Initiating managedObjectContext

[LokiHobbs]

I am using the tab bar application template and have added core data. Using the Core Data Books template, I am trying to create the sqlite3 database with the following:

- (void)applicationDidFinishLaunching:(UIApplication *)application {
	
	FirstViewController *rootViewController = (FirstViewController *)[tabBarController topViewController];
	rootViewController.managedObjectContext = self.managedObjectContext;	    
   
	// Add the tab bar controller's current view as a subview of the window
    [window addSubview:tabBarController.view];
}

I have imported my firstviewcontroller.h file into the appdelegate.h file.

That is where it crashes with the message "Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[UITabBarController topViewController]: unrecognized selector sent to instance".

I am not used to working with a XIB file so my thoughts are something is conflicting with my code and the XIB. Any suggestions would be appreciated.

[zardon]

Originally Posted by LokiHobbs

I am using the tab bar application template and have added core data. Using the Core Data Books template, I am trying to create the sqlite3 database with the following:

- (void)applicationDidFinishLaunching:(UIApplication *)application {
	
	FirstViewController *rootViewController = (FirstViewController *)[tabBarController topViewController];
	rootViewController.managedObjectContext = self.managedObjectContext;	    
   
	// Add the tab bar controller's current view as a subview of the window
    [window addSubview:tabBarController.view];
}

I have imported my firstviewcontroller.h file into the appdelegate.h file.

That is where it crashes with the message "Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[UITabBarController topViewController]: unrecognized selector sent to instance".

I am not used to working with a XIB file so my thoughts are something is conflicting with my code and the XIB. Any suggestions would be appreciated.

Try changing;

[tabBarController topViewController];

to:

[navController topViewController];

You will need to define what navController is (IBOutlet UINavigationController... etc)