优秀开源项目

Android开源图表库：
https://github.com/xcltapestry/XCL-Charts
http://blog.csdn.net/xcl168/article/details/29675613
helloChat:https://github.com/lecho/hellocharts-android
MPAChat: https://github.com/PhilJay/MPAndroidChart

瀑布流：
https://github.com/dodola/android_waterfall
https://github.com/jpardogo/ListBuddies
https://github.com/etsy/AndroidStaggeredGrid

https://github.com/dodola/android_waterfall

https://github.com/maurycyw/StaggeredGridView

PinterestLikeAdapterView

允许非对齐行的GridView
类似Pinterest的瀑布流，允许下拉刷新
项目地址：https://github.com/GDG-Korea/PinterestLikeAdapterView
APP示例：Pinterest等

日期旋转

android-times-square-master