OkGo - 3.0 震撼来袭，该库是基于 Http 协议，封装了 OkHttp 的网络请求框架，比 Retrofit 更简单易用，支持 RxJava，RxJava2，支持自定义缓存，支持批量断点下载管理和批量上传管理功能
Multiple samples showing the best practices in camera APIs on Android.
📷SmartCamera 是一个 Android 相机拓展库，能够实时采集并且识别相机内物体边框是否吻合指定区域。SmartCamera is an Android camera extension library，provides a scanning module that can recognizes whether the object's border inside the camera matches the area in real time.
Multiple samples showing the best practices in views-widgets on Android.
Google's common Java, C++ and JavaScript library for parsing, formatting, and validating international phone numbers.
:fire: Android developers should collect the following utils(updating).
Universal UVCCamera library,supporting recording,pushing,etc. // USB摄像头(UVC)视频录制和图片抓拍，支持边推流边录像
library and sample to access to UVC web camera on non-rooted Android device
