Update Windows Local Notifications docs

[jfversluis]

Added a note that scheduled notifications are not supported at this time.

A feature request has been opened here: microsoft/WindowsAppSDK#5050

Fixes #2743

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[true-perfect-code]

@jfversluis

You should write in the documentation that there is a way to implement the local scheduled notification in MAUI via UWP.Notifications Nuget until a WinAppSDK support is complete for local notification.

You can use existing instructions from UWP.Notifications implementation, but there are 2 adjustments:

1. in App.xaml.cs under public App() => see: https://github.com/true-perfect-code/MauiApp1_UWPNotifications/blob/master/MauiApp1_UWPNotifications/Platforms/Windows/App.xaml.cs
2. when calling the notification => see: https://github.com/true-perfect-code/MauiApp1_UWPNotifications/blob/master/MauiApp1_UWPNotifications/Components/Pages/Home.razor

As a reminder:
Local scheduled MAUI Windows notification cannot be implemented with WinAppSDK because the method for it is missing. When using UWP.Notifications, the problem was to get the Windows start arguments, because there is no OnActivated event in MAUI anymore (was replaced by OnLaunched and OnLaunched does not get Windows parameters from the notification).

If someone needs scheduled notifications for MAUI, then you have to use UWP.Notifications Nuget (as of January 2025) and there is a workaround from @whiskhub to get the ID sent by Windows. However, we all hope that the WinAppSDK team will implement a complete migration from UWP.Notification to windowsAppSDK so that WinAppSDK can be used for local notification in MAUI (as is also planned by Microsoft)

You can find a working example here: https://github.com/true-perfect-code/MauiApp1_UWPNotifications

pc

[MartyIX]

Probably not $0?