* 添加Fragment顯示: onAttach()-->onCreate()-->onCreateView()-->onActivityCreated()-->onStart()--->onResume();
* home到桌面: onPause() --> onStop();
* 回到應用: onStart() ---> onResume();
* replace其餘Fragment: onPause() --> onStop() --> onDestroyView()
* 返回到自己的Fragment: onCreateView()---> onActivityCreated()-->onStart() --> onResume();
* 退出應用: onPause()-->onStop()-->onDestroyView()-->onDestroy() --> onDetach();it