Ios 如何在从远程通知启动时为相应的viewcontroller提供导航堆栈

我的目标：当用户响应远程通知启动应用程序时

应向用户提供适当的viewcontroller

viewcontroller的导航堆栈应与用户手动访问viewcontroller时的导航堆栈相同 我的配置：

• HomeViewController:UITabBarController

  是根。每个选项卡都有

  UINavigationController

• ConversationGroupTableViewController:UITableViewController

  位于第四个选项卡上，显示对话组列表

• ConversationGroupDetailViewController:UITableViewController

  从

  tableView（tableView:UITableView，didSelectRowAtIndexPath:nsindepath）

  中的

  加载。它显示该对话组中的消息列表

示例案例：通知用户新消息已到达。当用户响应远程通知启动应用程序时，应向用户显示一个

ConversationGroupDetailViewController

实例，该实例在其导航堆栈中包含

ConversationGroupTableViewController

和

HomeViewController

，以便用户可以按后退按钮到达它们

迄今为止的代码： 在

AppDelegate.swift

中：

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
    let notificationSettings = UIUserNotificationSettings(forTypes: [.Alert, .Badge, .Sound], categories: nil)    
    application.registerUserNotificationSettings(notificationSettings)
    application.registerForRemoteNotifications()

    if let notificationDictionary = launchOptions?[UIApplicationLaunchOptionsRemoteNotificationKey] as? NSDictionary {
        instantiateViewControllerFromNotification(notificationDictionary)
    }
    return FBSDKApplicationDelegate.sharedInstance().application(application, didFinishLaunchingWithOptions: launchOptions)
}

func instantiateViewControllerFromNotification(notificationDictionary: NSDictionary) {
    let storyboard = UIStoryboard(name: "Main", bundle: nil)
    let initialViewController = self.window?.rootViewController as! UITabBarController
    initialViewController.selectedIndex = 3

    let navigationController = initialViewController.viewControllers![3] as! UINavigationController
    let detailViewController = storyboard.instantiateViewControllerWithIdentifier("ConversationGroupDetailViewController") as! ConversationGroupDetailViewController

    navigationController.popToRootViewControllerAnimated(false)
    navigationController.pushViewController(detailViewController, animated: false)
}

我想我走上了正确的轨道，但我似乎不知道该怎么做。我将感谢任何帮助

编辑： 我做了更多的实验并更新了代码。此代码符合我的要求。

@Harfangk

延迟1秒后调用此方法。因为您在启动应用程序时正在推送控制器

func instantiateViewControllerFromNotification(notificationDictionary: NSDictionary) {
  let storyboard = UIStoryboard(name: "Main", bundle: nil)
  let initialViewController = storyboard.instantiateInitialViewController() as! UITabBarController
  initialViewController.selectedIndex = 3

  let navigationController = storyboard.instantiateInitialViewController().viewControllers![3] as! UINavigationController
  let tableViewController = storyboard.instantiateViewControllerWithIdentifier("ConversationGroupTableViewController") as! ConversationGroupTableViewController
  let detailViewController = storyboard.instantiateViewControllerWithIdentifier("ConversationGroupDetailViewController") as! ConversationGroupDetailViewController

  navigationController.pushViewController(tableViewController, animated: false) 
  navigationController.pushViewController(detailViewController, animated: false)
}

---

@harfangk你检查过了吗？谢谢你的回答，但我认为问题不在于延迟，而在于获得每个ViewController的正确实例。我让它工作并更新了代码。