当应用程序被终止或关闭时，如何在点击推送通知后打开特定控制器？

Question

实际上我想在我的应用程序中做的是，我设置了一个通知闹钟，然后强制终止了应用程序。当通知到来并且我点击通知时，它只是打开应用程序而不是我想要打开的特定控制器（HoroscopeNotificationViewController）。而在设置闹钟后，如果应用程序在后台运行，则在点击通知时，特定的控制器会正常打开和工作。

非常感谢您的帮助。提前致谢。

func application(application: UIApplication,didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
if let _:UILocalNotification = launchOptions?[UIApplicationLaunchOptionsLocalNotificationKey] as? UILocalNotification {

        NSTimer.scheduledTimerWithTimeInterval(3.0, target: self, selector: #selector(AppDelegate.showNotification), userInfo: nil, repeats: false)

let firstCategory:UIMutableUserNotificationCategory = UIMutableUserNotificationCategory()
    firstCategory.identifier = "FIRST_CATEGORY"
}

func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject]) {
    print("MessagesID : \(userInfo["gcm_message_id"]!)")
    print(userInfo)
}

func application(application: UIApplication,
                 handleActionWithIdentifier identifier:String?,
                                            forLocalNotification notification:UILocalNotification,
                                                                 completionHandler: (() -> Void))
{

    if (identifier == "FIRST_ACTION")
    {
        NSNotificationCenter.defaultCenter().postNotificationName("actionOnePressed", object: nil)
    }
    else if (identifier == "SECOND_ACTION")
    {
        NSNotificationCenter.defaultCenter().postNotificationName("actionTwoPressed", object: nil)
    }

    completionHandler()
}

func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject], fetchCompletionHandler completionHandler: (UIBackgroundFetchResult) -> Void) {
    print("MessageId: \(userInfo["gcm_message_id"])")
    print(userInfo)
}

func application(application: UIApplication, didReceiveLocalNotification notification: UILocalNotification) {
    if #available(iOS 8.2, *) {
        print("Function goes here : \(notification.alertTitle)")
    } else {
        // Fallback on earlier versions
    }
    if notification.category == "FIRST_CATEGORY" {
        sleep(8)
        let horoscopeNotificationObj = window?.rootViewController?.storyboard!.instantiateViewControllerWithIdentifier("HoroscopeNotificationViewController") as! HoroscopeNotificationViewController
        window?.rootViewController?.presentViewController(horoscopeNotificationObj, animated: true, completion: nil)
        }
    }

func showNotification() {

    NSNotificationCenter.defaultCenter().postNotificationName("modifyListNotification", object: nil)
}

- Sirsendu Das

---

也许视图控制器尚未加载到内存中。在尝试显示视图控制器之前，请尝试调用myController.view以强制将视图控制器加载到内存中。 - Zhang

张先生，您能告诉我在哪里加载HoroscopeNotificationViewController吗？是在Appdelegate中吗？如果是的话，请详细说明如何加载以及代码应该怎么写。非常感谢您的帮助。 - Sirsendu Das

你不是创建这个应用的人吗？你应该知道它在哪里。按下Cmd-Shift-O打开搜索框，然后输入你的控制器的名称。 - Zhang

不好意思，我的问题是在Appdelegate中加载控制器的位置在哪里。 - Sirsendu Das

@SirsenduDas 如果这个解决方案对您有用，请接受答案！！ - SachinVsSachin

Answer 1

在终止状态或被杀死状态下，如果想要通过点击通知打开特定的视图控制器，需要检查应用委托方法didFinishLaunchingWithOptions参数中的启动选项对象是否存在。请参考以下内容：

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

if let localNotification: UILocalNotification = launchOptions?[UIApplicationLaunchOptionsLocalNotificationKey] as? UILocalNotification { 
    //launchOptions is not nil
//if this will not work then call this below method when application root view controller is ready to handle child view transition or just do a sec delay
                self.application(application, didReceiveLocalNotification: localNotification)
            }

- SachinVsSachin

---

如果这个解决方案对您有用，请接受答案，@Sirsendu Das。 - SachinVsSachin

Answer 2

谢谢大家为解决我的问题所付出的努力。 我不再使用 "NSTimer.scheduledTimerWithTimeInterval(3.0, target: self, selector: #selector(AppDelegate.showNotification), userInfo: nil, repeats: false)" 和 "func showNotification() {NSNotificationCenter.defaultCenter().postNotificationName("modifyListNotification", object: nil)}"，而是使用 instantiateViewControllerWithIdentifier 将控制器从 didFinishLaunchingWithOptions 推到指定的控制器上，这对我有效。 再次感谢 @Sachin 和 @Zhang。

- Sirsendu Das

Answer 3

**

SWIFT 4

**

 let storyBoard : UIStoryboard = UIStoryboard(name: "Main", bundle:nil)
        let nextViewController = storyBoard.instantiateViewController(withIdentifier: "chatView") as! ThreadViewController

        let threadIdToPass = JSON(notificationData)["threadId"]
        nextViewController.threadId = threadIdToPass.intValue
        print("App Delegate thread data \(threadIdToPass.intValue)")
        let navigationController = self.window?.rootViewController as! UINavigationController

        navigationController.show(nextViewController, sender: Any?.self)

- Sachin Rasane

Answer 4

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {

if let localNotifcation: UILocalNotification = launchOptions?[UIApplicationLaunchOptionsKey.localNotification] as? UILocalNotification {

         let NotificationInfo = (launchOptions![UIApplicationLaunchOptionsKey.localNotification])!

     self.application(application, didReceive: NotificationInfo as! UILocalNotification)
}

- Hiren Rathod