内存检测
leakcanary
https://github.com/square/leakcanary
响应式编程
RxJava
https://github.com/ReactiveX/RxJava
RxAndroid
https://github.com/ReactiveX/RxAndroid
消息通信
EventBus
组件间的消息通信
https://github.com/greenrobot/EventBus
注解框架
butterknife
View注解框架
https://github.com/JakeWharton/butterknife
dagger
Android和Java的依赖注入框架
https://github.com/google/dagger
数据解析
Gson
https://github.com/google/gson
fastjson
https://github.com/alibaba/fastjson
数据库
Realm
移动数据库SQLite&ORM替代者
https://github.com/realm/realm-java
ActiveAndroid
无需写sql语句
https://github.com/pardom/ActiveAndroid
greenDAO
轻量级、快速ORM解决方案
https://github.com/greenrobot/greenDAO
网络访问
OkHttp
良心组织square开源项目
https://github.com/square/okhttp
AndroidAsyncHttp
异步请求http库
https://github.com/loopj/android-async-http
retrofit
又是square出品的精品，该http请求库与dagger、rxjava为越来越多人使用的三剑客
https://github.com/square/retrofit
图片加载
Android-Universal-Image-Loader
非常流行图片加载库
https://github.com/nostra13/Android-Universal-Image-Loader
Glide
https://github.com/bumptech/glide
fresco
facebook出品，必属精品
https://github.com/facebook/fresco
picasso
https://github.com/square/picasso
多媒体操作
android-multipicker-library
图片、视频、文件、音乐、通讯录选择器
https://github.com/coomar2841/android-multipicker-library
Android-Image-Cropper
图片裁剪库
https://github.com/ArthurHub/Android-Image-Cropper
uCrop
https://github.com/Yalantis/uCrop
android-UniversalMusicPlayer
google的跨平台音乐播放器，支持手机、平板、手表和TV，是学习多平台的最好实例
https://github.com/googlesamples/android-UniversalMusicPlayer
PhotoView
图片手势操作放大缩小库
https://github.com/chrisbanes/PhotoView
设备相关
zxing
Java实现的条形码、二维码扫描开源库
https://github.com/zxing/zxing
zbar
C实现的条形码、二维码扫描库
barcodescanner
封装了zxing和zbar，更加简单的使用
https://github.com/dm77/barcodescanner
MVP相关
Android-CleanArchitecture
mvp架构学习实例
https://github.com/android10/Android-CleanArchitecture
android-architecture
google推荐的学习mvp架构的模版
https://github.com/googlesamples/android-architecture
简单、漂亮的日志打印工具
logger
https://github.com/orhanobut/logger
Klog