Shiny Push Notification, How Can I set a notification sound?

[nickdavidbhs]

Hi, is the first time that I am implementing push notifications for an app.
And the documentation in Maui is not that complete.

I got so far to use the push Notifications and access the delegate events in both iOS and Android.

But I have a requirement to use a custom sound file when the notification appears in the device, I am trying first in android this.

But even if I add

My sound file in the Android project under Resources/raw

Example of my csproj:

<ItemGroup>
	<AndroidResource Update="Platforms\Android\Resources\raw\notification.wav">
	  <SubType></SubType>
	  <Generator></Generator>
	</AndroidResource>
</ItemGroup>

And add the sound in the fcm push:
The fcm documentation mentions that only need to add the sound file name in the push for android, all good with that, used google documentation for it. Mentioning it as I understand that this forum is not for server side code.

https://firebase.google.com/docs/reference/fcm/rest/v1/projects.messages

{
   "message":{
      "token":"ekUqg2yNRj2-yOFtRuiYE4:APA91bGTeIGYAzfalY6YuKDRJrkUyVjH6dJZsRnLsNGWrdCCRMes0YeavmtWXNps7PEBGHvIHZ9zIGUMV52JwB5KxM3U_4llaECgVkw8Ay4OOpl9aeboeMhqp4taZwQbeKMlWpw_U6O2",
      "data":{
        "ev": "29225"
      },
      "notification":{
        "body":"Emergencia",
        "title":"Red Alerta"
      },
      "android":{
        "notification":{
            "sound": "notification.wav",
            "click_action":"SHINY_PUSH_NOTIFICATION_CLICK",
            "channel_id":"channelExample"
        }
      }
   }
}

The sound is not changing from the default.

Tried to create a channel with a default sound like this in the Android Main Activity:

private void CreateNotificationChannelIfNeeded()
    {
        if (Build.VERSION.SdkInt >= BuildVersionCodes.O)
        {
            CreateNotificationChannel();
        }
    }

    private void CreateNotificationChannel()
    {
        var attributes = new AudioAttributes.Builder()
            .SetUsage(AudioUsageKind.NotificationEvent | AudioUsageKind.Notification | AudioUsageKind.Alarm | AudioUsageKind.Media)
            .Build();
        var soundUri = Android.Net.Uri.Parse($"");

        var channelId = "channelExample";
        var notificationManager = (NotificationManager)GetSystemService(NotificationService);
        var channel = new NotificationChannel(channelId, "channelExample", NotificationImportance.Max);

        channel.SetSound(soundUri, attributes);
        notificationManager.CreateNotificationChannel(channel);
    }

    protected override void OnNewIntent(Intent? intent)
    {
        base.OnNewIntent(intent);
    }

But as in the example shows, I am not sure how to map the notification.wav sound in the path.
Searching in stack overflow or chatgpt got no information so far, only a few methods of Xamarin forms that are not in Maui.

At least I think this way works as how it is right now, I am not adding any sound, but the default sound is not appearing any more, so I think I am only missing the correct mapping

Does any one know how to enable the sound for my notification?