Resolved: .Net Maui iOS app with Push Notifications WillPresentNotification or DidReceiveNotificationResponse never gets called

In this post, we will see how to resolve .Net Maui iOS app with Push Notifications WillPresentNotification or DidReceiveNotificationResponse never gets called

Question:

I’m able to call RegisterForRemoteNotifications(); from the AppDelegate to get the Token. I’m then using an APN server I built to update Apple Passes. I’m sending a message with the correct payload, headers etc…, but nothing ever happens.
I’m assuming that something needs to be added to MauiProgram.cs in order to get this to work.
Seeing as I have my own APN server, I really don’t want to use Firebase or Azure Notification Hub at this time. A Firebase method is provided in the following link.

[https://cedricgabrang.medium.com/firebase-push-notifications-in-net-maui-ios-2f4388bf1ac][1]

Seeing as Local Notifications and Remote Notifications use the same methods, I modeled my code after this example.
https://github.com/xamarin/xamarin-forms-samples/tree/main/LocalNotifications
Here is my code with some decorations.

        // Called if app is in the foreground.
        [Export("userNotificationCenter:willPresentNotification:withCompletionHandler:")]
        public override void WillPresentNotification(UNUserNotificationCenter center, UNNotification notification, Action<UNNotificationPresentationOptions> completionHandler)
        {
            SentrySdk.CaptureMessage("WillPresentNotification = " + "yes");

            ProcessNotification(notification);
            completionHandler(UNNotificationPresentationOptions.Alert);
        }

        // Called if app is in the background, or killed state.
        [Export("userNotificationCenter:didReceiveNotificationResponse:withCompletionHandler:")]
        public override void DidReceiveNotificationResponse(UNUserNotificationCenter center, UNNotificationResponse response, Action completionHandler)
        {
            SentrySdk.CaptureMessage("DidReceiveNotificationResponse = " + "yes");

            if (response.IsDefaultAction)
            {
                ProcessNotification(response.Notification);
            }
            completionHandler();
        }

NOTE: I’m compiling my iOS app using an Azure DevOps Pipeline. I’ve added both the Development cert and the Push Notification cert to the Keychain. I don’t see the Push Notification cert included in the [email protected] Task. Push Notifications are enabled and configured in the Provision Profile. Perhaps there is a problem with the build process and how the Keychain installs/uses the all the certs.
Does anyone know how to make this work? Seems like this should be pretty easy to do.

Best Answer:

I finally got this working using the Firebase.plugin for .Net Maui. My APN server still doesn’t work. I’m using the Firebase console to send messages.
I used these directions.
https://cedricgabrang.medium.com/firebase-push-notifications-in-net-maui-ios-2f4388bf1ac
If you are having issues getting Firebase.plugin to build on iOS, take a look at this issue. https://github.com/TobiasBuchholz/Plugin.Firebase/issues/51
Here is the code I used in my Azure Pipeline to combine the two Apple Certs. https://stackoverflow.com/a/74105887/5360237

If you have better answer, please add a comment about this, thank you!

Source: Stackoverflow.com

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