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Android Fragment 生命週期onCreatView、onViewCreated

要耐著性子看啊!

官網幫助文件連結:
 http://developer.Android.com/guide/components/fragments.html

主要看兩張圖,和跑程式碼

一,Fragment的生命周 

          

onCreateView是建立的時候呼叫,onViewCreated是在onCreateView後被觸發的事件,前後關係

就是fragment中的onCreateView和onViewCreated的區別和聯絡。
且onStart執行時間位於onViewCreated之後

二,與Activity生命週期的對比

     

場景演示 : 切換到該Fragment

11-29 14:26:35.095: D/AppListFragment(7649): onAttach
11-29 14:26:35.095: D/AppListFragment(7649): onCreate
11-29 14:26:35.095: D/AppListFragment(7649): onCreateView
11-29 14:26:35.100: D/AppListFragment(7649): onActivityCreated
11-29 14:26:35.120: D/AppListFragment(7649): onStart
11-29 14:26:35.120: D/AppListFragment(7649): onResume

螢幕滅掉:

11-29 14:27:35.185: D/AppListFragment(7649): onPause
11-29 14:27:35.205: D/AppListFragment(7649): onSaveInstanceState
11-29 14:27:35.205: D/AppListFragment(7649): onStop

螢幕解鎖

11-29 14:33:13.240: D/AppListFragment(7649): onStart
11-29 14:33:13.275: D/AppListFragment(7649): onResume

切換到其他Fragment:
11-29 14:33:33.655: D/AppListFragment(7649): onPause
11-29 14:33:33.655: D/AppListFragment(7649): onStop
11-29 14:33:33.660: D/AppListFragment(7649): onDestroyView

切換回本身的Fragment:

11-29 14:33:55.820: D/AppListFragment(7649): onCreateView
11-29 14:33:55.825: D/AppListFragment(7649): onActivityCreated
11-29 14:33:55.825: D/AppListFragment(7649): onStart
11-29 14:33:55.825: D/AppListFragment(7649): onResume

回到桌面

11-29 14:34:26.590: D/AppListFragment(7649): onPause
11-29 14:34:26.880: D/AppListFragment(7649): onSaveInstanceState
11-29 14:34:26.880: D/AppListFragment(7649): onStop

回到應用

11-29 14:36:51.940: D/AppListFragment(7649): onStart
11-29 14:36:51.940: D/AppListFragment(7649): onResume

退出應用

11-29 14:37:03.020: D/AppListFragment(7649): onPause
11-29 14:37:03.155: D/AppListFragment(7649): onStop
11-29 14:37:03.155: D/AppListFragment(7649): onDestroyView
11-29 14:37:03.165: D/AppListFragment(7649): onDestroy
11-29 14:37:03.165: D/AppListFragment(7649): onDetach

比Activity多了一些生命週期,完整和Activity對接上。

onCreateView是建立的時候呼叫,onViewCreated是在onCreateView後被觸發的事件,前後關係

就是fragment中的onCreateView和onViewCreated的區別和聯絡。
且onStart執行時間位於onViewCreated之後