Onesignal.HandleNotificationOpened! The different behavior when delay added and without delay when app is closed.

[ZalesskyMaxim]

Description: Hi everyone. I have issue with opening a page when clicking on push notification when app is closed.

Code (delay commented):

        public App()
        {
            InitializeComponent();
            MainPage = Settings.IsTokenSet
                ? new CustomNavigationPage(new MenuPage())
                : new CustomNavigationPage(new PracticesPage());

            OneSignal.Current.StartInit(ConstantHelper.OneSignalToken)
                .InFocusDisplaying(OSInFocusDisplayOption.None)
                .HandleNotificationOpened(async (result) =>
                {
                    try
                    {
                        if (Application.Current.MainPage == null)
                        {
                            MainPage = Settings.IsTokenSet
                                ? new CustomNavigationPage(new MenuPage(true))
                                : new CustomNavigationPage(new PracticesPage());
                        }

                        if (result.notification.payload.additionalData.ContainsKey(ConstantHelper.AppointmentId) &&
                            result.notification.payload.additionalData.ContainsKey(ConstantHelper.RealName))
                        {
                            CurrentAppointment = result.notification.payload.additionalData[ConstantHelper.AppointmentId].ToString();
                            CurrentDoctorName = result.notification.payload.additionalData[ConstantHelper.RealName].ToString();

                            if (!(Current.MainPage.Navigation.NavigationStack.Last() is ConferencePage))
                            {
                                await Current.MainPage.Navigation.PopToRootAsync();
                                var conferencePage = new ConferencePage();
                                //await System.Threading.Tasks.Task.Delay(1500);
                                await Current.MainPage.Navigation.PushAsync(conferencePage);
                            }
                        }
                        await PopUpService.HideAllLoadings();
                    }
                    catch (Exception e)
                    {
                        Analytics.TrackEvent("Exception: ", new Dictionary<string, string>
                        {
                            {"Message", e.Message},
                            {"StackTrace", e.StackTrace},
                        });
                    }
                })
                .HandleNotificationReceived(notification => { })
                .EndInit();
        }

link on video: https://www.dropbox.com/s/w9p0x8rol8ei5e5/VID_20190401_124708.mp4?dl=0

Code (delay uncommented):

        public App()
        {
            InitializeComponent();
            MainPage = Settings.IsTokenSet
                ? new CustomNavigationPage(new MenuPage())
                : new CustomNavigationPage(new PracticesPage());

            OneSignal.Current.StartInit(ConstantHelper.OneSignalToken)
                .InFocusDisplaying(OSInFocusDisplayOption.None)
                .HandleNotificationOpened(async (result) =>
                {
                    try
                    {
                        if (Application.Current.MainPage == null)
                        {
                            MainPage = Settings.IsTokenSet
                                ? new CustomNavigationPage(new MenuPage(true))
                                : new CustomNavigationPage(new PracticesPage());
                        }

                        if (result.notification.payload.additionalData.ContainsKey(ConstantHelper.AppointmentId) &&
                            result.notification.payload.additionalData.ContainsKey(ConstantHelper.RealName))
                        {
                            CurrentAppointment = result.notification.payload.additionalData[ConstantHelper.AppointmentId].ToString();
                            CurrentDoctorName = result.notification.payload.additionalData[ConstantHelper.RealName].ToString();

                            if (!(Current.MainPage.Navigation.NavigationStack.Last() is ConferencePage))
                            {
                                await Current.MainPage.Navigation.PopToRootAsync();
                                var conferencePage = new ConferencePage();
                                await System.Threading.Tasks.Task.Delay(1500);
                                await Current.MainPage.Navigation.PushAsync(conferencePage);
                            }
                        }
                        await PopUpService.HideAllLoadings();
                    }
                    catch (Exception e)
                    {
                        Analytics.TrackEvent("Exception: ", new Dictionary<string, string>
                        {
                            {"Message", e.Message},
                            {"StackTrace", e.StackTrace},
                        });
                    }
                })
                .HandleNotificationReceived(notification => { })
                .EndInit();
        }

link on video: https://www.dropbox.com/s/qnqnbqll7x94qek/VID_20190401_124918.mp4?dl=0

Can some one explain me, why application work incorrect without Delay? What I doing wrong?

Environment

1. Version Xamarin SDK 3.4.0.
2. Version One Signal 3.2.2

[rgomezp]

Hello, It's difficult for us to pinpoint what could be going wrong here. But to me it looks like there's another part of your code that is setting navigation that ends up executing before or slightly after the ...PushAsync(conferencePage) line. Check the order you are calling things in and keep in mind the fact that things execute asynchronously!

[rgomezp]

Closing due to no response