从AppDelegate.swift访问splitViewController中的Tableview

Question

我搜索了很多但没有成功。我试图从AppDelegate.swift访问splitViewController的TableView。我该怎么做？

这是Apple为Split View Controller启动新项目时提供的标准代码：

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
        // Override point for customization after application launch.
        let splitViewController = self.window!.rootViewController as! UISplitViewController
        let navigationController = splitViewController.viewControllers[splitViewController.viewControllers.count-1] as! UINavigationController
        navigationController.topViewController!.navigationItem.leftBarButtonItem = splitViewController.displayModeButtonItem()
        splitViewController.delegate = self

        return true
    }

或者也许不可能？我无法相信： - ）