Project Explorer in Android Studio

layout: A layout defines the visual structure for a user interface, such as the UI for an Android application . This folder stores Layout files that are written in XML language. You can add additional layout objects or widgets as child elements to gradually build a View hierarchy that defines your layout file.

Android uses the Linux File and Directory Structure which consists of a single root . All drives and partitions are displayed as directories in this tree like structure.

Android Studio stores the projects by default in the home folder of the user under AndroidStudioProjects . The main directory contains configuration files for Android Studio and the Gradle build files.