How to pass a variable to a UITabBarController viewController

[mtbennett24]

Hello,

What is the best way to pass a variable from a UIViewController to a viewController in the UITabBarController before making it visible. The following code is throwing an error:

2010-09-13 11:51:40.752 iFlyGuide[948:207] *** -[UINavigationController setImageObj:]: unrecognized selector sent to instance 0x12a280
2010-09-13 11:51:40.758 iFlyGuide[948:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[UINavigationController setImageObj:]: unrecognized selector sent to instance 0x12a280'

- (void)mapButtonPressed:(id)sender {
	AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
	
	MapViewController *mvc = [appDelegate.tabBarController.viewControllers objectAtIndex:2];
	mvc.imageObj = self.imageObj;
	appDelegate.tabBarController.selectedViewController = mvc;
	
}

From the current UIViewController, there is an object 'imageObj' I would like to pass that value to the MapViewController (which is part of the UITabBarController.viewControllers) before making it visible. Is this possible? I have declared and synthesized an 'imageObj' variable in MapViewController.

Thank you.

[mtbennett24]

Is it even possible to set values in UIViewController that is part of the viewControllers array in UITabController from some other ViewController within the app before switching to the aformentioned UIViewController?

[BrianSlick]

You're not paying enough attention to that error message. You tried to send it to a navigation controller. You aren't dealing with the correct object.

[mtbennett24]

Thank you