不符合协议'NSCoding' - Swift 3 [英] Does not conform to protocol 'NSCoding' - Swift 3

问题描述

我看过几个类似我的问题;然而，这些都是关于快速2/1，我目前正在使用swift 3.我相信苹果已经稍微改变了。

  class Person：NSObject，NSCoding {
 
 var signature：UIImage 
 
 init（signature：UIImage）{
 self.signature = signature 
} 
 
需要方便的init（coder aDecoder：NSCoder）{
 let signature = aDecoder.decodeObject（forKey：signature）as！ UIImage 
 self.init（签名：签名）
} 
 
 func encodeWithCoder（aCoder：NSCoder）{
 aCoder.encode（signature，forKey：signature） 
} 
 
} 
  

你会注意到Swift 3如何迫使我使用所需的便利性init（而不是必需的init（或许这与它有关系） / p>

如何解决这个问题？谢谢！

解决方案

code> encode 在Swift 3中的方法已被重命名为

  func encode（with aCoder ：NSCoder）
  

当您获得不符合错误时，您可以轻松地找出哪些需要的方法缺少

• 按⌘B构建代码。


• 按⌘4显示问题导航员。


• 点击问题行前面的公开三角形。

I have seen several questions similar to mine; however, those are pertaining to swift 2/1 and I am currently using swift 3. I believe Apple has changed it slightly.

class Person: NSObject, NSCoding {

    var signature: UIImage

    init(signature: UIImage) {
        self.signature = signature
    }

    required convenience init(coder aDecoder: NSCoder) {
        let signature = aDecoder.decodeObject(forKey: "signature") as! UIImage
        self.init(signature: signature)
    }

    func encodeWithCoder(aCoder: NSCoder) {
        aCoder.encode(signature, forKey: "signature")
    }

}

You will notice how Swift 3 now forces me to use required convenience init( instead of required init(. Perhaps that has something to do with it.

How can I resolve this issue? Thanks!

解决方案

The encode method in Swift 3 has been renamed to

func encode(with aCoder: NSCoder) 

When you get the do not conform error you can easily find out which required methods are missing

• Press ⌘B to build the code.
• Press ⌘4 to show the issue navigator.
• Click on the disclosure triangle in front of the issue line.

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