0. 工具类库

1. Awesome-github-android-ui
   https://github.com/opendigg/awesome-github-android-ui/blob/master/README.md
2. AndroidUtilCode
   https://github.com/Blankj/AndroidUtilCode
3. RxTool
   https://github.com/vondear/RxTool
4. UI
   http://qmuiteam.com/android
5. AndroidUtils
   https://github.com/Blizzard-liu/AndroidUtils
6. Android指纹登录
   https://www.jianshu.com/p/c37b82982cb4
   https://www.jianshu.com/p/1eae12582a31
7. 一款对Toast，Snackbar，Dialog进行优化与兼容封装的开源库

1. Android沉浸式状态栏 轻量 简便

https://www.jianshu.com/p/7d1cb47bb3c6

2. Android屏幕适配解决方案

1. 今日头条屏幕适配方案终极版正式发布!
2. 一种非常好用的Android屏幕适配

3. Android国际化(多语言)实现

https://www.jianshu.com/p/163db59d0774

4. Android 6.0 动态权限

https://github.com/googlesamples/easypermissions
https://github.com/yanzhenjie/AndPermission

5. 多图片选择器

1. 今日头条视频图片选择方案
   https://github.com/zhihu/Matisse
2. PictureSelector 2.0
   一款针对android平台下的图片选择器，支持从相册或拍照选择图片或视频、音频，支持动态权限获取、裁剪(单图or多图裁剪)、压缩、主题自定义配置等功能、适配android 6.0+系统的开源图片选择框架。
   https://github.com/LuckSiege/PictureSelector
3. ImagePicker
   Android自定义相册，完全仿微信UI，实现了拍照、图片选择（单选/多选）、 裁剪 、旋转、等功能
   https://github.com/jeasonlzy/ImagePicker
   新分支，继续维护
   https://github.com/CysionLiu/ImagePicker
4. 支持RxJava2、灵活可高度定制的Android图片选择架构，提供了微信和知乎主题的UI支持
   https://github.com/qingmei2/RxImagePicker
5. NineGridView九宫格
   https://github.com/jeasonlzy/NineGridView
6. PhotoView
   https://github.com/chrisbanes/PhotoView
7. ImageWatcher
   https://www.jianshu.com/p/10b35d1cc0ca

6. 图片压缩

1. https://github.com/nanchen2251/CompressHelper
2. Luban(鲁班) 可能是最接近微信朋友圈的图片压缩算法
   https://github.com/Curzibn/Luban

7. Toast通知

1. https://github.com/GrenderG/Toasty
2. https://github.com/Tapadoo/Alerter

8. ProgressBar

1. https://github.com/Kaopiz/KProgressHUD
2. https://github.com/HotBitmapGG/RingProgressBar
3. https://github.com/81813780/AVLoadingIndicatorView

9. 轮播控件

1. https://github.com/youth5201314/banner
2. https://github.com/nanchen2251/CheerBanner

10. RecyclerView

1. 智能下拉刷新 上拉加载 框架
   https://github.com/scwang90/SmartRefreshLayout
2. https://github.com/CymChad/BaseRecyclerViewAdapterHelper
3. https://github.com/sfsheng0322/MultiType
4. Android FlexboxLayout 聪明的UI布局

11网络

1. https://github.com/koush/AndroidAsync
2. XUpdate 一个轻量级、高可用性的Android版本更新框架
   https://juejin.im/post/5b480b79e51d45190905ef44
3. Android install apk 兼容至 Android 8
   https://www.jianshu.com/p/c0166d270783
4. Android Web库
   https://github.com/Justson/AgentWeb

12 二维码扫描

1. https://github.com/yuzhiqiang1993/zxing
2. https://www.jianshu.com/p/4d70b286f42f
3. https://github.com/wfsxhfcqxyqxct/android-zxingLibrary
4. Adroid-ZBLibrary 中二维码的识别速度也挺快
5. https://github.com/jenly1314/ZXingLite

13 Demo

1. https://github.com/TommyLemon/Android-ZBLibrary