RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.

An image loading and caching library for Android focused on smooth scrolling

This project is deprecated and stale. The latest ExoPlayer code is available in https://github.com/androidx/media

IntelliJ IDEA & IntelliJ Platform

A fast dependency injector for Android and Java.

Modular and customizable Material Design UI components for Android

Most popular Mocking framework for unit tests written in Java

Tink is a multi-language, cross-platform, open source library that provides cryptographic APIs that are secure, easy to use correctly, and hard(er) to misuse.

Your Cheat Sheet For Android Interview - Android Interview Questions and Answers

Keep your code spotless

A collection of sample apps to demonstrate how to use Google's ML Kit APIs on Android and iOS

Fluent assertions for Java and Android

Java bindings for Skia

Multiple samples showing the best practices in animation on Android.

App Debugging & Inspection Tool for Android

ConstraintLayout is an Android layout component which allows you to position and size widgets in a flexible way

Test DPC is a sample device policy controller for use with Android Enterprise. It gives developers the ability to see how their app will behave in a managed context such as device owner or within a…

ML Kit Showcase App with Material Design

A sample comparison app between TrafficStats and NetworkStatsHelper for Android