https://code.google.com/p/scalaforandroid/
Does anyone with Scala on Android experience know if it is bogged down by the same size and performance issues? I assume they are running against the same problems on parallel tracks. Just curious.
Scala does suffer a similar size issue where the Scala standard library is a few megs and you don't really want to ship that around with your app. You can use ProGuard to strip out the parts of the Scala standard library you aren't using. This is baked into build tools (like jberkel's excellent android-plugin for sbt) so it's usually seamless.
FWIW, I've got a couple Android apps on the Play store written in Scala.
The performance is not bad. ProGuard is a must. The problem for me is compile time.