iOS Swift CoreData在插入时出错：警告：无法为实体加载类_Ios_Xcode_Swift_Core Data

iOS Swift CoreData在插入时出错：警告：无法为实体加载类

ios xcode swift core-data

iOS Swift CoreData在插入时出错：警告：无法为实体加载类,ios,xcode,swift,core-data,Ios,Xcode,Swift,Core Data,我试图在Xcode 6.3.1中使用Swift将元素插入核心数据，但我得到了一个错误。我已经采纳了几个Stackoverflow答案（在底部列出）中的解决方案，但没有一个有助于解决这个问题我创建了另一个应用程序来简化代码和问题，希望它能为其他有此问题的人提供更大的好处错误： CoreData:警告：无法为实体“Test”加载名为“Scratch.Test”的类。未找到类，改为使用默认NSManagedObject 代码：（更新：预修复）数据模型对不起，我是新来的，不允许发布图像应用程序

我试图在Xcode 6.3.1中使用Swift将元素插入核心数据，但我得到了一个错误。我已经采纳了几个Stackoverflow答案（在底部列出）中的解决方案，但没有一个有助于解决这个问题

我创建了另一个应用程序来简化代码和问题，希望它能为其他有此问题的人提供更大的好处

错误： CoreData:警告：无法为实体“Test”加载名为“Scratch.Test”的类。未找到类，改为使用默认NSManagedObject

代码：（更新：预修复）

数据模型对不起，我是新来的，不允许发布图像
应用程序名称：Scratch
-Scratch.xcdatamodeld
-试验（等级=划痕试验）
--保存我（作为字符串）

测试中的代码。swift


        import Foundation
        import CoreData

        @objc(Test)
        class Test: NSManagedObject {

              @NSManaged var saveMe: String

        }


import UIKit
import CoreData

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?


    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
        // Override point for customization after application launch.
        return true
    }

    // MARK: - Core Data stack
    lazy var applicationDocumentsDirectory: NSURL = {
        // The directory the application uses to store the Core Data store file. This code uses a directory named "self.com.AG.TaskIt" in the application's documents Application Support directory.
        let urls = NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)
        return urls[urls.count-1] as! NSURL
        }()
    lazy var managedObjectModel: NSManagedObjectModel = {
        // The managed object model for the application. This property is not optional. It is a fatal error for the application not to be able to find and load its model.
        let modelURL = NSBundle.mainBundle().URLForResource("Scratch", withExtension: "momd")!
        return NSManagedObjectModel(contentsOfURL: modelURL)!
        }()
    lazy var persistentStoreCoordinator: NSPersistentStoreCoordinator? = {
        // The persistent store coordinator for the application. This implementation creates and return a coordinator, having added the store for the application to it. This property is optional since there are legitimate error conditions that could cause the creation of the store to fail.
        // Create the coordinator and store
        var coordinator: NSPersistentStoreCoordinator? = NSPersistentStoreCoordinator(managedObjectModel: self.managedObjectModel)
        let url = self.applicationDocumentsDirectory.URLByAppendingPathComponent("Scratch.sqlite")
        var error: NSError? = nil
        var failureReason = "There was an error creating or loading the application's saved data."
        if coordinator!.addPersistentStoreWithType(NSSQLiteStoreType, configuration: nil, URL: url, options: nil, error: &error) == nil {
            coordinator = nil
            // Report any error we got.
            var dict = [String: AnyObject]()
            dict[NSLocalizedDescriptionKey] = "Failed to initialize the application's saved data"
            dict[NSLocalizedFailureReasonErrorKey] = failureReason
            dict[NSUnderlyingErrorKey] = error
            error = NSError(domain: "YOUR_ERROR_DOMAIN", code: 9999, userInfo: dict)
            // Replace this with code to handle the error appropriately.
            // abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
            NSLog("Unresolved error \(error), \(error!.userInfo)")
            abort()
        }
        return coordinator
        }()
    lazy var managedObjectContext: NSManagedObjectContext? = {
        // Returns the managed object context for the application (which is already bound to the persistent store coordinator for the application.) This property is optional since there are legitimate error conditions that could cause the creation of the context to fail.
        let coordinator = self.persistentStoreCoordinator
        if coordinator == nil {
            return nil
        }
        var managedObjectContext = NSManagedObjectContext()
        managedObjectContext.persistentStoreCoordinator = coordinator
        return managedObjectContext
        }()
    // MARK: - Core Data Saving support
    func saveContext () {
        if let moc = self.managedObjectContext {
            var error: NSError? = nil
            if moc.hasChanges && !moc.save(&error) {
                // Replace this implementation with code to handle the error appropriately.
                // abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
                NSLog("Unresolved error \(error), \(error!.userInfo)")
                abort()
            }
        }
    }

}

AppDelegate.swift中的代码

import Foundation import CoreData @objc(Test) class Test: NSManagedObject { @NSManaged var saveMe: String }

import UIKit import CoreData @UIApplicationMain class AppDelegate: UIResponder, UIApplicationDelegate { var window: UIWindow? func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool { // Override point for customization after application launch. return true } // MARK: - Core Data stack lazy var applicationDocumentsDirectory: NSURL = { // The directory the application uses to store the Core Data store file. This code uses a directory named "self.com.AG.TaskIt" in the application's documents Application Support directory. let urls = NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask) return urls[urls.count-1] as! NSURL }() lazy var managedObjectModel: NSManagedObjectModel = { // The managed object model for the application. This property is not optional. It is a fatal error for the application not to be able to find and load its model. let modelURL = NSBundle.mainBundle().URLForResource("Scratch", withExtension: "momd")! return NSManagedObjectModel(contentsOfURL: modelURL)! }() lazy var persistentStoreCoordinator: NSPersistentStoreCoordinator? = { // The persistent store coordinator for the application. This implementation creates and return a coordinator, having added the store for the application to it. This property is optional since there are legitimate error conditions that could cause the creation of the store to fail. // Create the coordinator and store var coordinator: NSPersistentStoreCoordinator? = NSPersistentStoreCoordinator(managedObjectModel: self.managedObjectModel) let url = self.applicationDocumentsDirectory.URLByAppendingPathComponent("Scratch.sqlite") var error: NSError? = nil var failureReason = "There was an error creating or loading the application's saved data." if coordinator!.addPersistentStoreWithType(NSSQLiteStoreType, configuration: nil, URL: url, options: nil, error: &error) == nil { coordinator = nil // Report any error we got. var dict = [String: AnyObject]() dict[NSLocalizedDescriptionKey] = "Failed to initialize the application's saved data" dict[NSLocalizedFailureReasonErrorKey] = failureReason dict[NSUnderlyingErrorKey] = error error = NSError(domain: "YOUR_ERROR_DOMAIN", code: 9999, userInfo: dict) // Replace this with code to handle the error appropriately. // abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development. NSLog("Unresolved error \(error), \(error!.userInfo)") abort() } return coordinator }() lazy var managedObjectContext: NSManagedObjectContext? = { // Returns the managed object context for the application (which is already bound to the persistent store coordinator for the application.) This property is optional since there are legitimate error conditions that could cause the creation of the context to fail. let coordinator = self.persistentStoreCoordinator if coordinator == nil { return nil } var managedObjectContext = NSManagedObjectContext() managedObjectContext.persistentStoreCoordinator = coordinator return managedObjectContext }() // MARK: - Core Data Saving support func saveContext () { if let moc = self.managedObjectContext { var error: NSError? = nil if moc.hasChanges && !moc.save(&error) { // Replace this implementation with code to handle the error appropriately. // abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development. NSLog("Unresolved error \(error), \(error!.userInfo)") abort() } } } }

我找不到任何能让我克服这个错误的东西。以下是我发现的一些不起作用的解决方案：

更新：所以这是一个可能的答案。

和
确保实用程序面板的数据模型检查器中“类”下的字段“模块”设置为当前产品模块

@objc（Test）

Scratch.Test