Like many others I was excited to hear that Mockito now works with Android and followed this tutorial to see it with my own eyes. Everything seemed fan-flapping-tastic and I
Hi I had the same problem and I found this article really usefull!
http://corner.squareup.com/2012/10/mockito-android.html
The key piece of information is:
To use Mockito on a device or emulator, you’ll need to add three .jar files to your test project’s libs directory: mockito-all-1.9.5.jar, dexmaker-1.0.jar, and dexmaker-mockito-1.0.jar.