Understanding MAUI Single Project model and running in VS2022

[munkii]

We have an XF solution that I am trying to port to MAUI. Previously we had OurApp.iOS and OurApp.Android and most platform specifc code was in each of those target projects. In MAUI we have a Single Project approach, and we have put most of the platform specific stuff under Platforms/Android and Platforms/iOS that seems to work well.

We also have a AppleHealth integration that is fully developed in iOS and empty in Android, previously we would have had an AppleHealth.iOS project and an AppleHealth.Android project now we have a single project with both "implementations" under "Platforms" folder.

I have two implementations of a class called AppleHealthService each under Platforms/Android and Platforms.iOS, both in the same namespace OurApp.AppleHealthKit. I am getting a build error saying OurApp.AppleHealthKit already contains a definition for AppleHealthService.

When I am deplying to an Android device and have selected a target framework of "net8.0-android34.0" I would expect VS to not try and build the files under the Platforms/iOS folder but it does. Have I totally misunderstood how Single Project is supposed to work?