【Android】Activity and Fragment's Life Cycle

複習一下，兩張圖說明一切。

ref:
http://blog.csdn.net/jewleo/article/details/8919200
http://cheng-min-i-taiwan.blogspot.tw/2012/12/android-fragments.html
http://hankyang.logdown.com/posts/220707-androidandroid-fragament-life-cycle-life-cycle
Android中保存和恢復Fragment狀態的最好方法 (20160531新增)
Activity和Fragement中onSaveInstanceState()的使用詳解  (20160531新增)