A篇----基础开发
A-02-01: LinearLayout线性布局
https://blog.youkuaiyun.com/kuanglian_ios/article/details/81585816
Android 菜鸟开发A-02-02———RelativeLayout线性布局
https://blog.youkuaiyun.com/kuanglian_ios/article/details/81586365
B篇----高级开发
C篇----项目实战