Swift 快速错误“；类型'；预订数据模型&x27；不符合协议'；可解码'&引用；

我想让我的应用程序的一部分离线，因为我的客户要求它。我一直在绞尽脑汁使我的结构可编码，这样我就可以将数据保存到用户默认值，但我总是遇到这个错误

类型“BookingDataModel”不符合协议“Decodable”

这是我的预订数据：

struct BookingDataModel: Codable {

    static var shared = BookingDataModel()

    var collaps = false
    var _id = ""
    var userId = ""
    var venderName = ""
    var created_at = ""
    var transaction_id = ""
    var payment_method = ""
    var updated_at = ""
    var booking_confirmed = false
    var booking_status = ""
    var payment_status = false
    var type = ""
    var isCanceledRequest: Bool?

    var flight: [FlightBookingDataModel]?
    var newFlight: (departure: [FlightBookingDataModel], return: [FlightBookingDataModel])?
    var event: HotelBookingDataModel?
    var hotel: NewHotelBookingDataModel?//HotelBookingDataModel?

    var isAxaPolicy = false
    var relationshipId = ""
    var passengers = [UsersModel]()
    var total = 0.0
    var tacCoinDiscount: Int?
    var couponDiscount: Int?
    var afterDiscountAmount: Int?

     func getBookingDataModel(arr: NSArray, type: String) -> [BookingDataModel] {
    // save data from API
    }
    }

起初我认为我的其他情态动词是不可编码的，所以我让它们都可编码，它仍然会抛出同样的错误 以下是FlightBookingDataModal：

struct FlightBookingDataModel: Codable {

    static var shared = FlightBookingDataModel()

    var pnrData = PNRDataModel()
    var src_name = ""
    var dst_name = ""
    var srcCode = ""
    var dstCode = ""

    var atime_utc = String()
    var dtime_utc = String()
    var atime = String()
    var dtime = String()

    var flight_no = ""
    var checkin = ""
    var price = 0.0
    var airLineName = ""
    var eticket_link = ""
    var invoice = ""
    var isReturnFlight = false

    func getFlightBookigDataModel(dict: NSDictionary) -> [FlightBookingDataModel] {
    // Save data from API
    }
    }

PNR模式：

class PNRDataModel: Codable  {
  var src = ""
  var dst = ""
  var iata = ""
  var pnr = ""
  }

HotelBookingDataModel：

struct HotelBookingDataModel: Codable {

    var cityName = ""
    var name = ""
    var address = ""
    var startOfServiceTime = ""
    var endOfServiceTime = ""
    var aetherReference = ""
    var provider = ""
    var reference = ""
    var price = 0.0
    var date = ""
    var reservationId = ""
    }

新建HotelBookingDataModel：

struct NewHotelBookingDataModel: Codable {
    var name = ""
    var address = ""
    var cityName = ""
    var price = 0.0
    var reference = ""
    var provider = "" //not found in new response
    var startOfServiceTime = ""
    var endOfServiceTime = ""
    var aetherReference = ""
    }

---

如果有人能告诉我为什么这不起作用，那将对我有很大帮助。我只想将[BookingDataModal]脱机保存一段有限的时间，直到用户重新联机。

错误原因是

BookingDataModel

中的属性

newFlight

---

Codable

不支持元组。

存在

UsersModel

。它也必须符合

Codable

。在处理Codable时，不要为属性指定默认值（顺便说一句，这是一种糟糕的做法）。不要在Swift中使用

NS…

集合类型。嗨，瓦迪安，UsersModal也符合Codable，我只是忘了在细节中发布它。我不知道我哪里做错了。谢谢你的提示，我对iOS developermnt还不太熟悉，可以使用一些指针