Read versionName from build.gradle in bash

Question

Is there a way to read the value versionName from the build.gradle file of an Android project to use it in bash?

More precisely: How can I read this value from the file and use it in a Travis-CI script? I'll use it like

# ANDROID_VERSION=???
export GIT_TAG=build-$ANDROID_VERSION

I set up a Travis-CI like described in this post https://stackoverflow.com/a/28230711/1700776.

My build.gradle: http://pastebin.com/uiJ0LCSk

Answer 1

Expanding on Khozzy's answer, to retrieve versionName of your Android package from the build.gradle, add this custom task:

task printVersionName {
    doLast {
        println android.defaultConfig.versionName
    }
}

and invoke it so:

gradle -q printVersionName