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canonical libwebsockets.org networking library
This light-weight library provides images with letter/text like the Gmail app. It extends the Drawable class thus can be used with existing/custom/network ImageView classes. Also included is a flue…
[DEPRECATED] Easily integrate Camera features into your Android app
Cognitive Services Face client library for Android.
A RecyclerView that implements pullrefresh and loadingmore featrues.you can use it like a standard RecyclerView
RxJava 2 Android Examples - How to use RxJava 2 in Android
A categorized collection of Android Open Source Projects, More powerful web version:
Realm is a mobile database: a replacement for SQLite & ORMs
show images,banner Android 广告（banner）图片轮播、图片浏览、仿微信大图查看控件（支持视频和gif图片）、支持动态添加数据
Fork自Google开源的Android串口通信Demo，修改成Android Studio项目
Picture Selector Library for Android or 图片选择器
兼容android11、android 10，相机拍照，相册选择(单选/多选)，文件夹图片选择(单选/多选)，视频选择，视频图片多类型复杂选择，各界面根据状态栏颜色智能适配状态栏字体颜色变色为深色或浅色，根据使用场景智能适配沉浸式状态栏，内部处理运行时权限，支持Glide/Picasso/Imageloader等所有图片加载框架库的带默认勾选选中图片的能填充自定义广告的自定义Ui相机相册图片…
AndroidImageEdit 安卓设备上图形编辑开源控件，支持磨皮美白 自定义贴图 图片滤镜 图片旋转 图片剪裁 文字贴图 撤销 回退 等操作
Multitask、MultiThread(MultiConnection)、Breakpoint-resume、High-concurrency、Simple to use、Single/NotSingle-process
Implementation of Instagram with Material Design (originally based on Emmanuel Pacamalan's concept)
基于插件式的Android换肤框架，支持app内和或者外部插件式提供资源的换肤方案，无需重启Activity。[仅供参考原理，暂不维护]
Android Bluetooth Low Energy (BLE) Fast Development Framework. It uses simple ways to filter, scan, connect, read ,write, notify, readRssi, setMTU, and multiConnection.
Create a Bluetooth Scanner With Android's Bluetooth API