在Swift中从AppDelegate获取ViewController实例
在Swift中从AppDelegate获取ViewController实例
提问于 2014-07-09 01:45:34
当用户单击UILocalNotification时，我正尝试从应用程序代理中加载特定的ViewController。我已经知道这是在这个函数中调用的：
func application(application: UIApplication!, didReceiveLocalNotification notification: UILocalNotification!)但是当我尝试访问其中一个打开的ViewControllers时，我认为它返回的是null，因为我的应用程序崩溃了。这是我正在尝试的：
var rootViewController = self.window!.rootViewController
var storyBoard = rootViewController.storyboard
var setViewController = storyBoard.instantiateViewControllerWithIdentifier("CurrentShows") as ViewController_CurrentShows
rootViewController.navigationController.popToViewController(setViewController, animated: false)
setViewController.reloadData()它在popToViewController线路上崩溃了。
回答 1
Stack Overflow用户
回答已采纳
发布于 2014-07-10 09:27:25
您可以尝试：
let rootViewController = self.window!.rootViewController
let mainStoryboard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
let setViewController = mainStoryboard.instantiateViewControllerWithIdentifier("CurrentShows") as! DetailViewController
rootViewController?.navigationController?.popToViewController(setViewController, animated: false)Swift 3:
let mainStoryboard = UIStoryboard(name: "Main", bundle: nil)
let controller = mainStoryboard.instantiateViewController(withIdentifier: "viewController")
self.present(viewController, animated: true, completion: nil)页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/24638376
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