2019独角兽企业重金招聘Python工程师标准>>>
TODO 待整理
https://stackoverflow.com/questions/24155956/difference-between-focusable-and-focusableintouchmode
https://stackoverflow.com/questions/23799064/what-is-the-difference-between-setfocusable-and-setfocusableintouchmode
https://segmentfault.com/a/1190000011509975
https://android-developers.googleblog.com/2008/12/