else {
            return items.filter { $0.localizedCaseInsensitiveContains(searchText) }
        }
    }
    
    var body: some View {
        VStack {
            TextField("Search", text: $searchText)
                .padding()
                .background(Color(.systemGray5))
                .cornerRadius(8)
                .padding()
            
            List(filteredItems, id: \.self) { item in
                Text(item)
            }
        }
    }
}

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