-[_SwiftValue encodeWithCoder:]: unrecognized selector sent to instance - ios

Question

Getting error when trying to utilize NSCoder
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")
}
}
in PlayerStore.swift:
// 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
}
}

Answer 1

Here's the solution I implemented:
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, playerScore: Int, 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, playerScore: score, 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
}
}

Answer 2

You can also use this approach using Enum rawValue. It might help you to archivedData and unarchiveObject a complete model object.
Color Enum With Hex value:
enum PlayerColor: String {
case red = "#FF0000"
case silver = "#C0C0C0"
case gray = "#808080"
case black = "#000000"
var description: String {
return self.rawValue
}
}
import Foundation
class Player: NSObject, NSCoding {
private var name: String!
private var score: Int!
private var color: PlayerColor!
init(playerName: String, playerScore: Int, playerColor: PlayerColor) {
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
if let value = aDecoder.decodeObject(forKey: "color") as? String{
color = PlayerColor(rawValue: value)
}
self.init(playerName: name, playerScore: score, playerColor: color)
}
func encode(with aCoder: NSCoder){
aCoder.encode(name, forKey: "name")
aCoder.encode(score, forKey: "score")
let value = color!.description
aCoder.encode(value, forKey: "color")
}
}