Swift核心數據嘗試填充時出錯

我是swift的新成員，並且核心數據出現問題。Swift核心數據嘗試填充時出錯

嘗試填充時，我的應用崩潰。我只是有1場是用於測試目的

import UIKit 
import SwiftyJSON 
import CoreData 

class ViewController: UIViewController { 

override func viewDidLoad() { 
    super.viewDidLoad() 
    // Do any additional setup after loading the view, typically from a nib. 

    seedRestaurantList() 
    fetch() 
} 

override func didReceiveMemoryWarning() { 
    super.didReceiveMemoryWarning() 
    // Dispose of any resources that can be recreated. 
} 


func fetch() { 
    let moc = DataController().managedObjectContext 
    let nameFetch = NSFetchRequest(entityName: "RestaurantList") 

    do { 
     let fetchedName = try moc.executeFetchRequest(nameFetch) as! [RestaurantList] 
     print(fetchedName.first!.name!) 

    } catch { 
     fatalError("merda again: \(error)") 
    } 
} 
func seedRestaurantList() { 
    let moc = DataController().managedObjectContext 


    let entity = NSEntityDescription.insertNewObjectForEntityForName("RestaurantList", inManagedObjectContext: moc) as! RestaurantList 

    entity.setValue("teste", forKey: "name") 


    do { 
     try moc.save() 


    } catch { 
     fatalError("deu merda: \(error)") 
    } 
}

}

這是我得到提前

--- RestaurantList + CoreDataProperties.swift

2015-11-02 17:38:04.880 DinDins[2993:1252158] CoreData: error: Illegal attempt to save to a file that was never opened. "This NSPersistentStoreCoordinator has no persistent stores (unknown). It cannot perform a save operation.". No last error recorded. 2015-11-02 17:38:04.885 DinDins[2993:1252158] * Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'This NSPersistentStoreCoordinator has no persistent stores (unknown). It cannot perform a save operation.' * First throw call stack: (0x236c585b 0x3503adff 0x2346da89 0x2346dc95 0x2346de2d 0x2347710f 0x1249d03 0x12534fb 0x23468ef1 0x233b31f3 0x233b3223 0x233d615b 0x9cff0 0x9c360 0x9c400 0x277f9f55 0x278b6c4f 0x278b6b45 0x278b5ef1 0x278b5b27 0x278b577d 0x278b56f7 0x277f5cc3 0x270bdb05 0x270b9201 0x270b9091 0x270b85b1 0x270b8263 0x270b1a1f 0x23688091 0x23686387 0x235d90f9 0x235d8ecd 0x27867607 0x278622dd 0x9fde0 0x35788873) libc++abi.dylib: terminating with uncaught exception of type NSException (lldb)

由於錯誤

import Foundation 
import CoreData 

extension RestaurantList { 

    @NSManaged var name: String? 

}

--- RestaurantList.swift

import Foundation 
import CoreData 

class RestaurantList: NSManagedObject { 

// Insert code here to add functionality to your managed object subclass 


}

來源

2015-11-02 Ricardo Alves

您是否修改了現有的核心數據結構？ –

剛剛添加了RestaurantList + CoreDataProperties.swift和RestaurantList.swift –

而且您沒有爲您的MOC添加任何新參數？ –

裏卡多，嘗試重置您的模擬器。打開模擬器，轉到菜單模擬器並選擇重置內容和設置

來源

2015-11-02 17:59:34

我正在iPhone上測試。我應該避免這樣做嗎？ –

刪除你的應用程序並再次安裝 –

我已經刪除了該項目並創建了一個從頭開始，它的工作，謝謝 –

Swift核心數據嘗試填充時出錯

回答

相關問題