我正在从Api获取模型,它看起来像这样:
class Device : NSObject, Codable, NSCoding{
var deviceId : Int?
var driver : String?
var address : String?
var type : DeviceTypes? // Enum type
func encode(with coder: NSCoder) {
coder.encode(self.deviceId, forKey: "deviceId")
coder.encode(self.driver, forKey: "driver")
coder.encode(self.address, forKey: "address")
coder.encode(self.type, forKey: CodingKeys.type.rawValue)
}
required init?(coder: NSCoder) {
super.init()
self.deviceId = coder.decodeInteger(forKey: "deviceId")
self.driver = coder.decodeObject(forKey: "driver") as? String
self.address = coder.decodeObject(forKey: "address") as? String
self.type = coder.decodeObject(forKey: CodingKeys.type.rawValue) as? DeviceTypes
}
private enum CodingKeys : String, CodingKey{
case deviceId, address, type, deviceType
}
}
然后我在数组中添加了一些元素,并且可以正常工作,但是当我尝试使用NSKeyedArchiver对其进行存档时,它会抛出异常:
[____ SwiftValue encodeWithCoder:]:无法识别的选择器已发送到实例
DeviceTypes
enum DeviceTypes : Int, Codable{
case SYSTEM
case CE
case CZ
case ST
case KA
case CR
case EX
case DR
case KL
case WE
case WY
case WL
case TR
case LI
case BR = 30
case DC = 32
}
您的问题是NSCoding
仅适用于类类型。任何试图使DeviceTypes
符合NSCoding
都会导致错误
enum DeviceTypes : Int, Codable, NSCoding {
非类类型'DeviceTypes'不符合类协议'NSCoding'
一种解决方案是在enum
方法中从NSCoding
类型来回转换。
请注意,NSCoding
已软弃用NSSecureCoding
,因此您应该使用该一致性以避免将来的支持问题。
class Device : NSObject, NSSecureCoding {
static var supportsSecureCoding: Bool = true
var deviceId : Int?
var driver : String?
var address : String?
var type : DeviceTypes? // Enum type
func encode(with coder: NSCoder) {
coder.encode(self.deviceId, forKey: "deviceId")
coder.encode(self.driver, forKey: "driver")
coder.encode(self.address, forKey: "address")
coder.encode(self.type?.rawValue, forKey: "type")
}
required init?(coder: NSCoder) {
super.init()
self.deviceId = coder.decodeInteger(forKey: "deviceId")
self.driver = coder.decodeObject(forKey: "driver") as? String
self.address = coder.decodeObject(forKey: "address") as? String
let rawtype = coder.decodeInteger(forKey: "type")
self.type = DeviceTypes(rawValue: rawtype)
}
}
您尚未在Device
类中提供所有代码,因为您的帖子片段未按Codable
一致性进行编译,所以我无法猜测您的系统在JSON支持方面真正需要什么。