Thanks for the comments @mstralka and @richgabrielli! Sorry to hear you ran into trouble with the tutorial project.
Despite that error message, both the starter project and final project build and run successfully in Android Studio 3.5.
That error message re: “Unsupported Modules Detected” is an Android Studio project issue that does not affect the project being built, so you can ignore it. You can make it go away by re-downloading the tutorial zip files, then deleting the .idea sub-folder of the starter and/or final project before opening them in Android Studio 3.5.
With respect to AndroidX, I totally agree that it’s time to migrate to it based on Google’s recommendation, and most of our tutorials are using it now. But the support library 28.0.0 is still supported. You can switch the Snowy app to AndroidX by running the the “Migrate to AndroidX…” refactoring on the project in Android Studio 3.5; I did this and it worked like a charm.
Thanks again, and let us know if you have any further comments or thoughts!