• Fragement生命周期

image

a、正常情况下

• 进入A页面

  Activity:      onCreate()
  Fragment:      onAttach()
  Fragment:      onCreate()
  Fragment:      onCreateView()
  Fragment:      onActivityCreated()
  Activity:      onStart()
  Fragment:      onStart()
  Activity:      onResume()
  Fragment:      onResume()
  

• A页面 →→ B页面

   Activity:      onPause()
   Fragment:      onStop()
   Activity:      onStop()
  

• B页面 →→ A 页面

    Activity:      onRestart()
    Activity:      onStart()
    Fragment:      onStart()
    Activity:      onResume()
    Fragment:      onResume()
  

b、横竖屏切换

• 正常进入

    Activity:      onCreate()
    Fragment:      onAttach()
    Fragment:      onCreate()
    Fragment:      onCreateView()
    Fragment:      onActivityCreated()
    Activity:      onStart()
    Fragment:      onStart()
    Activity:      onResume()
    Fragment:      onResume()
  

• 横竖屏切换

    Activity:     onPause()
    Fragment:     onStop()
    Activity:     onStop()
    Fragment:     onDestroyView()
    Fragment:     onDetach()
    Activity:     onDestroy()
    Fragment:     onAttach()
    Fragment:     onCreate()
    Activity:     onCreate()
    Fragment:     onCreateView()
    Fragment:     onActivityCreated()
    Fragment:     onAttach()
    Fragment:     onCreate()
    Fragment:     onDestroyView()
    Fragment:     onDetach()
    Fragment:     onCreateView()
    Fragment:     onActivityCreated()
    Activity:     onStart()
    Fragment:     onStart()
    Activity:     onResume()
    Fragment:     onResume()
  

c、前后台切换

• 正常进入

    Activity:      onCreate()
    Fragment:      onAttach()
    Fragment:      onCreate()
    Fragment:      onCreateView()
    Fragment:      onActivityCreated()
    Activity:      onStart()
    Fragment:      onStart()
    Activity:      onResume()
    Fragment:      onResume()
  

• 切换至后台

  Activity:    onPause()
  Fragment:    onStop()
  Activity:    onStop()
  

• 切换至前台

  Activity:    onRestart()
  Activity:    onStart()
  Fragment:    onStart()
  Activity:    onResume()
  Fragment:    onResume()