This page describes how to import an Android Library Project into your Unity Project.
.androidlibextension, add this extension to the folder. For example,
Unity now supports the Android Library Project and will include it in the final project that GradleAn Android build system that automates several build processes. This automation means that many common build errors are less likely to occur. More info
See in Glossary uses to build your application. For more information, see How Unity builds Android applications.