var managedObjectContext: NSManagedObjectContext? {
    get {
        createManagedObjectContext()
        return self.managedObjectContext
    }
    set(newManagedObjectContext) {
        self.manageObjectContext = newManagedObjectContext
    }
}

func createManagedObjectContext() -> NSManagedObjectContext {

    if let coordinator = persistentStorageCoordinator() as NSPersistentStoreCoordinator!
    {
        self.managedObjectContext = NSManagedObjectContext()
        self.managedObjectContext!.persistentStoreCoordinator = coordinator

        NSNotificationCenter.defaultCenter().addObserver(self,selector: "handleBackgroundMOCDidSaveNotification:",name: NSManagedObjectContextDidSaveNotification,object: self.managedObjectContext)
    }

    return self.managedObjectContext!;
}

我收到一个错误：无法在self中分配给“managedObjectContext”。

有人可以帮忙解决这个问题吗？

提前致谢。