收到iOS推送通知时如何打开Notification视图控制器?

本文介绍了收到iOS推送通知时如何打开Notification视图控制器?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！问题描述

我在swift 4.2中工作，并且从FireBase接收推送通知.当我点击Notification时，它会转到主页.但是我想转到Notification页面.

这是Swift4.2，Xcode 9.3，iOS 12.1.过去，我曾经尝试但没有同时前景和无效" 该应用

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool { FirebaseApp.configure() UINavigationBar.appearance().barTintColor = UIColor(red: 0/255.0, green: 85/255.0, blue: 127/255.0, alpha: 1) UINavigationBar.appearance().tintColor = UIColor.white // UINavigationBar.appearance().titleTextAttributes = [NSAttributedString.Key.foregroundColor : UIColor.white,NSAttributedString.Key.font: UIFont(name: "Roboto-Medium", size: 16)!] UIBarButtonItem.appearance().setBackButtonTitlePositionAdjustment(UIOffset(horizontal: 0, vertical: -60), for:UIBarMetrics.default) UINavigationBar.appearance().isTranslucent = false UIApplication.shared.statusBarStyle = .lightContent IQKeyboardManager .shared().isEnabled = true IQKeyboardManager .shared().shouldResignOnTouchOutside = true IQKeyboardManager .shared().isEnableAutoToolbar = false if let notification = launchOptions?[.remoteNotification] as? [String: AnyObject] { // If your app wasn’t running and the user launches it by tapping the push notification, the push notification is passed to your app in the launchOptions let aps = notification["aps"] as! [String: AnyObject] UIApplication.shared.applicationIconBadgeNumber = 0 } if #available(iOS 10.0, *) { UNUserNotificationCenter.current().delegate = self let authOptions: UNAuthorizationOptions = [.alert, .badge, .sound] UNUserNotificationCenter.current().requestAuthorization( options: authOptions, completionHandler: {_, _ in }) } else { let settings: UIUserNotificationSettings = UIUserNotificationSettings(types: [.alert, .badge, .sound], categories: nil) application.registerUserNotificationSettings(settings) } application.registerForRemoteNotifications() let mainview = UIStoryboard(name:"Main", bundle: nil).instantiateViewController(withIdentifier: "HomeViewController") as! HomeViewController let nav = UINavigationController.init(rootViewController: mainview) SideMenu = LGSideMenuController.init(rootViewController: nav) SideMenuView = UIStoryboard(name:"Main", bundle: nil).instantiateViewController(withIdentifier: "SideMenuViewController") as! SideMenuViewController SideMenu.rightViewStatusBarVisibleOptions = .onAll let rect = SideMenuView.view.frame; SideMenuView.view.frame = rect Messaging.messaging().delegate = self // Siren.shared.wail() if launchOptions?[UIApplication.LaunchOptionsKey.remoteNotification] != nil { // Do your task here let dic = launchOptions?[UIApplication.LaunchOptionsKey.remoteNotification] as? NSDictionary let dic2 = dic?.value(forKey: "aps") as? NSDictionary let alert = dic2?.value(forKey: "alert") as? NSDictionary let category = dic2?.value(forKey: "title") as? String // We can add one more key name 'click_action' in payload while sending push notification and check category for indentifying the push notification type. 'category' is one of the seven built in key of payload for identifying type of notification and take actions accordingly if category == "News Added" { /// Set the flag true for is app open from Notification and on root view controller check the flag condition to take action accordingly AppConstants.sharedInstance.userDefaults.set(true, forKey: AppConstants.sharedInstance.kisFromNotificationSecond) } else if category == "1-2-1 notification" { AppConstants.sharedInstance.userDefaults.set(true, forKey: AppConstants.sharedInstance.kisFromNotificationThird) } } return true }

解决方案

用于杀死状态或终止状态:

在 AppDelegate.swift 文件

中定义新属性

var isFromNotification = false

在 AppDelegate.swift 中进行以下更改，并保留其余代码.

if launchOptions?[UIApplication.LaunchOptionsKey.remoteNotification] != nil { isFromNotification = true //other required code }

转到您的 Homepage.swift 文件

override func viewWillAppear(_ animated: Bool) { super.viewWillAppear(animated). let appDelegate = UIApplication.shared.delegate as! AppDelegate if appDelegate.isFromNotification { appDelegate.isFromNotification = false //Push to your notification controler without animation } }

更新:背景和前景状态

如 @Abu Ul Hassan 的评论中所述，以上答案仅适用于杀死"状态./p>

现在，让我们了解有关背景或前景状态的流程.

userNotificationCenter(_:didReceive:withCompletionHandler :) 方法是当用户在后台或前台模式下单击通知时调用.

func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) { //other required code //Get current navigation controller and redirect into notification screen completionHandler() }

如何获取当前的UIViewController或当前的UINavigationController

如果可行，请标记为接受.

谢谢

I am working in swift 4.2, and Push notification receive from FireBase. When I tap the Notification, it go to Homepage. But I want to go to Notification page.

This is Swift4.2, Xcode 9.3, iOS 12.1. In the past , I have tried but not working both Foreground and InActive the app

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool { FirebaseApp.configure() UINavigationBar.appearance().barTintColor = UIColor(red: 0/255.0, green: 85/255.0, blue: 127/255.0, alpha: 1) UINavigationBar.appearance().tintColor = UIColor.white // UINavigationBar.appearance().titleTextAttributes = [NSAttributedString.Key.foregroundColor : UIColor.white,NSAttributedString.Key.font: UIFont(name: "Roboto-Medium", size: 16)!] UIBarButtonItem.appearance().setBackButtonTitlePositionAdjustment(UIOffset(horizontal: 0, vertical: -60), for:UIBarMetrics.default) UINavigationBar.appearance().isTranslucent = false UIApplication.shared.statusBarStyle = .lightContent IQKeyboardManager .shared().isEnabled = true IQKeyboardManager .shared().shouldResignOnTouchOutside = true IQKeyboardManager .shared().isEnableAutoToolbar = false if let notification = launchOptions?[.remoteNotification] as? [String: AnyObject] { // If your app wasn’t running and the user launches it by tapping the push notification, the push notification is passed to your app in the launchOptions let aps = notification["aps"] as! [String: AnyObject] UIApplication.shared.applicationIconBadgeNumber = 0 } if #available(iOS 10.0, *) { UNUserNotificationCenter.current().delegate = self let authOptions: UNAuthorizationOptions = [.alert, .badge, .sound] UNUserNotificationCenter.current().requestAuthorization( options: authOptions, completionHandler: {_, _ in }) } else { let settings: UIUserNotificationSettings = UIUserNotificationSettings(types: [.alert, .badge, .sound], categories: nil) application.registerUserNotificationSettings(settings) } application.registerForRemoteNotifications() let mainview = UIStoryboard(name:"Main", bundle: nil).instantiateViewController(withIdentifier: "HomeViewController") as! HomeViewController let nav = UINavigationController.init(rootViewController: mainview) SideMenu = LGSideMenuController.init(rootViewController: nav) SideMenuView = UIStoryboard(name:"Main", bundle: nil).instantiateViewController(withIdentifier: "SideMenuViewController") as! SideMenuViewController SideMenu.rightViewStatusBarVisibleOptions = .onAll let rect = SideMenuView.view.frame; SideMenuView.view.frame = rect Messaging.messaging().delegate = self // Siren.shared.wail() if launchOptions?[UIApplication.LaunchOptionsKey.remoteNotification] != nil { // Do your task here let dic = launchOptions?[UIApplication.LaunchOptionsKey.remoteNotification] as? NSDictionary let dic2 = dic?.value(forKey: "aps") as? NSDictionary let alert = dic2?.value(forKey: "alert") as? NSDictionary let category = dic2?.value(forKey: "title") as? String // We can add one more key name 'click_action' in payload while sending push notification and check category for indentifying the push notification type. 'category' is one of the seven built in key of payload for identifying type of notification and take actions accordingly if category == "News Added" { /// Set the flag true for is app open from Notification and on root view controller check the flag condition to take action accordingly AppConstants.sharedInstance.userDefaults.set(true, forKey: AppConstants.sharedInstance.kisFromNotificationSecond) } else if category == "1-2-1 notification" { AppConstants.sharedInstance.userDefaults.set(true, forKey: AppConstants.sharedInstance.kisFromNotificationThird) } } return true }

解决方案

For Kill State OR Terminate State:

Define new property in AppDelegate.swift file

var isFromNotification = false

Make below changes in AppDelegate.swift and keep rest of code as it is.

if launchOptions?[UIApplication.LaunchOptionsKey.remoteNotification] != nil { isFromNotification = true //other required code }

Goto your Homepage.swift file

override func viewWillAppear(_ animated: Bool) { super.viewWillAppear(animated). let appDelegate = UIApplication.shared.delegate as! AppDelegate if appDelegate.isFromNotification { appDelegate.isFromNotification = false //Push to your notification controler without animation } }

Update: For Background and Foreground State

Above answer is only work for Kill state as mention in the comment by @Abu Ul Hassan

Now, Let's understand the flow about the background or foreground state.

userNotificationCenter(_:didReceive:withCompletionHandler:) method is called when a user clicks on the notification in background or foreground mode.

func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) { //other required code //Get current navigation controller and redirect into notification screen completionHandler() }