iOS controlling tabbar items

[sujithkrishnan]

Hi

In my app, i am having tabBarController , whose view is added to window's subview.

CODE is like as follows...

FirstViewController *first = [[FirstViewController alloc]init];
	SecondViewController *second = [[SecondViewController alloc]init];
	ThirdViewController *third   = [[ThirdViewController alloc]init];
	
	UINavigationController *nav1 = [[UINavigationController alloc]initWithRootViewController:first];
	UINavigationController *nav2 = [[UINavigationController alloc]initWithRootViewController:second];
	UINavigationController *nav3 = [[UINavigationController alloc]initWithRootViewController:third];
	[first release];
	[second release];
	[third release];
	
 	tabBarController = [[UITabBarController alloc]init];
	[tabBarController setViewControllers:[NSArray arrayWithObjects:nav1,nav2,nav3,nil] animated:YES];
	[nav1 release];
	[nav2 release];
	[nav3 release];
	[window addSubview:[tabBarController view]];
	[window makeKeyAndVisible];

Here in one of my controller , i am having a button added to its view.
On clicking that button i want to re arrange the tabBar

For eg: If user touch that Button, my tabBar should contains only two items, say second View Controller and thirdViewController.

I tried it with setting viewControllers of the tabBarController

On click of Buttoon in firstViewController... i will call as follows

sampleTabBarAppDelegate *sample = [[UIApplication sharedApplication] delegate];
[sample changeStyleToTwoItems];

Following is the method which i call ....

-(void)changeStyleToTwoItems
{
SecondViewController *second = [[SecondViewController alloc]init];
	ThirdViewController *third   = [[ThirdViewController alloc]init];
	
	UINavigationController *nav2 = [[UINavigationController alloc]initWithRootViewController:second];
	UINavigationController *nav3 = [[UINavigationController alloc]initWithRootViewController:third];
	[second release];
	[third release];
	
 	tabBarController = [[UITabBarController alloc]init];
	[tabBarController setViewControllers:[NSArray arrayWithObjects:nav2,nav3,nil] animated:YES];
	[nav2 release];
	[nav3 release];
	[window addSubview:[tabBarController view]];
	[window makeKeyAndVisible];
}

The thing is that it is working and removing teh old tabBar with new one... But teh new one is not responding....