If you'd like more details and explanation about these steps, refer to the Creating a new Cardboard project section Chapter 2, The Skeleton Cardboard Project, and follow along there:
RenderBoxDemoand target Android 4.4 KitKat (API 19) with an Empty Activity.
core.aarlibrary files to your project as new modules, using File | New | New Module....
AndroidManifest.xmlfile as explained in Chapter 2, The Skeleton Cardboard Project, being careful to preserve the
packagename for this project.
build.gradlefile as explained ...