Setting UITabBarIcon tint when unselected - iphone

Question

I am trying to set the icons of a UITabBarItem, but it is not working. By the way, I'm using Xcode 5 Beta for this project.
#implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
{
[[UITabBarItem appearance] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:[UIColor whiteColor], NSForegroundColorAttributeName, nil] forState:UIControlStateNormal];
UIImage *tabBarBackground = [UIImage imageNamed:#"tabbar.png"];
[[UITabBar appearance] setBackgroundImage:tabBarBackground];
[[UITabBar appearance] setSelectionIndicatorImage:[UIImage imageNamed:#"tabbar_selected.png"]];
[[UITabBar appearance] setTintColor:[UIColor whiteColor]];
}
return YES;
}
I am trying to get the icons to be white when both selected and unselected, but they are remaining gray in the unselected state.
Edit
I tried doing this, but now im getting the error "Expression Result Unused"
UITabBarController *tabBarController = (UITabBarController *)self.window.rootViewController;
UITabBar *tabBar = tabBarController.tabBar;
UITabBarItem *tabBarItem1 = [tabBar.items objectAtIndex:0];
tabBarItem1.title = #"Home";
UIImage *graph = [UIImage imageNamed:#"graph.png"];
[tabBarItem1 initWithTitle:(NSString *)#"HELLO" image:(UIImage *)graph selectedImage:(UIImage *)graph];

Answer 1

tintColor sets the tint color of the background, you can't see this if you use a custom background image. If you don't want to have the system default gradient you have to use setFinishedSelectedImage:withFinishedUnselectedImage: and set your white image for both of them.
Like this:
UIImage *selectedImage = ...
UIImage *unselectedImage = selectedImage;
[tabBarItem setFinishedSelectedImage:selectedImage withFinishedUnselectedImage:unselectedImage];
If you are setting those images in a Storyboard you can iterate over the existing UITabBarItems and change their images.
Put something like this into application:didFinishLaunchingWithOptions:
UITabBarController *tabBarController = (UITabBarController *)self.window.rootViewController;
NSAssert([tabBarController isKindOfClass:[UITabBarController class]], #"self.window.rootViewController must be a tabBarController");
for (UIViewController *viewController in tabBarController.viewControllers) {
UITabBarItem *tabBarItem = viewController.tabBarItem;
UIImage *tabImage = tabBarItem.image;
[tabBarItem setFinishedSelectedImage:tabImage withFinishedUnselectedImage:tabImage];
}