OC 自定义 UITabBarController

+ (void)initialize {
	UITabBar *tabBar = [UITabBar appearance];
	// 设置 UITabBar 背景
	[tabBar setBackgroundColor:[UIColor whiteColor]];
	[tabBar setTintColor:[UIColor colorWithRed:234/255.0 green:57/255.0 blue:57/255.0 alpha:1]];
	[tabBar setBarTintColor:[UIColor whiteColor]];
	

    UITabBarItem *barItem = [UITabBarItem appearance];
	//    UIImage *image = barItem.image;
	//    barItem.image = [image imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
 
    NSMutableDictionary *itemAttrs = [NSMutableDictionary dictionary];
    itemAttrs[NSForegroundColorAttributeName] =[UIColor colorWithRed:234/255.0 green:57/255.0 blue:57/255.0 alpha:1];
    [barItem setTitleTextAttributes:itemAttrs forState:UIControlStateNormal];
    [barItem setTitleTextAttributes:itemAttrs forState:UIControlStateHighlighted];
}

- (void)awakeFromNib {
	[super awakeFromNib];
	// 修改未选中默认图标样式
	for (UITabBarItem *item in self.tabBar.items) {
	item.image = [item.image imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
	//UIImageRenderingModeAlwaysOriginal// 原版样式
	}
}