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