developer.android.com
http://hukai.me/android-training-course-in-chinese/index.html
http://stackoverflow.com/questions/34457924/what-code-do-i-need-to-fix-apache-http-client-removal
http://mooc.guokr.com/course/?order=grading
https://www.class-central.com/subject/cs
coursera, edx, udacity
http://www.ruanyifeng.com/home.html
http://www.xuetangx.com/ 慕课网 http://www.imooc.com/
参照《第一行代码》,用ListView显示水果的图片和名称,并且可以点击某个item,toast当前点击水果的名称。 要求Adapter使用ViewHolder,并且判断ConvertView是否为空