Cannot create an NSPersistentStoreCoordinator with a nil model

Question

Been having my first crack at Core Data and I\'m getting the following error when running my code on my device, but it works fine on the simulator..

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Answer 1

I have been looking an answer for hours and nothing worked. But then I suddenly found this article. So according to this, the problem was in setting root controller in this part of AppDelegate.m:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
    ListViewController *rootView = (ListViewController *)self.window.rootViewController;
    rootView.managedObjectContext = self.managedObjectContext;
    return YES;
}

In fact you should define what root controller will delegate your CoreData connection. And in my case I had a TabBarController connected to other views, so my targed view root controller was defined as TabBar and it caused an error. I changed

ListViewController *rootView = (ListViewController *)self.window.rootViewController;

to

ListViewController *rootView = (ListViewController *)self.window.superview;

and everything worked.