Develop Reference

How to add a github library to my android project?

I would like to add this library so that I can use it on my android project but I can't figure out how to. I get that I'm supposed to clone it but it doesn't say into which directory I should clone it. I'm also not sure if I should use ant or maven, what those are, and how to do that. Any help would be appreciated.
This is the project I'm hoping to add it to:
https://github.com/mikeoles/swiftset

One more project i which is forked from bauerca/drag-sort-listview
is available for drag-sort-listview and dependency of that project is deployed on maven repository
https://github.com/ened/drag-sort-listview
Gradle is available on mvn repository. check this URL
https://mvnrepository.com/artifact/asia.ivity.android/drag-sort-listview/1.0
Add this to your android project
compile group: 'asia.ivity.android', name: 'drag-sort-listview', version: '1.0'

this project is not a library project instead it is an Android app project so what you have to do is to clone the repo https://github.com/mikeoles/SwiftSet.git and open this as an existing Android project.
FYI, you can check android project structure at this link https://developer.android.com/studio/projects/.

You can make the library support gradle. Or copy code to you project(the project has no update in last 5 years).

How do I use another library in my app?

The title is a little misleading but I honestly don't know how to word it in any other way. This is my project structure:
I want to use the highlighted (fasteranimationscontainer-master) in my current app that I'm working on. I imported it by putting the jar file in my library folder then adding it to my library through Android Studio. But I try to create an object of that imported library, it doesn't show up/import.
I'm still learning how to use android studio so any help would be much appreciated!

1. Library with only the Source Code
To include a library with only the source code (like FasterAnimationsContainer) to your project, you only need to import it as a module from File -> New-> Import Module in Android Studio:
There should be a dialog for the project folder, enter the path where your library reside.
Then you need to add the module to your app build.gradle as a dependency:
android {
...
dependencies {
...
compile project(':fasteranimationscontainer')
...
}
}
Now you can use it in your project.
2. Library from Maven or JCenter
To add dependencies to your project where the library has uploaded to maven or jcenter, you need to modify your app build.gradle file and add extra lines configuring the packages you require. For example, for certain Google or Android, dependencies look like:
android {
...
dependencies {
// Google Play Services
compile 'com.google.android.gms:play-services:6.5.+'
// Support Libraries
compile 'com.android.support:support-v4:22.2.1'
}
}
Try to always read the library README first.
Suggestion:
If you still learning using Android Studio, you can read Using Android Studio. Then read Getting Started with Gradle, because Android Studio is tightly related with Gradle.

Add android-numberpicker backport to Android Studio Gradle project

I want to use this library in my Android Studio project https://github.com/SimonVT/android-numberpicker. I can't for the life of me figure out how to add it to my project. Can someone just outline how this would work? I've only ever added libraries that were contained in jar files.

In build.gradle, use:
dependencies {
compile group: 'net.simonvt', name: 'android-numberpicker-parent', version: '1.0.0'
}

If you are using new gradle build system (and you really should), just add
compile 'net.simonvt:android-numberpicker:1.0.0'
to your build.gradle's dependencies section.

I found a forked version of this library which can be imported from source as a module in Android Studio. It is available here:
https://github.com/heavyplayer/android-numberpicker

How to import Facebook Like Button project into Eclipse

I'm trying to implement a Facebook Like Button in an app and I just found a good library: Facebook Like Button by shamanland.
Now the problem is that I'm using Eclipse and I can't figure out how to import this project correctly in order to use it in the app.
Can anyone help?
Thanks!

That project uses the gradle build system, but eclipse uses the ant system.
Google is leaving ant and migrating to the new gradle system which is used with their new Android Studio IDE. Most of the new libraries also are migrating to gradle due to easy dependency management.
This is a good time to migrate your project to Android Studio.
Download it and when you import your project, it will automatically convert it to gradle.
Then you can easily add gradle libraries to your project's build.gradle, and it will take care of downloading and maintaining them.
For this particular library, you have to add the following to your build.gradle:
repositories {
mavenCentral()
}
dependencies {
compile 'com.shamanland:facebook-like-button:0.1.6'
}
You can also download the Gradle plugin for Eclipse, but it may not be fully compatible with ADT. It's better to use the Android Studio and avoid the headache.
More Info Here

You may download compiled aar file from the Maven Cental.
Just import this aar into your Eclipse project as standalone library.

Why is there no jar for volley(android)?

I use Volley, like others, as networking library in my projects. So in most tutorials, guidelines suggest to clone the project and follow the boilerplate steps to build the project.
Does anybody have any idea, why Google has not built the project into a ready-made Jar file, in order to ease the way?

In order to use Volley in your application, you can use a couple of solutions:
Add following dependency to your app's build.gradle file (according to Android the easiest way):
dependencies {
compile 'com.android.volley:volley:1.1.0'
}
Cloning the Github repository and then set as a library. For a complete description please refer to Android developer.
git clone https://github.com/google/volley

If you are using gradle in Android Studio Volley can be added with one line to the gradle.build file's dependencies.
dependencies {
compile 'com.mcxiaoke.volley:library:1.0.+'
}
If you are using Eclipse, Volley can be added as a library project which will save you having to create a jar.

If you use git, you can add the volley library project as a submodule by using 'git submodule add'
https://android.googlesource.com/platform/frameworks/volley/