專欄:自定義控件
http://blog.csdn.net/column/details/androidcustomview.html
android字符串進階
http://mikewang.blog.51cto.com/3826268/862643
android視頻
老羅
http://edu.51cto.com/course/course_id-702.html
Material Design
http://www.1sters.com/wikis/material_design_zh/animation/authentic-motion.html