本文主要介绍收集了笔者所用过的开源动画库，以及动画学习。
动画学习资源
LoadingDrawable
Some android loading drawable, can be combined with any View as the loading View and Progressbar, and is especially suitable for the loading animation of the RecyclerRefreshLayout.
This project idea is from the link. Perhaps you prefer to use gif way to achieve : GifLoadingView.
参考链接
https://github.com/dinuscxj/LoadingDrawable