我有一堂课

class Player {

    var name = ""

    func encodeWithCoder(encoder: NSCoder) {
        encoder.encodeObject(name)
    }

    func initWithCoder(decoder: NSCoder) -> Player {
        self.name = decoder.decodeObjectForKey("name") as String
        return self
    }

    init(coder aDecoder: NSCoder!) {
        self.name = aDecoder.decodeObjectForKey("name") as String
    }

    init(name: String) {
        self.name = name
    }
}

我想序列化并保存为用户默认值。

首先，我不确定如何正确编写编码器和解码器。因此，对于初始化，我编写了两种方法。

当我尝试执行此代码时：

func saveUserData() {
    let player1 = Player(name: "player1")
    let myEncodedObject = NSKeyedArchiver.archivedDataWithRootObject(player1)
    NSUserDefaults.standardUserDefaults().setObject(myEncodedObject, forKey: "player")
}

应用程序崩溃，我收到此消息：

*** NSForwarding: warning: object 0xebf0000 of class '_TtC6GameOn6Player' does not implement methodSignatureForSelector: -- trouble ahead

我做错了什么？