使用swift从app delegate打开视图控制器

Question

我正在尝试创建推送通知，根据从推送中获得的信息确定要打开的视图。

我已经设法从推送中获取信息，但我现在正在努力让视图打开

查看其他堆栈溢出问题我目前有以下内容：

App Delegate完成加载：

     //Extract the notification data
    if let notificationPayload = launchOptions?[UIApplicationLaunchOptionsRemoteNotificationKey] as? NSDictionary {
        // Get which page to open
        let viewload = notificationPayload["view"] as? NSString
        let storyBoard : UIStoryboard = UIStoryboard(name: "Main", bundle:nil)
        //Load correct view
        if viewload == "circles" {

            var viewController = self.window?.rootViewController?.storyboard?.instantiateViewControllerWithIdentifier("Circles") as! UIViewController
            self.window?.rootViewController = viewController

                        }
    }

目前这在var ViewController = self ... line上失败了。

Answer 1

您必须将ViewController StoryBoardId属性设置为下图。

使用swift

中的编码打开viewController

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {

         let mainStoryboardIpad : UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
         let initialViewControlleripad : UIViewController = mainStoryboardIpad.instantiateViewControllerWithIdentifier("Circles") as UIViewController
         self.window = UIWindow(frame: UIScreen.main.bounds)
         self.window?.rootViewController = initialViewControlleripad
         self.window?.makeKeyAndVisible()

         return true
    }

Answer 2

斯威夫特3：

当从当前viewController通过AppDelegate呈现新的viewController时，这是我的首选方法。这样，您在处理推送通知或通用链接时无需完全拆除视图层次结构

if let controller = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "someController") as? SomeController {
    if let window = self.window, let rootViewController = window.rootViewController {
        var currentController = rootViewController
        while let presentedController = currentController.presentedViewController {
            currentController = presentedController
        }
        currentController.present(controller, animated: true, completion: nil)
    }
}

Answer 3

Swift 3

与导航控制器一起显示视图：

let storyboard = UIStoryboard(name: "Main", bundle: nil)
let viewController = storyboard.instantiateViewController(withIdentifier :"InboxViewController") as! InboxViewController
let navController = UINavigationController.init(rootViewController: viewController)

   if let window = self.window, let rootViewController = window.rootViewController {
       var currentController = rootViewController
       while let presentedController = currentController.presentedViewController {
           currentController = presentedController
        }
           currentController.present(navController, animated: true, completion: nil)
   }

Answer 4

首先初始化window

self.window = UIWindow(frame: UIScreen.mainScreen().bounds)
let storyBoard = UIStoryboard(name: "Main", bundle: nil)

在rootViewController班级

中设置AppDelegate

let viewController = storyBoard.instantiateViewControllerWithIdentifier("Circles") as UIViewController
self.window?.rootViewController = viewController
self.window?.makeKeyAndVisible()

Answer 5

有一个快速的4版本

func application(_ application: UIApplication, 
didFinishLaunchingWithOptions launchOptions: 
[UIApplicationLaunchOptionsKey: Any]?) -> Bool {
let mainStoryboardIpad : UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
let initialViewControlleripad : UIViewController = mainStoryboardIpad.instantiateViewController(withIdentifier: "Circles") as UIViewController
            self.window = UIWindow(frame: UIScreen.main.bounds)
            self.window?.rootViewController = initialViewControlleripad
            self.window?.makeKeyAndVisible()

return true}

Answer 6

我说每次想要更改rootViewController时创建UIWindow都是个坏主意。在rootVC进行几次更改后（使用上层解决方案），您的应用程序中一次会有很多UIWindows。

在我看来，更好的解决方案是：

1. 获取新的rootVC：let rootVC = UIStoryboard(name: "StoryboardName", bundle: nil).instantiateViewControllerWithIdentifier("newRootVCIdentifier") as UIViewController
2. 从UIScreen界限设置新rootVC的框架：rootVC.view.frame = UIScreen.mainScreen().bounds
3. 为当前窗口设置新的根控制器（此处为动画）：UIView.transitionWithView(self.window!, duration: 0.5, options: .TransitionCrossDissolve, animations: { self.window!.rootViewController = rootVC }, completion: nil)

完成！

您不需要方法window?.makeKeyAndVisible()，因为此解决方案适用于当前的应用窗口。

Answer 7

Swift 3 SWRevealViewController

    self.window = UIWindow(frame: UIScreen.main.bounds)
    let storyBoard = UIStoryboard(name: "Main", bundle: nil)

    let viewController = storyBoard.instantiateViewController(withIdentifier: "SWRevealViewController") as! SWRevealViewController
    self.window?.rootViewController = viewController
    self.window?.makeKeyAndVisible()

Answer 8

在Swift 3中

        let mainStoryboardIpad : UIStoryboard = UIStoryboard(name: StorybordName, bundle: nil)
        let initialViewControlleripad : UIViewController = mainStoryboardIpad.instantiateViewController(withIdentifier: identifierName) as UIViewController
        if let navigationController = self.window?.rootViewController as? UINavigationController
        {
            navigationController.pushViewController(initialViewControlleripad, animated: animation)
        }
        else
        {
            print("Navigation Controller not Found")
        }

Answer 9

let storyboard = UIStoryboard(name: "Main", bundle: nil)

    let destinationViewController = storyboard.instantiateViewController(withIdentifier: "LandVC") as! LandingPageVC

    destinationViewController.webpageURL = NotificationAdvertisement._htmlpackagePath
    destinationViewController.adID = NotificationAdvertisement._adID
    destinationViewController.toneID = NotificationAdvertisement.toneID

    let navigationController = self.window?.rootViewController as! UIViewController

    navigationController.showDetailViewController(destinationViewController, sender: Any?.self)

Answer 10

SWIFT 4

let storyboard = UIStoryboard(name: "Main", bundle: nil)

    let destinationViewController = storyboard.instantiateViewController(withIdentifier: "LandVC") as! LandingPageVC

    destinationViewController.webpageURL = NotificationAdvertisement._htmlpackagePath
    destinationViewController.adID = NotificationAdvertisement._adID
    destinationViewController.toneID = NotificationAdvertisement.toneID

    let navigationController = self.window?.rootViewController as! UIViewController

    navigationController.showDetailViewController(destinationViewController, sender: Any?.self)