Design patterns implemented in Java

All Algorithms implemented in Java

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

A powerful 🚀 Android chart view / graph view library, supporting line- bar- pie- radar- bubble- and candlestick charts as well as scaling, panning and animations.

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Render After Effects animations natively on Android and iOS, Web, and React Native

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

🔥 Android developers should collect the following utils(updating).

Bind Android views and callbacks to fields and methods.

🔥下拉刷新、上拉加载、二级刷新、淘宝二楼、RefreshLayout、OverScroll，Android智能下拉刷新框架，支持越界回弹、越界拖动，具有极强的扩展性，集成了几十种炫酷的Header和 Footer。

Event bus for Android and Java that simplifies communication between Activities, Fragments, Threads, Services, etc. Less code, better quality.

Desktop/Android/HTML5/iOS Java game development framework

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

视频播放器（IJKplayer、ExoPlayer、MediaPlayer），HTTPS，16k page size，支持弹幕，外挂字幕，支持滤镜、水印、gif截图，片头广告、中间广告，多个同时播放，支持基本的拖动，声音、亮度调节，支持边播边缓存，支持视频自带rotation的旋转（90,270之类），重力旋转与手动旋转的同步支持，支持列表播放 ，列表全屏动画，视频加载速度，列表小窗口支持拖…

RxJava bindings for Android

A fast dependency injector for Android and Java.

An Android library for managing images and the memory they use.

A circular ImageView for Android

A standalone Java Decompiler GUI

Android Transition animations explanation with examples.

Cute view animation collection.

Image Cropping Library for Android

An Android TabLayout Lib

DEPRECATED

[DEPRECATED] A powerful library that manage Fragment for Android

Ultra Pull to Refresh for Android. Support all the views.

Views and Drawable for displaying animated GIFs on Android

This is a library with components of Android L to you use in android 2.2

A powerful and lightweight plugin framework for Android

Android filters based on OpenGL (idea from GPUImage for iOS)