Why AppNotification does not show on desktop randomly?

Question

Why AppNotification does not show on desktop randomly?

aluzi liu 486

I have a WinUI3 project, I send notification using this code:

            var builder = new AppNotificationBuilder()
                .AddArgument("Action", "NewToast")
                .AddArgument("ActionData", "ToastData");

            builder.SetAppLogoOverride(new Uri("d:\\photo\\228-01.jpg"), AppNotificationImageCrop.Circle);

            builder.SetScenario(AppNotificationScenario.IncomingCall);
            builder.AddText("test001")
            .AddText("text002")
            .AddText("text003");
            AppNotificationManager.Default.Show(builder.BuildNotification());

The code works, but some time the notification will not show on desktop, and some time it will show on desktop, which is very confusing...

NOTE:Whether show on desktop or not, the notification will always listed in action center

Jeanine Zhang-MSFT 11,356 Reputation points Microsoft External Staff

2023-06-15T01:56:34.87+00:00

Have you completed register to handle an app notification before displaying an app notification? In your App.xaml file, register for AppNotificationManager::Default().NotificationInvoked, then call AppNotificationManager::Default().Register. The order of these calls matters.

For more details, I suggest you could refer to the Doc: Quickstart: App notifications in the Windows App SDK
aluzi liu 486 Reputation points

2023-06-15T03:31:55.01+00:00

I did.
When I click the notification in action center, if app is not running, then app will launch automatically, everything is good, just some it will not show on desktop.

I upload the project to github:

https://github.com/aluzi992/WinUITest2/tree/master/NotificationTest
Jeanine Zhang-MSFT 11,356 Reputation points Microsoft External Staff

2023-06-15T08:32:59.8933333+00:00

There is no issue with your code. According to your description, It is not related to development, there is no way to solve the issue via the code. It seems that the issue caused by some conflict within the system. I suggest you could try to restart Windows Push Notification System Service.

You could post the issue to the Microsoft Support Community for better help.

Or you could also try to feedback the issue in the Feedback Hub.

Your answer

Jeanine Zhang-MSFT 11,356 Reputation points Microsoft External Staff

2023-06-15T01:56:34.87+00:00

Have you completed register to handle an app notification before displaying an app notification? In your App.xaml file, register for AppNotificationManager::Default().NotificationInvoked, then call AppNotificationManager::Default().Register. The order of these calls matters.

For more details, I suggest you could refer to the Doc: Quickstart: App notifications in the Windows App SDK
aluzi liu 486 Reputation points

2023-06-15T03:31:55.01+00:00

I did.
When I click the notification in action center, if app is not running, then app will launch automatically, everything is good, just some it will not show on desktop.

I upload the project to github:

https://github.com/aluzi992/WinUITest2/tree/master/NotificationTest
Jeanine Zhang-MSFT 11,356 Reputation points Microsoft External Staff

2023-06-15T08:32:59.8933333+00:00

There is no issue with your code. According to your description, It is not related to development, there is no way to solve the issue via the code. It seems that the issue caused by some conflict within the system. I suggest you could try to restart Windows Push Notification System Service.

You could post the issue to the Microsoft Support Community for better help.

Or you could also try to feedback the issue in the Feedback Hub.

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Why AppNotification does not show on desktop randomly?

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