https://www.cnblogs.com/abao0/p/6726763.html
https://www.jianshu.com/p/3baddcf948af
https://blog.csdn.net/hjh200507609/article/details/77508842
https://www.jianshu.com/p/05cb14b7776d
https://www.cnblogs.com/androidsj/p/6077706.html
https://www.oschina.net/project/tag/342/android-ui/
https://github.com/peng8350/JPTabBar 一个和留学定位规划一样的首页布局（中间一个加号图片）
https://github.com/qstumn/BadgeView
https://www.oschina.net/project/tag/342/android-ui
