斯威夫特信號SIGABRT錯誤

Question

下面的代碼：

func setupData() { 

    clearData() 

    let delegate = UIApplication.shared.delegate as? AppDelegate 

    if let context = delegate?.persistentContainer.viewContext { 



     let mark = NSEntityDescription.insertNewObject(forEntityName: "Friend", into: context) as! Friend 
     mark.name = "Vuyo Nkabinde" 
     mark.profileImageName = "zuckprofile" 


     let message = NSEntityDescription.insertNewObject(forEntityName: "Message", into: context) as! Message 
     message.friend = mark 
     message.text = "Hello, my name is Mark. Nice to meet you..." 
     message.date = NSDate() 

     let steve = NSEntityDescription.insertNewObject(forEntityName: "Friend", into: context) as! Friend 
     steve.name = "Steve Jobs" 
     steve.profileImageName = "steve_profile" 

     let messagesSteve = NSEntityDescription.insertNewObject(forEntityName: "Message", into: context) as! Message 
     messagesSteve.friend = steve 
     messagesSteve.text = "Code is the most innovative company I have ever seen..." 
     messagesSteve.date = NSDate() 

     do { 
     try(context.save()) 
     } catch let err { 
      print(err) 

     } 

    } 

我的問題與let mark = NSEntityDescription.insertNewObject(forEntityName: "Friend", into: context) as! Friend線，這是寫在迅速2，我改變了所有的代碼，以迅速3，但這一行給了我一個信號SIGABRT錯誤。

Answer 1

看起來像訪問託管對象的界面從swift2更改爲swift3。在本question/answer解釋，看起來像你的情況，你需要：

let mark = Friend(context: context) 
mark.name = "Vuyo Nkabinde" 
mark.profileImageName = "zuckprofile" 

Answer 2

根據我的雨燕3.0的應用程序：

let entity = NSEntityDescription.entity(forEntityName: "Friend", in: context) 
let mark = Friend(entity: entity!, insertInto: context) 
mark.name = "Vuyo Nkabinde" 
mark.profileImageName = "zuckprofile" 

[etc...] 

Answer 3

它應該是這樣的斯威夫特卡倫特3：

let employee = NSEntityDescription.insertNewObjectForEntityForName("Friend", inManagedObjectContext: context) as! Friend 

請檢查Swift 3的語法，如上所述。

希望是幫助