致命错误:使用未实现的初始化器'init(realm:schema:)'

My Issue:

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().
昨天，我更新了我的领域框架，从0.91.5到0.92.0。我发现Realm团队已经将Swift部分和Objective-C部分从之前的整个Cocoa框架中分离出来，团队也改变了语法。我已经将代码更正为最新的领域语法，但是我仍然在init()中遇到一些麻烦。

The Error:

The Compiler thrown the error: fatal error: use of unimplemented initializer init(realm:schema:) for CardModel.
编译器抛出错误:致命错误:对CardModel使用未实现的初始化程序init(realm:schema:)。
The thing is this error did not occur with the previous version of Realm.
问题是这个错误在之前的版本的领域中没有发生。
I used MultiPeer Connectivity framework for project, which means I need to Encode and Decode for exchanging of data.
我使用了project的MultiPeer Connectivity framework，这意味着我需要对数据进行编码和解码。
I tried to change or add other init() to CardModel, but it did not work.
我试图更改或向CardModel添加其他的init()，但它不起作用。

My Code:

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")
  }  
}

Please teach me how to solve this problem.

请教我如何解决这个问题。

A big appreciation for your guide and time.

非常感谢你的指导和时间。

Ethan Joe

伊桑乔

3 个解决方案

#1

I ran in the same problem the other day:

前几天我遇到了同样的问题:

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()

基本上，您不应该创建“init”方法，但是您可以创建“方便的init”方法。在这种情况下，你不能调用super.init()但你调用的是self。init()

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

在上面的例子中，你必须删除重写init()其他init可以是:

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
}

More information: https://github.com/realm/realm-cocoa/issues/1849

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

#2

You need to implement the init like that:

你需要像这样实现init:

init(object:schema:) {   
    super.init(object: object, schema: schema) 
}

There are various posts on github about that.

关于这一点，github上有很多帖子。

#3

I ended up needing to add:

最后我需要补充:

required convenience init?(_ map: Map) {
    self.init()
}

#1