gradle - Best way to incorporate Volley (or other library) into Android Studio project

Question

I've seen different advice on the best way to do this This question covers creating a jar. Elsewhere, I've seen advice to simply copy the volley source into your own project. This section on libraries at android.com would seem the most authoritative. However, after compiling volley, I don't have an aal library, whereas that section says I should have.

So my question is this: I have an existing Android Studio project with a standard layout, and a git repository; what should I do to add volley? Where should I download it to? How should I add it to Android Studio? Which Gradle files, if any, do I need to modify.

Hopefully, for those of you have done this a few times, this should be bread-and-butter stuff, but I haven't been able to find a straightforward description.

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Updating, per Scott Barta's suggestion.

The gradle.build file in the volley repository has this line.

apply plugin: 'android-library'

According to the documentation: "Library projects do not generate an APK, they generate a .aar package (which stands for Android archive)." However, when I build the volley project, no .aar is created.

My feeling is that as Volley is a library project, created by the Android team, it is most probably intended to be generated and used as .aar package. Any advice on whether it would be preferable to generate a .aar, and how to do that, would be appreciated.

Answer 1

As pointed out by others as well, Volley is officially available on Github:

Add this line to your gradle dependencies for volley:

compile 'com.android.volley:volley:1.0.0'

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To install volley from source read below:

I like to keep the official volley repository in my app. That way I get it from the official source and can get updates without depending on anyone else and mitigating concerns expressed by other people.

Added volley as a submodule alongside app.

git submodule add -b master https://github.com/google/volley.git volley

In my settings.gradle, added the following line to add volley as a module.

include ':volley'

In my app/build.gradle, I added a compile dependency for the volley project

compile project(':volley')

That's all! Volley can now be used in my project.

Everytime I want to sync the volley module with Google's repo, i run this.

git submodule foreach git pull