This is an Android Heroku buildpack.
Example usage:
$ ls
app/build.gradle
$ heroku create --stack cedar --buildpack https://gitlab.futurehax.com/FutureHax/androidbuildpack.git
$ git push heroku master
...
-----> Heroku receiving push
-----> Fetching custom buildpack
-----> Android Gradle app detected
-----> Found a build.gradle
The buildpack will detect that your app has an /app/build.gradle in the root. If this file has contents, The Android SDK will be installed and configured.