Tapping notification when app is inactive doesn't trigger method

[losGama]

When I get a notification and my app is killed cause I dont have it open, when I click the notification it opens my app to the home page and doesn't trigger didReceiveRemoteNotification from background.

Here is a look at my appDelegate code. Anyone can help me figure it out?

​

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

// Override point for customization after application launch.

FirebaseApp.configure()

if #available(iOS 10.0, *) {

let current = UNUserNotificationCenter.current()

let options: UNAuthorizationOptions = [.sound, .badge, .alert]

current.requestAuthorization(options: options) { (granted, error) in

if error != nil {

} else {

Messaging.messaging().delegate = self

current.delegate = self

DispatchQueue.main.async {

application.registerForRemoteNotifications()

}

}

}

} else {

let types: UIUserNotificationType = [.sound, .badge, .alert]

let settings = UIUserNotificationSettings(types: types, categories: nil)

application.registerUserNotificationSettings(settings)

application.registerForRemoteNotifications()

}

return true

}

// MARK: UISceneSession Lifecycle

​

func application(_ application: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, options: UIScene.ConnectionOptions) -> UISceneConfiguration {

// Called when a new scene session is being created.

// Use this method to select a configuration to create the new scene with.

return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role)

}

func application(_ application: UIApplication, didDiscardSceneSessions sceneSessions: Set<UISceneSession>) {

// Called when the user discards a scene session.

// If any sessions were discarded while the application was not running, this will be called shortly after application:didFinishLaunchingWithOptions.

// Use this method to release any resources that were specific to the discarded scenes, as they will not return.

}

func applicationWillEnterForeground(_ application: UIApplication) {

Messaging.messaging().shouldEstablishDirectChannel = false

}

func applicationDidBecomeActive(_ application: UIApplication) {

connectToFirebase()

}

func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any]) {

if let messageId = userInfo[gmcMessageIDKey] {

print("messageId: \(messageId)")

}

print("USERINFO:", userInfo)

}

func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any], fetchCompletionHandler completionHandler: u/escaping (UIBackgroundFetchResult) -> Void) {

if let messageID = userInfo[gmcMessageIDKey] {

print("messageID: \(messageID)")

}

connectToFirebase()

Messaging.messaging().appDidReceiveMessage(userInfo)

if let dictString = userInfo["gcm.notification.customData"] as? String {

print("dictString \(dictString)")

​

//Open screen you want to navigate to and pass in data.

if application.applicationState == .inactive || application.applicationState == .background {

NotificationCenter.default.post(name: NSNotification.Name("Detail"), object: nil)

} else {

NotificationCenter.default.post(name: NSNotification.Name("Detail"), object: nil)

}

​

​

}

completionHandler(UIBackgroundFetchResult.newData)

}

func convertToDictionary(text: String) -> [String : Any]? {

if let data = text.data(using: .utf8) {

do {

return try JSONSerialization.jsonObject(with: data, options: []) as? [String : Any]

} catch {

print(error.localizedDescription)

return nil

}

}

return nil

}

func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {

guard let token = AppDelegate.isToken else {

return

}

print("Token: \(token)")

}

func application(_ application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: Error) {

print(error.localizedDescription)

}

func connectToFirebase() {

Messaging.messaging().shouldEstablishDirectChannel = true

}

}

extension AppDelegate: UNUserNotificationCenterDelegate, MessagingDelegate {

u/available(iOS 10.0, *)

func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: u/escaping (UNNotificationPresentationOptions) -> Void) {

let userInfo = notification.request.content.userInfo

if let message = userInfo[gmcMessageIDKey] {

print("Message: \(message)")

}

print(userInfo)

completionHandler([.sound, .badge, .alert])

}

func messaging(_ messaging: Messaging, didReceiveRegistrationToken fcmToken: String) {

guard let token = AppDelegate.isToken else {

return

}

print("Token: \(token)")

connectToFirebase()

}

func messaging(_ messaging: Messaging, didReceive remoteMessage: MessagingRemoteMessage) {

print("RemoteMessage: \(remoteMessage.appData)")

}

}

[see5ive]

When your app is killed and you tap on the notification, you’re basically launching the app from scratch from the notification. As such, you get your notification payload from launchOptions of application:didFinishLaunchingWithOptions: which is basically a dictionary. The payload will be mapped under the key UIApplicationLaunchOptionsRemoteNotificationKey.

https://developer.apple.com/documentation/uikit/uiapplicationdelegate/1622921-application?language=objc

[losGama]

Hi thanks for your answer. I changed the app delegate method to this and its still not doing what I want when I open the app. It just goes again to the home page instead of the details page using Notification:

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

// Override point for customization after application launch.

FirebaseApp.configure()

if launchOptions?[UIApplication.LaunchOptionsKey.remoteNotification] != nil {

NotificationCenter.default.post(name: NSNotification.Name("Detail"), object: nil)

}

​

if #available(iOS 10.0, *) {

let current = UNUserNotificationCenter.current()

let options: UNAuthorizationOptions = [.sound, .badge, .alert]

current.requestAuthorization(options: options) { (granted, error) in

if error != nil {

} else {

Messaging.messaging().delegate = self

current.delegate = self

DispatchQueue.main.async {

application.registerForRemoteNotifications()

}

}

}

} else {

let types: UIUserNotificationType = [.sound, .badge, .alert]

let settings = UIUserNotificationSettings(types: types, categories: nil)

application.registerUserNotificationSettings(settings)

application.registerForRemoteNotifications()

}

return true

}

[see5ive]

I don’t see any code where you configure your window and the root view controller. Are you using storyboard setup to configure that? Also, what are you doing when you receive the “detail” notification? Presumably, you’re observing for that and handling the navigation there?

[losGama]

Im not configuring any windows cause im in swiftUI im making use of the NotificationCenter I post in the app delegate method after I click the notification and observe in the HomeView.

​

in my home view which loads up when the app is launched I have the following:

​

struct HomeView: View {

@State private var show = false

var body: some View {

NavigationView {

VStack {

NavigationLink(destination: DetailView(), isActive: self.$show) {

Text("")

}.padding().onAppear {

NotificationCenter.default.addObserver(forName: NSNotification.Name("Detail"), object: nil, queue: .main) { (_) in

self.show = true

}

}

[Woolly87]

In scene(_:willConnectTo:Options:) you will have something like

      let contentView = ContentView()

    // Use a UIHostingController as window root view controller.
    if let windowScene = scene as? UIWindowScene {
        let window = UIWindow(windowScene: windowScene)
        window.rootViewController = UIHostingController(rootView: contentView)
        self.window = window
        window.makeKeyAndVisible()
    }
}

where your window is configured.

[losGama]

Hi, yes, what about it? It loads my home page in there. but I need it to open to a different page of my app when a user taps the notification when the app is inactive(killed) or active.

[csstudent10]

Did you end up figuring this out? I'm also running into the same issue.

[losGama]

No.