Automatic versioning of Android build using git describe with Gradle

Question

I have searched extensively, but likely due to the newness of Android Studio and Gradle. I haven't found any description of how to do this. I want to do basically exactly what is described in this post, but with Android Studio, Gradle and Windows rather than Eclipse and Linux.

Answer 1

Put the following in your build.gradle file for the project. There's no need to modify the manifest directly: Google provided the necessary hooks into their configuration.

def getVersionCode = { ->     try {         def code = new ByteArrayOutputStream()         exec {             commandLine 'git', 'tag', '--list'             standardOutput = code         }         return code.toString().split("\n").size()     }     catch (ignored) {         return -1;     } }  def getVersionName = { ->     try {         def stdout = new ByteArrayOutputStream()         exec {             commandLine 'git', 'describe', '--tags', '--dirty'             standardOutput = stdout         }         return stdout.toString().trim()     }     catch (ignored) {         return null;     } } android {     defaultConfig {         versionCode getVersionCode()         versionName getVersionName()     } } 

Note that if git is not installed on the machine, or there is some other error getting the version name/code, it will default to what is in your android manifest.