如何使用swift在AppDelegate中导入UIViewController

Question

我有一个名为FirstViewController.swift的UIViewController类，我想在AppDelegate.swift中导入我的app，命名为MySample.How，以便在AppDelegate.swift中导入UIViewController.swift。我用Google搜索但无法找到有效的答案。

提前致谢。

Answer 1

试用此代码：

    func application(application: UIApplication, openURL url: NSURL, sourceApplication: String, annotation: AnyObject?) -> Bool {
    var rootViewController = self.window!.rootViewController as UINavigationController
    let mainStoryboard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
    var FirstViewController = mainStoryboard.instantiateViewControllerWithIdentifier("StoryBoardID") as FirstViewController
    rootViewController.pushToViewController(FirstViewController, animated: true)

    return true

  }