如何在Swift的CoreData模型中保存动态创建的UISwitch的更改状态？

// 步骤1：创建CoreData实体
class SwitchState: NSManagedObject {
    @NSManaged var isOn: Bool
}

// 步骤2：在CoreData模型中创建属性

// 步骤3：动态创建UISwitch并添加IBAction方法
@IBAction func switchValueChanged(_ sender: UISwitch) {
    // 步骤4：保存UISwitch状态到CoreData实体
    let context = persistentContainer.viewContext
    let switchState = SwitchState(context: context)
    switchState.isOn = sender.isOn
    
    do {
        try context.save()
    } catch {
        print("Failed to save switch state: \(error)")
    }
}

// 步骤5：读取UISwitch状态
func fetchSwitchState() -> Bool {
    var isOn = false
    
    let context = persistentContainer.viewContext
    let fetchRequest: NSFetchRequest<SwitchState> = SwitchState.fetchRequest()
    
    do {
        let switchStates = try context.fetch(fetchRequest)
        if let switchState = switchStates.first {
            isOn = switchState.isOn
        }
    } catch {
        print("Failed to fetch switch state: \(error)")
    }
    
    return isOn
}