class ViewControllerHelper: NSObject {
    
    /// 通過ClassName動態(tài)創(chuàng)建ViewController
    /// - Parameter className: calssName
    /// - Returns: ViewController
   class func getViewControllerWithCalssName(_ className: String) -> UIViewController {
        
        // 準備工作: 命名空間: 必須指定那個bundle(包)
        // 從Info.plist中獲取bundle的名字
        let namespace = Bundle.main.infoDictionary!["CFBundleName"] as! String
        // 0.將控制器的字符串轉(zhuǎn)成控制器類型
        let classFromStr: AnyClass? = NSClassFromString(namespace + "." + className)
        let viewControllerClass = classFromStr as! UIViewController.Type
        // 1.創(chuàng)建控制器對象
        let viewController = viewControllerClass.init()
        
        return viewController;
        
    }

}