设置 CDEPersistentStoreEnsemble 给出 [NSMapTable cde_strongToStrongObjectsMapTable]：

Question

我正在设置整体以将 CoreData 同步到 iCloud。但它在启动时崩溃： [NSMapTable cde_strongToStrongObjectsMapTable]: 无法识别的选择器发送到 class 0x10d978c70 2016-08-05 12:48:42.502 Shooters_Journal[30266:751831] *** 由于未捕获的异常 'NSInvalidArgumentException' 而终止应用程序，原因：'+[NSMapTable cde_strongToStrongObjectsMapTable]：无法识别的选择器发送到 class 0x10d978c70'

我不明白这是什么意思。我该如何进行调试？？我已经添加了我的 CoreData Stack 和 Ensembles 设置。作为记录，该应用程序在不设置合奏的情况下运行良好。在我的 AppDelegate 中，我有：

 func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
// setups


// Setup Ensemble

        let modelURL = NSBundle.mainBundle().URLForResource("Myidentifier", withExtension: "momd")
        cloudFileSystem = CDEICloudFileSystem(ubiquityContainerIdentifier: nil)
        let storeURL = self.applicationDocumentsDirectory.URLByAppendingPathComponent("CoreData.sqlite")

        ensemble = CDEPersistentStoreEnsemble(ensembleIdentifier: "ShotsStore", persistentStoreURL: storeURL, managedObjectModelURL: modelURL!, cloudFileSystem: cloudFileSystem)
        ensemble.delegate = self

 return true
    }

我的CoreData栈是默认XCode创建的

// MARK: - Core Data stack

    lazy var applicationDocumentsDirectory: NSURL = {

        let urls = NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)
        return urls[urls.count-1]
    }()

    lazy var managedObjectModel: NSManagedObjectModel = {

       let modelURL = NSBundle.mainBundle().URLForResource("Myidentifier", withExtension: "momd")

        return NSManagedObjectModel(contentsOfURL: modelURL!)!

    }()

    lazy var persistentStoreCoordinator: NSPersistentStoreCoordinator = {

        // Create the coordinator and store
        let coordinator = NSPersistentStoreCoordinator(managedObjectModel: self.managedObjectModel)
        let storeUrl = self.applicationDocumentsDirectory.URLByAppendingPathComponent("SingleViewCoreData.sqlite")
        var failureReason = "There was an error creating or loading the application's saved data."



        do {
            try coordinator.addPersistentStoreWithType(NSSQLiteStoreType, configuration: nil, URL: storeUrl, options: nil)

        } catch {
            // 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 as NSError
            let wrappedError = NSError(domain: "YOUR_ERROR_DOMAIN", code: 9999, userInfo: dict)

            NSLog("Unresolved error \(wrappedError), \(wrappedError.userInfo)")
            abort()
        }

        return coordinator
    }()

    lazy var managedObjectContext: NSManagedObjectContext = {

        let coordinator = self.persistentStoreCoordinator
        var managedObjectContext = NSManagedObjectContext(concurrencyType: .MainQueueConcurrencyType)
        managedObjectContext.persistentStoreCoordinator = coordinator
        return managedObjectContext
    }()

该应用程序编译正常，但在启动时出现以下错误：

[NSMapTable cde_strongToStrongObjectsMapTable]: unrecognized selector sent to class 0x10d978c70

我现在只有那一行：

ensemble = CDEPersistentStoreEnsemble(ensembleIdentifier: "ShotsStore", persistentStoreURL: storeURL, managedObjectModelURL: modelURL!, cloudFileSystem: cloudFileSystem)

导致崩溃。我不知道错误是 persistentStoreURL、managedObjectModelURL 还是 cloudFileSystem。

Answer 1

我想你忘记了 README 中的 -ObjC 步骤。这将导致链接所有类别，从而导致缺少符号错误。

设置 CDEPersistentStoreEnsemble 给出 [NSMapTable cde_strongToStrongObjectsMapTable]：

Setting up CDEPersistentStoreEnsemble gives [NSMapTable cde_strongToStrongObjectsMapTable]:

core-data

ensembles