# Android Library Module
###### tags: `Android` `Module`
[TOC]

## Why Use Modules?
Library modules are beneficial:

* When you're building multiple apps that use some of the same components, such as activities, services, or UI layouts.
* When you're building an app that exists in multiple APK variations, such as a free and paid version and you need the same core components in both.

## New Module
>**1. File > New > New Module**
**STEP 1**
[color=orange]

>**2. Select Module Type > Name > Finish**
**STEP 2**
[color=lightgreen]

>**3. Module will automatically be built in project folder**
**STEP 3**
[color=lightblue]

>**4. Add any class you want to use for whole project**
**STEP 4**
[color=pink]

>**5. Add dependancy in build.gradle**
**STEP 5**
[color=violet]

>**6. You will be able to get the class in the module from project.**
**STEP 6**
[color=gray]

## Delete Module
>**1. File > Project Structure > Modules**
[color=orange]

>**2. Deduct or add Modules > Apply > Ok**
[color=gray]

## APP VS Library
An app is what a user uses. The output of an app module is an APK, the package of an Android application.

A library is a collection of code that represents something that you want to use in multiple applications or otherwise want to keep in a separate "container" than the rest of the app code. The output of a library module is an AAR.