Dark theme is not automatically updated

[RodBarnes]

I've completed the workshop and implemented the AppThemes section, but the app doesn't pick up the change except when starting. Specifically, I can run the app -- it comes up in light theme styles. Then, change the device to Dark Theme -- but the app doesn't change. If I close the app and then re-open it, it picks up the theme change then and displays the dark theme styles. I've gone back through the section and compared to the "Finish" project but can't see anything I've done differently.

[jamesmontemagno]

Which OS specifically?

Does the finish project work or no?

[bgaprogrammer]

Which OS specifically?

Does the finish project work or no?

I did see the same issue for both Windows and Mac OS (in fact I reported it to you throught Mastodon) no matter the project folder (chapter 1... N) and also the Finish one. All of them fails.

[jamesmontemagno]

Gotcha! Testing it out here, i think something is broke perhaps in the most recent release... testing out.

[RodBarnes]

(Sorry for the delayed response.) I first noticed it on Android but it affects Windows, too.

Were you able to duplicate this? It looks correct as I've walked through the code and read the docs on theming. Maybe a defect in the generated code?

[jamesmontemagno]

I am going to double check. It looks like there is an open bug. Everythign works well for me on Windows, but Android does not. The team is looking into it right now dotnet/maui#11299

[towianisci]

Yep ,I'm running into the same bug. Great course though.
The theme will only update if you close the application and re-open it after making the system change from one team to the other. It's almost as if it's not receiving notification of change for system theme.

https://learn.microsoft.com/en-us/dotnet/maui/user-interface/system-theme-changes?view=net-maui-7.0

I'm developing on the macOS system. Trade it as a desktop app an iOS app, and a android app. Each did not change the mean when system change the mean for the various OSs.