如何在SwiftUI中使用UserDefaults保存选取器数据？

import SwiftUI
import Combine

class UserData: ObservableObject {
    @Published var selectedOption: String = UserDefaults.standard.string(forKey: "selectedOption") ?? "" {
        didSet {
            UserDefaults.standard.set(self.selectedOption, forKey: "selectedOption")
        }
    }
}

struct ContentView: View {
    @ObservedObject var userData = UserData()
    
    var body: some View {
        VStack {
            Picker("Options", selection: $userData.selectedOption) {
                Text("Option 1").tag("Option 1")
                Text("Option 2").tag("Option 2")
                Text("Option 3").tag("Option 3")
            }
            .pickerStyle(SegmentedPickerStyle())
            .padding()
            
            Text("Selected Option: \(userData.selectedOption)")
        }
    }
}