ViewGroup.removeView(View view)&ViewGroup.removeViewAt(int index)

ViewPager裏的ViewGroup.removeView(View view);與ViewGroup.removeViewAt有什麼區別，爲什麼在自定義的PagerAdapter裏destroyItem方法中，用前者沒有錯誤，用後者，則會出現the specified child already have a parent .you must call removeView on the child‘parent first。#Android# #ViewPager#

API:

• public void removeViewAt(int index)

  Removes the view at the specified position in the group.

  Note: do not invoke this method from View.draw(android.graphics.Canvas), View.onDraw(android.graphics.Canvas),dispatchDraw(android.graphics.Canvas) or any related method.

  Parameters:

  index - the position in the group of the view to remove

  
  

  
  

  
  

  
  

  
  

• public void removeView(View view)

  Note: do not invoke this method from View.draw(android.graphics.Canvas), View.onDraw(android.graphics.Canvas),dispatchDraw(android.graphics.Canvas) or any related method.

  Specified by:

  removeView in interfaceViewManager

  
  

  
  

  
  

  
  

  ViewManager:

  • Interface to let you add and remove child views to an Activity. To get an instance of this class, callContext.getSystemService().

  
  

  
  

  
  

  所以removeView只是將view從activity裏移除，而removeViewAt則是將view從ViewGroup裏移除？

  
  

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