使用swiftUI如何仅在textField处于编辑模式时添加datePicker？

import SwiftUI

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

    var body: some View {
        VStack {
            TextField("Enter text", text: $text)
                .onTapGesture {
                    showDatePicker = true
                }
            
            if showDatePicker {
                DatePicker("Select Date", selection: .constant(Date()), displayedComponents: .date)
                    .datePickerStyle(WheelDatePickerStyle())
                    .labelsHidden()
            }
        }
    }
}

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