倒计时https://github.com/iwgang/CountdownView

RecyclerView实现带有头部的顶部悬浮置顶布局https://github.com/byd666/CeilingDemo

Android加载Gif和ImageView的通用解决方案：android-gif-drawablehttps://github.com/koral--/android-gif-drawable

方框验证码https://github.com/liuguangli/VerificationCodeInput

标记https://github.com/qstumn/BadgeView

Android webview实现h5视频全屏播放兼容Android7.0，https://github.com/lshAndroid/WebviewTBS/tree/master

Airbnb开源的一个面向 iOS、Android、React Native 的动画库https://github.com/airbnb/lottie-androidjson动画文件网址：https://www.lottiefiles.com/

Android工具类https://github.com/Blankj/AndroidUtilCode

闲鱼Flutter应用框架:Fish Redux https://github.com/alibaba/fish-redux

Bannerhttps://github.com/pinguo-zhouwei/MZBannerView

Banner（仿转转）https://github.com/daimengxiaozhi/MDShockBannerView

相机https://github.com/google/cameraview

TensorFlow-Lite demohttps://github.com/amitshekhariitbhu/Android-TensorFlow-Lite-Example

RecyclerView列表右侧滑（比如删除、收藏）https://github.com/ljm17/SlideRecyclerView

RecyclerView滑动固定/悬停/折叠分组列表标题https://github.com/NIUDONG2015/ZdSectionRecyclerView

健康类的 APP，卷尺功能必不可少  RulerViewhttps://github.com/zjun615/RulerViewhttps://github.com/superSp/RulerViewhttps://github.com/kevalpatel2106/android-ruler-picker

https://github.com/samlss/ClockView

Matisse，知乎开源，简洁，易用，不错的图片选择库。https://github.com/zhihu/Matisse

Android 骨架屏效果https://github.com/sharish/ShimmerRecyclerViewhttps://github.com/ethanhua/Skeletonhttps://github.com/willowtreeapps/spruce-android

美团Android Signature V2 Scheme签名下的新一代渠道包打包神器https://github.com/Meituan-Dianping/walle/一步解决应用加固导致Walle渠道信息失效的自动化脚本工具，自动生成渠道包https://github.com/LeoExer/MCRelease

美图热更新https://github.com/Meituan-Dianping/Robust/blob/master/README-zh.md

广告屏https://github.com/zonezoen/ForGitHubProject

ScrollRecyclerView——RecyclerView 横向 / 纵向滚动网格布局https://github.com/lishide/ScrollRecyclerView

RecyclerView无限循环滚动的完美实现方案https://github.com/Xiasm/LooperLayoutManager

封装bilibili播放器 , 仿抖音视频播放效果https://github.com/Zhaoss/VideoPlayerDemo

比较实用的：无需自定义View，彻底解放shape，selector吧  https://github.com/JavaNoober/BackgroundLibrary

VR看房https://github.com/JY39/GyroscopeImageDemo

Recyclerview实现双列表联动，列表悬停 https://github.com/wustor/GangedRecyclerview