An analysis of Android studio directory structure

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At the request of your friends, write this article, let us briefly understand the location and purpose of different directories (files) in Android Studio. First look at the simplest directory structure of the next app

"= = good Complex appearance"

OK, let's see, first, put so many files into such three pieces first.
1. Compiling the system (Gradle)
2. Configuration files
3. Application Module

Gradleis a set Groovy of compiled system scripts recommended by Google (you can also use ant, of course), and the specific introduction and documentation can refer to this portal: https://developer.android.com/tools/building/ Plugin-for-gradle.html
If you learn, the project will be Android compiled at a good understanding (in short, very cool ~), its shortcomings are inefficient, and then because there is the existence of kungfu nets, so the bintray load-dependent will be relatively slow.

The words in the above figure gradle are gradle related to some documents.
The use of Android in Gradle Wrapper Gradle a layer of packaging, I guess the reason for this is because the Gradle update speed is too fast, for the sake of compatibility, just out of this set of plans. (Please correct me if you think there is a problem with this conjecture)
gradlewThe relevant documents are and Gradle Wrapper related. Let's make app a list of files other than folders.

Td>.gitignore

file (folder) name	purpose
. Gradle	Gra DLE compilation system, version specified by wrapper
. Idea	files required by the Android Studio IDE
Buil D	where the generated files are stored after compilation
gradle	wrapper where the jar and configuration files are located
git ignore file
build.gradle	gradle compiled related configuration file (equivalent to makefile) /td>
gradle.properties	gradle Related global property settings
gradlew	*n Gradle wrapper executable under IX
graldew.bat	windows gradle wrapper executable
local.properties	Local Property settings (key settings, Android SDK location, etc.), this file is not recommended for uploading to VCs
settings.gradle	and setting related Gradle scripts

These are some of the files that are related to external files. Let's look at the files in the more important app modules.

This is the file directory structure under the app module, describes their use

The

file name	uses
build	compiled text Where the pieces exist (including the resulting apk)
Libs	location of dependent libraries ( jar and aar )
src	The directory where the source code is located
src/main	where the main code is located (src/androidtest) is the test code Location
src/main/assets	Some files that are included with Android
Src/main/java	Most importantly, where our Java code is located
src/main/jnilibs	the default location (. so file) for some of the dynamic libraries in JNI
src/main/res	where the Android resource file is located
src/main/androidmanifest.xml	androidmanifest no Introduction ~
build.gradle	and the project-related gradle configuration, which is equivalent to the makefile of this project, are written in this case for some project dependencies
PROGUARD.P Ro	Code obfuscation configuration file

The above is Android Studio a simple introduction to the directory structure ~

An analysis of Android studio directory structure