tabBar didSelectItem seems not to be working - iphone

Question

In my header file I have this:
#interface TabBarController : UIViewController <UIApplicationDelegate, UITabBarDelegate, UITabBarControllerDelegate>{
IBOutlet UITabBarController *tabBarController;
}
-(void)tabBar:(UITabBar *)tabBar didSelectItem:(UITabBarItem *)item;
#property (nonatomic, retain) IBOutlet UITabBarController *tabBarController;
#end
In my main file I have this:
#synthesize tabBarController;
-(void)viewDidLoad{
[super viewDidLoad];
self.tabBarController.delegate = self;
self.view = tabBarController.view;
}
-(void)tabBar:(UITabBar *)tabBar didSelectItem:(UITabBarItem *)item{
NSLog(#"rawr");
}
- (void)viewDidUnload {
[super viewDidUnload];
}
- (void)dealloc {
[tabBarController release];
[super dealloc];
}
#end
I have already connected my tabbarcontroller as a delegate to my file's owner in interface builder, but it still never calls the didSelectItem method.
Is there anything that I'm missing here?
I have already added tabBarController.delegate = self; and it still does not work.

Answer 1

-(void)tabBar:(UITabBar *)tabBar didSelectItem:(UITabBarItem *)item;
This method is a delegate method for UITabBar, not UITabBarController, so
self.tabBarController.delegate = self;
will not work.
Tab bar controller has its own UITabBar, but changing the delegate of a tab bar managed by a tab bar controller is not allowed, so just try UITabBarControllerDelegate method like this:
- (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController

Answer 2

You need to add this:
tabbarcontroller.delegate = self;

Answer 3

Use UITabBarControllerDelegate instead of UITabBarDelegate and -tabBarController:didSelectViewController{} instead of tabBar:didSelectItem{}
Interface
#interface TabBarController : UIViewController <UIApplicationDelegate, UITabBarControllerDelegate, UITabBarControllerDelegate>{
IBOutlet UITabBarController *tabBarController;
}
#property (nonatomic, retain) IBOutlet UITabBarController *tabBarController;
#end
main file
#implementation TabBarController
#synthesize tabBarController;
/*other stuff*/
- (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController{
NSLog(#"rawr");
}
/*other stuff*/
#end

Answer 4

Just set the delegate for the tab bar. You can do it by setting self.tabBarController.delegate = self; or using Interface builder do to the tabbarcontroller object (not bar) see the connection inspector and drag the connection on the file's owner.

Answer 5

You have synthesized the tab bar, so you now need to write: self.tabBarController.delegate = self;

Answer 6

There are many reasons, as indicated above, why it might not be working. Here is a more subtle reason. If you are creating your UI programatically (no storyboard or Xib) you need to set the screen of your UIWindow.
self.window = [[UIWindow alloc] init];
self.window.screen = [UIScreen mainScreen]; // <- The UITabViewController will not
// accept taps without this.
If you are using a Xib, I believe this is equivalent to having "Full Screen at Launch" selected. That has to be checked or I have noticed my Tabs don't work.
I had a non-working tab controller and this is what I had to do to get it working. None of the other answers on this page helped me. I suppose using a xib/storyboard is pretty rare these days (I think this was from iOS 5 days) but leaving here for the person that does and stumbles into this situation.