使用SwiftUI在UserDefaults中保存来自多个TextField的字符串

import SwiftUI
import Combine

class UserData: ObservableObject {
    @Published var string1: String = ""
    @Published var string2: String = ""
    // 添加其他需要保存的字符串属性
}

struct ContentView: View {
    @ObservedObject var userData = UserData()

    var body: some View {
        VStack {
            TextField("String 1", text: $userData.string1)
            TextField("String 2", text: $userData.string2)
            // 添加其他TextField
        }
    }
}

struct ContentView: View {
    @ObservedObject var userData = UserData()

    init() {
        if let string1 = UserDefaults.standard.string(forKey: "String1") {
            userData.string1 = string1
        }
        if let string2 = UserDefaults.standard.string(forKey: "String2") {
            userData.string2 = string2
        }
        // 恢复其他字符串属性
    }

    var body: some View {
        VStack {
            TextField("String 1", text: $userData.string1)
            TextField("String 2", text: $userData.string2)
            // 添加其他TextField
        }
    }
}

struct ContentView: View {
    @ObservedObject var userData = UserData()

    var body: some View {
        VStack {
            TextField("String 1", text: $userData.string1)
            TextField("String 2", text: $userData.string2)
            // 添加其他TextField
        }
        .onDisappear {
            UserDefaults.standard.set(userData.string1, forKey: "String1")
            UserDefaults.standard.set(userData.string2, forKey: "String2")
            // 保存其他字符串属性
        }
    }
}