Interesting developments in cross-platform UI workflow: This app can import a design from Sketch and generate UI code for Android (paid), iOS (paid) and Flutter (free) https://supernova.io/pricing It would be awesome if Kotlin Multiplatform common code could easily connect to such native UIs as are generated by supernova. This would level the playing field in sone regards vd Flutter, with the benefits of Kotlin and of being native. Also, Adobe XD will support Flutter code generation (for free, due to Google support) in “early 2020”. https://theblog.adobe.com/xd-flutter-plugin-generate-dart-code-design-elements/

There is talks that says it will be possible with Jetpack Compose to have something shared. The android team will let us know how to do, but won't develop it.