如何根据SwiftUI中的输入更改TextField状态？

import SwiftUI

struct ContentView: View {
    @State private var text: String = ""

    var body: some View {
        VStack {
            TextField("请输入文本", text: $text)
                .textFieldStyle(RoundedBorderTextFieldStyle())
                .padding()
            
            Text("输入的文本是：\(text)")
                .padding()
        }
    }
}

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