一炭序、加載storyboard進入初始化

    func tabBarAddChildstoryBoradName(sbName: String, title: String, imageName: String, selectedImageName: String) {
        //加載指定名稱的sb文件
        let sb = UIStoryboard(name: sbName, bundle: nil)
        let vc = sb.instantiateInitialViewController()
        
        //由storyboard進入
        vc!.tabBarItem = UITabBarItem(title: title, image: UIImage(named: imageName), selectedImage: UIImage(named: selectedImageName))
        vc!.view.backgroundColor = UIColor.whiteColor()
        
        let nav = ZFBMainNavigationController(rootViewController: vc!)
        vc!.navigationItem.title = title
        addChildViewController(nav)

    }
    ```

  ### 二媒熊、-加載類名進行初始化

func tabBarAddChildClassName(vcName: String, title: String, imageName: String, selectedImageName: String) {
        //獲取命名空間
        let clsName = NSBundle.mainBundle().infoDictionary!["CFBundleExecutable"] as! String
        //把字符串形式的類名稱轉換成類
        let classType = NSClassFromString(clsName + "." + controllerName) as! UIViewController.Type

        //通過class創(chuàng)建對象
        let vc = classType.init()
    
    //由viewcontroller直接添加
    vc.tabBarItem = UITabBarItem(title: title, image: UIImage(named: imageName), selectedImage: UIImage(named: selectedImageName))
    vc.view.backgroundColor = UIColor.whiteColor()
    
    let nav = ZFBMainNavigationController(rootViewController: vc)
    vc.navigationItem.title = title
    addChildViewController(nav)
    
}

    
   ## //MARK: -加載swift文件進行初始化

func tabBarAddChildViewController(vc: UIViewController, title: String, imageName: String, selectedImageName: String){
    
    
    //由viewcontroller直接添加
    vc.tabBarItem = UITabBarItem(title: title, image: UIImage(named: imageName), selectedImage: UIImage(named: selectedImageName))
    vc.view.backgroundColor = UIColor.whiteColor()
    
    let nav = ZFBMainNavigationController(rootViewController: vc)
    vc.navigationItem.title = title
    addChildViewController(nav)

}