Opened sample app WatchFace in Android Studio. When try to run build fails saying:
Unexpected top-level exception … Multiple dex files
Execution failed for task ‘:Application:dexDebug’
Found that in 2 build.gradle files (wearable & application modules) there were references to 2 versions of same file:
compile ‘com.google.android.gms:play-services-fitness:8.3.0’
compile ‘com.google.android.gms:play-services-wearable:8.4.0’
Changed so all references are to 8.4.0 and build now works.