Unbekannter Selektor gesendet an Klasse (Singleton)

Question

Ich habe ein paar verwandte Themen zu dieser Frage gefunden, aber ich verstehe nicht, wie die dort vorgestellten Lösungen auf eine Singleton-Klasse anwendbar sind.

Wenn mein app startet, rufe ich gamestate.shardInstance() in applicationDidBecomeActive aber es stürzt ab sofort mit dem gleichen Fehler jedes Mal: ​​

2017-03-22 11:09:09.102 project-mars[46108:28079112] +[project_mars.gameState encodeWithCoder:]: unrecognized selector sent to class 0x103670e60 2017-03-22 11:09:09.107 project-mars[46108:28079112] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '+[project_mars.gameState encodeWithCoder:]: unrecognized selector sent to class 0x103670e60'

Kann jemand bitte helfen Sie mir zu verstehen, was genau in diesen Fehlern passiert und wie etwas reparieren? Vielen Dank!

class gameState: NSObject, NSCoding { 

var GameSettings:gameSettings //Structure that stores all the game settings 
var PlayerStats:gameStatistics  //Structure that stores all game stats 
var GameBoard:gameBoard  //Contains the information of the gameboard 

private static var Instance: gameState = { 
    let instance = gameState.loadgameState() 
    //Closure for configuration 
    return instance! 
}() 

private override init(){ 
    self.GameSettings = gameSettings() 
    self.PlayerStats = gameStatistics() 
    self.GameBoard = gameBoard() 
    super.init() 
} 

class func sharedInstance() -> gameState{ 
    return gameState.Instance 
} 

required init?(coder aDecoder: NSCoder) { 
    self.GameSettings = (aDecoder.decodeObject(forKey: "GameSettings") as? gameSettings)! 
    self.PlayerStats = (aDecoder.decodeObject(forKey: "PlayerStats") as? gameStatistics)! 
    self.GameBoard = (aDecoder.decodeObject(forKey: "GameBoard") as? gameBoard)! 
} 
func encode(with aCoder: NSCoder) { 
    aCoder.encode(gameState.sharedInstance().GameSettings, forKey: "GameSettings") 
    aCoder.encode(gameState.sharedInstance().PlayerStats, forKey: "PlayerStats") 
    aCoder.encode(gameState.sharedInstance().GameBoard, forKey: "GameBoard") 
} 
class func loadgameState() ->gameState? { 
    let path = gameState.getFilePath() 
    print("PATH: \(path) \n") 
    if gameState.fileExistsAtPath(path: path){ 
     if let rawData = NSData(contentsOfFile: path) { 
      /// do we get serialized data back from the attempted path? 
      /// if so, unarchive it into an AnyObject, and then convert to a GameData object 
      if(rawData.length != 0){ 
       if let data = NSKeyedUnarchiver.unarchiveObject(with: rawData as Data) as? gameState { 
        return data 
       } 
      } 
     } 
     return gameState() 
    }else{ 
     return gameState() 
    } 
} 

Answer 1

class gameState { 

private var Score = "" 

static let sharedInstance : gameState = { 
     let instance = gameState() 
     return instance 
    }() 


func setScore(aScore : int) 
    { 
     Score = aScore 
    } 

func getScore() --> int 
    { 
     return Score 
    } 


} 



//once need to call func setScore 


    gameState.sharedInstance.setScore(aScore: 10) 
    gameState.sharedInstance.getScore() 

Answer 2

Ich denke, man sollte die lokale Instanz, ohne zu rufen, um die Singleton hier verwenden können. Sie sind bereits in der Singleton-Instanz

func encode(with aCoder: NSCoder) { 
    aCoder.encode(gameState.GameSettings, forKey: "GameSettings") 
    aCoder.encode(gameState.PlayerStats, forKey: "PlayerStats") 
    aCoder.encode(gameState.GameBoard, forKey: "GameBoard") 
} 

Bitte teilen sich die gameState.loadgameState() statische Methode - meine Vermutung ist etwas anderes dort geschieht.