Enums 在展开可选值错误时获取nil-在Swift中保存枚举值时
我有以下事件模型:Enums 在展开可选值错误时获取nil-在Swift中保存枚举值时,enums,swift2,nscoder,Enums,Swift2,Nscoder,我有以下事件模型: class Event: NSObject, NSCoding { var name: String var category: Category enum Category: String { case Call = "Call" case Coaching = "Coaching" } } 当用户更新其对类别枚举的选择时,它会崩溃,错误为:致命错误:在展开可选值时意外发现nil。 然而,当我打印“所选类别”时,我得到了正确的回答:“呼
class Event: NSObject, NSCoding {
var name: String
var category: Category
enum Category: String {
case Call = "Call"
case Coaching = "Coaching"
}
}
当用户更新其对类别枚举的选择时,它会崩溃,错误为:致命错误:在展开可选值时意外发现nil。
然而,当我打印“所选类别”时,我得到了正确的回答:“呼叫。”
在将选择字符串保存为枚举选项时,我是否遗漏了什么?提前感谢大家的时间
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if saveButton === sender {
let name = eventNameTextField.text ?? ""
let category = eventCategoryLabel.text!
if let cat = Event.Category(rawValue:category) {
print("selected category: \(cat)")
event = Event(name: name, category: cat)
}
}
}