In order to provide effective test coverage of the ever-increasing range of Android platform versions, screen resolutions and densities (amongst other device properties), automated and scalable build tools like Jenkins become highly advantageous.

This plugin aims to vastly simplify automated testing of Android applications across a wide range of emulated devices by automatically generating emulator instances, starting them up and capturing the logging output, with many device parameters being under your control.

Android Emulator Plugin - Jenkins - Jenkins Wiki.