swift-UITabBarController 设置选中和未选中状态文字图片颜色或使用原图

1,对于底层框架来讲最好还是使用代码编写，虽然 storyboard 提供很大的便捷，但是 storyboard 中还是有部分功能没有，（拿最简单的设置选中的 item 颜色）

用代码实现，非常简单，一般来讲只要不需要 tabbar 非常个性化，系统的就完全满足，如果你钟情于自定义，那么自己慢慢研究吧，也并不困难

在AppDelegate中

self.window = UIWindow(frame:UIScreen.mainScreen().bounds)

self.window?.makeKeyAndVisible()

let tabbar  =IHGTabBarController()

self.window?.rootViewController=tabbar

新建一个类：

class IHGTabBarController:UITabBarController 

//MARK:----------设置 MainTabBar

   func xzSetMainTabBar(){
        // ---创建 viewControllers
       let xiaofeiVC =IHGXiaoFeiVC()
        let huangouVC =IHGHuanGouVC()
        let linggouVC =IHGLingGouVC()
        let butieVC   =IHGBuTieVC()
        let wodeVC    =IHGWoDeVC()
        // ----创建 navigation
       let navigation0 =UINavigationController(rootViewController:xiaofeiVC)
        let navigation1 =UINavigationController(rootViewController:huangouVC)
        let navigation2 =UINavigationController(rootViewController:linggouVC)
        let navigation3 =UINavigationController(rootViewController:butieVC)
        let navigation4 =UINavigationController(rootViewController:wodeVC)
        let tabArray = [navigation0,navigation1,navigation2,navigation3,navigation4]
        //let tabArray = [xiaofeiVC,huangouVC,linggouVC,butieVC,wodeVC]
       self.viewControllers = tabArray
       
       
        navigation0.tabBarItem.title = "0"
        navigation0.tabBarItem.image = UIImage(named:"tabbarN0")
       
        navigation1.tabBarItem.title = "1"
        navigation1.tabBarItem.image = UIImage(named:"tabbarN1")
       
        navigation2.tabBarItem.title = "2"
        navigation2.tabBarItem.image = UIImage(named:"tabbarN2")
       
        navigation3.tabBarItem.title = "3"
        navigation3.tabBarItem.image = UIImage(named:"tabbarN3")
       
        navigation4.tabBarItem.title = "4"
        navigation4.tabBarItem.image = UIImage(named:"tabbarN4")
       
       self.tabBar.barTintColor = UIColor.whiteColor() //背景
        self.tabBar.tintColor = UIColor.orangeColor()   //选中颜色

        

        // --- 定义 未选中 和 选中 文字颜色
        UITabBarItem . appearance (). setTitleTextAttributes (
            [ NSForegroundColorAttributeName : UIColor . blackColor ()], forState:.Normal)
        UITabBarItem . appearance (). setTitleTextAttributes (
            [ NSForegroundColorAttributeName : UIColor . orangeColor ()], forState:.Selected)
        // --- 未选中 使用原图   保持原图风格
        navigation0. tabBarItem . image = navigation0. tabBarItem . image ?. imageWithRenderingMode ( UIImageRenderingMode . AlwaysOriginal )
        navigation1. tabBarItem . image = navigation1. tabBarItem . image ?. imageWithRenderingMode ( UIImageRenderingMode . AlwaysOriginal )
        navigation2. tabBarItem . image = navigation2. tabBarItem . image ?. imageWithRenderingMode ( UIImageRenderingMode . AlwaysOriginal )
        navigation3. tabBarItem . image = navigation3. tabBarItem . image ?. imageWithRenderingMode ( UIImageRenderingMode . AlwaysOriginal )
        navigation4. tabBarItem . image = navigation4. tabBarItem . image ?. imageWithRenderingMode ( UIImageRenderingMode . AlwaysOriginal )
        // ---- 如果你想使用 未选中和选中 都是自己的图片 那么用下面的方法
//        navigation3.tabBarItem = UITabBarItem(title: " 3 ", image: UIImage(named: "tabbarN3")?.imageWithRenderingMode(.AlwaysOriginal),

//            selectedImage: UIImage(named: "tabbarY3")?.imageWithRenderingMode(.AlwaysOriginal))

       

    }

VC中的跳转

let vc = IHGShopMallVC()         

vc. hidesBottomBarWhenPushed = true   

self.navigationController?.pushViewController(vc, animated: true)

如果在 vc 中需要跳转到  另一个 TabBarItem,在按钮相应事件中：

self . navigationController ?. tabBarController ?. selectedIndex = 2