The specified child already has a parent. You must call removeView() on the child's parent first问题

今天遇到了一个问题使用frangment出现了The specified child already has a parent. You must call removeView() on the child’s parent first的错误，在stackoverflow找到了解决的方法：

…

private LayoutInflater mInflater;

private WeakReference mRootView = null;

…

@Override

public View onCreateView(final LayoutInflater inflater, final ViewGroup container, final Bundle savedInstanceState)

{

if (inflater != null)

mInflater = inflater;

else

mInflater = LayoutInflater.from(getActivity());

View rootView = mRootView == null ? null : mRootView.get();

if (rootView != null)

{

final ViewParent parent = rootView.getParent();

if (parent != null && parent instanceof ViewGroup)

((ViewGroup) parent).removeView(rootView);

}

else

{

rootView = mInflater.inflate(R.layout.fragment_test, null, false);

mRootView = new WeakReference(rootView);

}

return rootView;

}