ios - 在 SWIFT 2.x 中以编程方式调用带有 NavigationController 的 UIViewController

Question

当我选择动态快捷方式时，我想以编程方式调用在 Storyboard 中设计的具有 NavigationController 的 UIViewController。

我在 Main.storyboard 中设计了 UIViewController 及其 NavigationController，并放置了一个 Storyboard ID(我称之为 MyUICtrlStoryID)

为了创建动态快捷方式，我在 AppDelegate 中编写了以下代码:

@available(iOS 9.0, *)
    func application(application: UIApplication, performActionForShortcutItem shortcutItem: UIApplicationShortcutItem, completionHandler: Bool -> Void) {




        let handledShortCutItem = shortcutItem.type // handleShortCutItem(shortcutItem)

        if handledShortCutItem == "3DTouchShourtcutID"{

            self.window = UIWindow(frame: UIScreen.mainScreen().bounds)

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

//FirstViewcontroller UI will be called as root UIView
            let initialViewControlleripad : FirstViewController = storyboard.instantiateViewControllerWithIdentifier("FirstViewControllerID") as! FirstViewController



            initialViewControlleripad.go2MySecondUI = true   //set this check variable in order to launch my second UI View from the first one.

            self.window = UIWindow(frame: UIScreen.mainScreen().bounds)
            self.window?.rootViewController = initialViewControlleripad
            self.window?.makeKeyAndVisible()
        }
      }

在我的 FistViewController 的 viewWillAppear 函数中

if #available(iOS 9.0, *) {

                let shortcutItem = UIApplicationShortcutItem(type: "3DTouchShortcutID",
                    localizedTitle:    "This action",
                    localizedSubtitle: "action description",
                    icon: UIApplicationShortcutIcon(type: UIApplicationShortcutIconType.Add),
                    userInfo: nil)


                UIApplication.sharedApplication().shortcutItems = [shortcutItem]

                //check if FirstViewControler had to call the second UI 
                if go2MySecondUI == true {
                    self.go2MySecondUI = false


                            let newViewCtrl = self.storyboard?.instantiateViewControllerWithIdentifier("MyUICtrlStoryID") as? SecondViewController
                           // call second UI view

                   dispatch_async(dispatch_get_main_queue()) {
                       self.presentViewController(newViewCtrl!, animated: true, completion: nil)
                   }
                                              //  }
                }

这段代码工作正常:当我通过 3d 触摸选择我的快捷方式时，我的第二个 View Controller 将被调用并且它的 UIView 将被显示..但没有它的导航 Controller 。否则，如果我通过 Storyboard中设计的按钮调用我的 secondUIcontroller(具有相关的 segue 回调)，secondUIView 将正确显示导航 Controller ..

怎么了？

Answer 1

您需要将您的第一个 View Controller 嵌入到 UINavigationController 中。所以在 AppDelegate 中你的代码应该是:

@available(iOS 9.0, *)
    func application(application: UIApplication, performActionForShortcutItem shortcutItem: UIApplicationShortcutItem, completionHandler: Bool -> Void) {




        let handledShortCutItem = shortcutItem.type // handleShortCutItem(shortcutItem)

        if handledShortCutItem == "3DTouchShourtcutID"{

            self.window = UIWindow(frame: UIScreen.mainScreen().bounds)

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

//FirstViewcontroller UI will be called as root UIView
            let initialViewControlleripad : FirstViewController = storyboard.instantiateViewControllerWithIdentifier("FirstViewControllerID") as! FirstViewController



            initialViewControlleripad.go2MySecondUI = true   //set this check variable in order to launch my second UI View from the first one.
            let navigationController = UINavigationController(rootViewController: initialViewControlleripad)

            self.window = UIWindow(frame: UIScreen.mainScreen().bounds)
            self.window?.rootViewController = navigationController
            self.window?.makeKeyAndVisible()
        }
      }

然后在 FirstViewController 的 viewWillAppear 中，您需要推送第二个 View Controller 而不是当前 View Controller 。所以你的代码应该是:

if #available(iOS 9.0, *) {

                let shortcutItem = UIApplicationShortcutItem(type: "3DTouchShortcutID",
                    localizedTitle:    "This action",
                    localizedSubtitle: "action description",
                    icon: UIApplicationShortcutIcon(type: UIApplicationShortcutIconType.Add),
                    userInfo: nil)


                UIApplication.sharedApplication().shortcutItems = [shortcutItem]

                //check if FirstViewControler had to call the second UI 
                if go2MySecondUI == true {
                    self.go2MySecondUI = false


                            let newViewCtrl = self.storyboard?.instantiateViewControllerWithIdentifier("MyUICtrlStoryID") as? SecondViewController
                           // call second UI view

                           self.navigationController?.pushViewController(newViewCtrl, animated: true)

                                              //  }
                }