I had a bit of a problem today designing a nice tabbed UI for iPhone.
I wanted to manipulate the existing image on the tab bar to change its colour and to prevent iOS from changing its shading when selected/deselected. I was using an old stack of code from the ‘appearance’ delegate of UITabBarItem.
The solution was to generate a local variable for the existing icon image and to set the rendering mode:
UIImage *inboxImage = [[UIImage imageNamed:@"inbox"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
Then simply use this image on the TabBar after getting hold of it via the root controller:
UITabBarController *tabBarController = (UITabBarController *)self.window.rootViewController;
UITabBar *tabBar = tabBarController.tabBar;
UITabBarItem *tabInbox = [tabBar.items objectAtIndex:0];
I hate coming across deprecated methods as the help documentation isn’t too hot. Stack Overflow is usually pretty good, though.