svn checkout http://moten-util.googlecode.com/svn/android-scala-sample android-scala-sample
You need the ANDROID_HOME environment variable to use the maven-android-plugin. On my machine this is
ANDROID_HOME='/opt/android/android-sdk-linux_x86'
cd to the android-scala-sample directory and type
mvn clean package
This will compile and test the scala source and build an android binary using ProGuard to strip out unused classes (needed to remove the bulk of the scala dependency).
If you have the emulator running then deploy to the emulator with
mvn android:deploy
This sample app is just a hello world app for you to modify as you like.