致命错误:使用未实现的初始化程序"init(realm:schema :)"

问题描述

• 昨天，我为我的项目(用Swift编写)将Realm框架从0.91.5更新为了0.92.0.我发现Realm团队已经将Swift部分和Objective-C部分与之前的整个Cocoa Framework分开了，该团队还更改了语法.而且我已经将代码更正为最新的Realm语法，但是init()仍然存在一些问题.

• Yesterday, I updated my Realm framework from 0.91.5 to 0.92.0 for my project (written in Swift). I found that the Realm Team had already separated Swift part and Objective-C part from the previous entire Cocoa Framework, the team also change the syntax. And I already corrected my code as the latest Realm syntax, but I still got some trouble with init().

• 编译器抛出错误:fatal error: use of unimplemented initializer init(realm:schema:) for CardModel.
• 问题是以前版本的Realm并未发生此错误.
• 我将MultiPeer Connectivity框架用于项目，这意味着我需要Encode和Decode进行数据交换.
• 我尝试将其他init()更改或添加到CardModel，但是没有用.

• The Compiler thrown the error: fatal error: use of unimplemented initializer init(realm:schema:) for CardModel.
• The thing is this error did not occur with the previous version of Realm.
• I used MultiPeer Connectivity framework for project, which means I need to Encode and Decode for exchanging of data.
• I tried to change or add other init() to CardModel, but it did not work.

import RealmSwift

class CardModel: Object {
dynamic var cardID: String = ""
dynamic var firstName: String = ""
dynamic var lastName: String = ""
dynamic var userImage = NSData()
dynamic var status: String = ""
dynamic var cardType: Int = 1
dynamic var cardDate = NSDate()

override init() {
    super.init()
}

init(coder aDecoder: NSCoder) {
    super.init()
    self.userImage = aDecoder.decodeObjectForKey("userImage") as! NSData
    self.cardID = aDecoder.decodeObjectForKey("cardID") as! String
    self.firstName = aDecoder.decodeObjectForKey("firstName") as! String
    self.lastName = aDecoder.decodeObjectForKey("lastName") as! String
    self.status = aDecoder.decodeObjectForKey("status") as! String
    self.cardType = aDecoder.decodeObjectForKey("cardType") as! Int
    self.cardDate = aDecoder.decodeObjectForKey("cardDate") as! NSDate
}

func encodeWithCoder(aCoder: NSCoder) {
    aCoder.encodeObject(self.userImage, forKey: "userImage")
    aCoder.encodeObject(self.cardID, forKey: "cardID")
    aCoder.encodeObject(self.firstName, forKey: "firstName")
    aCoder.encodeObject(self.lastName, forKey: "lastName")
    aCoder.encodeObject(self.status, forKey: "status")
    aCoder.encodeObject(self.cardType, forKey: "cardType")
    aCoder.encodeObject(self.cardDate, forKey: "cardDate")
  }
}

请教我如何解决此问题.

Please teach me how to solve this problem.

非常感谢您的指导和时间.

A big appreciation for your guide and time.

Ethan Joe

Ethan Joe

推荐答案

前几天，我遇到了相同的问题:

I ran in the same problem the other day:

基本上，您不应该创建"init"方法，但是可以创建"convenience init"方法.在这种情况下，您无法调用super.init()，但会调用诸如self.init()

Basically you should not create "init" methods but you can create "convenience init" methods. In that case you can't call super.init() but you call something like self.init()

因此，在上述情况下，您必须删除重写init()，而另一个init可以是:

so in your case above you have to remove override init() and the other init can be:

convenience required init(coder aDecoder: NSCoder) {
    self.init()
    self.userImage = aDecoder.decodeObjectForKey("userImage") as! NSData
    self.cardID = aDecoder.decodeObjectForKey("cardID") as! String
    self.firstName = aDecoder.decodeObjectForKey("firstName") as! String
    self.lastName = aDecoder.decodeObjectForKey("lastName") as! String
    self.status = aDecoder.decodeObjectForKey("status") as! String
    self.cardType = aDecoder.decodeObjectForKey("cardType") as! Int
    self.cardDate = aDecoder.decodeObjectForKey("cardDate") as! NSDate
}

更多信息:> https://github.com/realm/realm-cocoa/issues/1849

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