Android™ How to Program, Second Edition

9.2.4. Versioning Your App

It’s important to include a version name (shown to the users) and a version code (an integer version number used internally by Google Play) for your app, and to consider your strategy for numbering updates. For example, the first version name of your app might be 1.0, minor updates might be 1.1 and 1.2, and the next major update might be 2.0. The version code is an integer that typically starts at 1 and is incremented by 1 for each new version of your app that you post. For additional guidelines, see Versioning Your Applications at

http://developer.android.com/tools/publishing/versioning.html