ios retrieve when uitabbarcontroller item is selected - objective-c

Question

I need to retrieve when a user click over a tabbaritem into a uitabbarcontroller to change something..
here is my code:
- (void)tabBar:(UITabBar *)tabBar didSelectItem:(UITabBarItem *)item
{
if (item == [tabBarController.tabBar.items objectAtIndex:2]) {
item.title = #"add shot";
}
else
{
item.title = #"Race";
}
}
but If I do this:
self.tabBarController.tabBar.delegate = self;
i receive a sigkill...
what's the right solution? thanks in advance

Answer 1

Does your view controller conform to the UITabBarDelegate protocol?
In the header file:
#interface MyViewController : UIViewController<UITabBarDelegate> {
// ...
}
- (void)tabBar:(UITabBar *)tabBar didSelectItem:(UITabBarItem *)item;
#end
Then, just do:
tabBar.delegate = self;
Instead of:
self.tabBarController.tabBar.delegate = self;
And:
- (void)tabBar:(UITabBar *)tabBar didSelectItem:(UITabBarItem *)item {
//self.tabBarItem.title = #"Title";
}

Answer 2

I came across this answer while learning iOS development, But I wanted to include the little missing pieces for n00bs like me.
// HelloWorldViewController.h
#interface HelloWorldViewController : UIViewController <UITabBarDelegate>
{
}
#property (weak, nonatomic) IBOutlet UITabBar *tabBar;
#end
And
// HelloWorldViewController.m
#interface HelloWorldViewController ()
#end
#implementation HelloWorldViewController
#synthesize tabBar;
- (void) viewDidLoad
{
tabBar.delegate = self;
}
-(void)tabBar:(UITabBar *)tabBar didSelectItem:(UITabBarItem *)item
{
NSLog(#"didSelectItem: %d", item.tag);
}
#end