How to make your push notification Open a certain view controller?

Question

I looked on SO but I wasn\'t able to find any question that discusses when you receive a push notification how can you then open a specific view controller. For example if y

Answer 1

This method is called when user tap on the notification. implement in appdelegate

var navigationC: UINavigationController?

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

    if USERDEFAULT.value(forKey: "isLogin") != nil  {
        let tabbarvc = MainStoryboard.instantiateViewController(withIdentifier: "TabBarVC") as! TabBarVC
        self.navigationC = UINavigationController(rootViewController: tabbarvc)
    }else {
        let loginvc = MainStoryboard.instantiateViewController(withIdentifier: "LoginVC") as! LoginVC
        self.navigationC = UINavigationController(rootViewController: loginvc)
    }

    self.navigationC?.setNavigationBarHidden(true, animated: false)
    self.window?.clipsToBounds = true
    self.window?.rootViewController = navigationC
    self.window?.makeKeyAndVisible()

    return true
}

func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any]) {
    print("-------------\nUser info in notification -> \(userInfo)\n-------------")
    let dict = userInfo["aps"] as? NSDictionary ?? [:]
    if USERDEFAULT.value(forKey:"isLogin") != nil{
        let type = dict["type"] as? Int ?? 0
        switch type {
        case 0:
            break
        case 1:
            for vc in self.navigationC!.viewControllers {
                if vc is TabBarVc {
                    let  exam = dict["exam"] as? String ?? ""
                    if exam == ""{
                        let TestVC = MainStoryboard.instantiateViewController(withIdentifier: "TestVC") as! TestVC
                        TestVC.chapterId = dict["chapter_id"] as? String ?? ""
                        TestVC.strSubTitle = dict["chapter"] as? String ?? ""
                        self.navigationC?.isNavigationBarHidden = true
                        self.navigationC?.pushViewController(TestVC, animated: true)
                    }else if exam != ""{
                        let ExamTestVC = MainStoryboard.instantiateViewController(withIdentifier: "ExamTestVC") as! ExamTestVC
                        ExamTestVC.examId = dict["exam_id"] as? String ?? ""
                        ExamTestVC.strSubTitle = dict["exam"] as? String ?? ""
                        self.navigationC?.isNavigationBarHidden = true
                        self.navigationC?.pushViewController(ExamTestVC, animated: true)
                    }
                    return;
                }
            }
            break

        case 2:
            for vc in self.navigationC!.viewControllers {
                if vc is TabBarVc {
                    let VideoListVC = MainStoryboard.instantiateViewController(withIdentifier: "VideoListVC") as! VideoListVC
                    VideoListVC.chapterId = dict["chapter_id"] as? String ?? ""
                    VideoListVC.video_id = dict["video_id"] as? String ?? ""
                    VideoListVC.strSubTitle = dict["chapter"] as? String ?? ""
                    VideoListVC.questionsCount = dict["question_count"] as? Int ?? 0
                    VideoListVC.testCount = dict["test_count"] as? Int ?? 0
                    self.navigationC?.isNavigationBarHidden = true
                    self.navigationC?.pushViewController(VideoListVC, animated: true)
                    return;
                }
            }
            break

        case 3:

            break

        default: break

        }
    }else{
        let loginVC = SignupiPadStoryboard.instantiateViewController(withIdentifier: "LoginVC") as! LoginVC
        SignupStoryboard = SignupiPadStoryboard
        self.navigationC = UINavigationController(rootViewController: loginVC)
    }

}

OR you can direct open view controller like whatsapp chat..etc.

@available(iOS 10.0, *)
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void)
{
    let userInfo = notification.request.content.userInfo
    let dictAps = userInfo["aps"] as! NSDictionary
    print(dictAps)
    let notification_type = dictAps["notification_type"] as? Int ?? 0
    if notification_type == 6{
        if isChatActive == false{
            completionHandler([.alert, .badge, .sound])
        }else{
            if USERDEFAULT.value(forKey:"isLogin") != nil{
                NotificationCenter.default.post(name: NSNotification.Name(rawValue: "ReloadChatMessages"), object: nil, userInfo: (dictAps as! [AnyHashable : Any]))
            }else{
                completionHandler([.alert, .badge, .sound])
            }
        }
    }else{
        completionHandler([.alert, .badge, .sound])
    }

}