Android Fragment

http://androidstation.pixnet.net/blog/post/227190520-fragment%E5%9F%BA%E6%9C%AC%E5%85%A5%E9%96%80%E6%95%99%E5%AD%B8
跟android-support-v4.jar有關

http://androidstation.pixnet.net/blog/post/233440249

FragmentPagerAdapter
https://usit-yuan.blogspot.tw/2013/10/fragmentpageradapter-fragment.html