<== Chapter 2 -- Chapter 4 ==>

Chapter 3 - Directory Layout

The file structure of NDK can be a little overwhelming at first, but everywhere has a spot and reason for that spot. Here is what the top directory of your project should look like

TOP
├───local.properties
│   
├───settings.gradle
│   
├───gradle/
│   
├───build/
│   
└──app
    ├───.externalNativeBuild
    ├───build
    └───src

local.properties

• This file is generated by android studio and shows the path to your SDK and NDK packages for gradle to use when it builds the project with gradle.

settings.gradle

• This is used to include any other projects, modules, etc to the existing project.

gradle/

• This is where more of the gradle wrapper and other gradle related parts live.

build/

• This is where all final build will be exported too.
• app/build and app/.externalNativeBuild also include build results

app/src/

• This directory is the main source of program

src
└───main
    ├───assets
    │   ├─── <image files>
    │   └─── <3D models>
    ├───java
    │   └───com
    │       └───projecttango
    │           └───package
    │               └───name
    │                   ├─── <files.java>
    │                   └─── <files.java>
    ├───jni
    │   ├─── <files.cpp>
    │   └─── <files.cpp>
    ├───res
    │   ├─── <XAML files>
    │   ├─── <XAML files>
    │   └─── <XAML files>
    │
    └─── AndroidManifest.xml

app/src/main

• This is the real heart of your applications, let's break it down

.../assets

• This is where all assets for your project will go
  • This includes, but not limited to images, textures, audio, video, 3D models

.../java/com/...

• This is your java files will go
  • Java source files used to handle Android event calls
  • Java native files to talk to the NDK and C++ files
• Java makes a folder for each part of the package name

.../jni

• This is your C++ and header files
  • This is fully up to you, but this directory acts a local root

.../res

• This are the design files for the layout of the app
  • This folder is in every Android app
  • Android uses XAML for displaying objects

.../AndroidManifest.xml

• This is the summary of your whole project where you declare everything needed
  • If you need to make any setting changes, this is where you will do it

<== Chapter 2 -- Chapter 4 ==>