//未点击的颜色
[[UITabBarItem appearance] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys: [UIColor whiteColor], NSForegroundColorAttributeName, nil] forState:UIControlStateNormal];
//点击的颜色
UIColor *titleHighlightedColor = [UIColor yellowColor]; [[UITabBarItem appearance] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys: titleHighlightedColor, NSForegroundColorAttributeName, nil] forState:UIControlStateSelected];