ios – – [_ SwiftValue encodeWithCoder：]：发送到实例的无法识别的选择器

尝试使用NSCoder时出错

Player.swift：

class Player: NSObject,NSCoding {

    private var _playerName: String!
    private var _playerScore: Int!
    private var _playerColor: PlayerColor! //PlayerColor is an enum

    var playerName: String {
        get {
            return _playerName
        }
        set {
            _playerName = newValue
        }
    }

    var playerScore: Int {
        get {
            return _playerScore
        }
        set {
            _playerScore = newValue
        }
    }

    var playerColor: PlayerColor {
        get {
            return _playerColor
        }
        set {
            _playerColor = newValue
        }
    }

    init(playerName: String,playerScore: Int,playerColor: PlayerColor) {

        _playerName = playerName
        _playerScore = playerScore
        _playerColor = playerColor
    }

    required convenience init(coder aDecoder: NSCoder) {
        let name = aDecoder.decodeObject(forKey: "name") as! String
        let score = aDecoder.decodeInteger(forKey: "score")
        let color = aDecoder.decodeObject(forKey: "color") as! PlayerColor
        self.init(playerName: name,playerScore: score,playerColor: color)
    }

    func encode(with aCoder: NSCoder){
        aCoder.encode(playerName,forKey: "name")
        aCoder.encode(playerScore,forKey: "score")
        aCoder.encode(playerColor,forKey: "color")
    }

}

在PlayerStore.swift中：

// Storage Functions
func savePlayers(){
    let encodedData = NSKeyedArchiver.archivedData(withRootObject: _playerArray) // _playerarray is a [Player] the very object I want to store/retrieve at will
    defaults.set(encodedData,forKey: playerKeyForDefaults) //defaults is just var NSUserDefaults.standard
    defaults.synchronize()
}

func loadPlayers(){
    if let decoded = defaults.object(forKey: playerKeyForDefaults) as? NSData {
        let array = NSKeyedUnarchiver.unarchiveObject(with: decoded as Data) as! [Player]
        _playerArray = array
    }

}

解决方法

这是我实施的解决方案：

Player.swift：

import Foundation

    class Player: NSObject,NSCoding {

        private var name: String!
        private var score: Int!
        private var color: String!

        var playerName: String {
            get {
                return name
            }
            set {
                name = newValue
            }
        }

        var playerScore: Int {
            get {
                return score
            }
            set {
                score = newValue
            }
        }

        var playerColor: String {
            get {
                return color
            }
            set {
                color = newValue
            }
        }

        init(playerName: String,playerColor: String) {

            name = playerName
            score = playerScore
            color = playerColor
        }

        required convenience init(coder aDecoder: NSCoder) {
            let name = aDecoder.decodeObject(forKey: "name") as! String
            let score = aDecoder.decodeObject(forKey: "score") as! Int
            let color = aDecoder.decodeObject(forKey: "color") as! String
            self.init(playerName: name,playerColor: color)
        }

        func encode(with aCoder: NSCoder){
            aCoder.encode(name,forKey: "name")
            aCoder.encode(score,forKey: "score")
            aCoder.encode(color,forKey: "color")
        }

    }

PlayerStore.swift：

func savePlayers(){
    let encodedData = NSKeyedArchiver.archivedData(withRootObject: _playerArray)
    defaults.set(encodedData,forKey: playerKeyForDefaults)
}

func loadPlayers(){
    if let decoded = defaults.object(forKey: playerKeyForDefaults) as? NSData {
        let array = NSKeyedUnarchiver.unarchiveObject(with: decoded as Data) as! [Player]
        _playerArray = array
    }

}