Design patterns implemented in Java

Everything you need to know to get the job.

Google core libraries for Java

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

Halo 是一款强大易用的开源建站工具，从个人博客、知识库，到企业官网、在线商城，Halo 都能助您轻松实现，一站式满足您的多样化建站需求。

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

ZXing ("Zebra Crossing") barcode scanning library for Java, Android

🔥 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.

A Java serialization/deserialization library to convert Java Objects into JSON and back

Video players (IJKplayer, ExoPlayer, MediaPlayer), HTTPS, 16k page size, danmaku (bullet chat) support, external subtitles, support for filters, watermarks, and GIF screenshots, pre-roll and mid-ro…

一款面向泛前端产品研发全生命周期的效率平台。

RxJava bindings for Android

Implementation of ImageView for Android that supports zooming, by various touch gestures.

Tinker is a hot-fix solution library for Android, it supports dex, library and resources update without reinstall apk.

A fast dependency injector for Android and Java.

Most popular Mocking framework for unit tests written in Java

A circular ImageView for Android

提高 Android UI 开发效率的 UI 库

Picture Selector Library for Android or 图片选择器

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.

This is a picker view for android , support linkage effect, timepicker and optionspicker.（时间选择器、省市区三级联动）

Very spicy additions to the Java programming language.

🔥🔥🔥Banner 2.0 来了！Android广告图片轮播控件，内部基于ViewPager2实现，Indicator和UI都可以自定义。

Stetho is a debug bridge for Android applications, enabling the powerful Chrome Developer Tools and much more.

greenDAO is a light & fast ORM solution for Android that maps objects to SQLite databases.

Image Cropping Library for Android

Matrix is a plugin style, non-invasive APM system developed by WeChat.