bug_ _fragment_“The specified child already has a parent. You must call removeView＂的解决以及产生的原因

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@Override

public View onCreateView(LayoutInflater inflater, ViewGroup container,

        Bundle savedInstanceState) {

    LinearLayout drawerListViewContainer = (LinearLayout) inflater.inflate(

            R.layout.fragment_navigation_drawer, container, false);

    mDrawerListView = (ListView)drawerListViewContainer.findViewById(R.id.drawer_list);

    mDrawerListView

            .setOnItemClickListener(new AdapterView.OnItemClickListener() {

                @Override

                public void onItemClick(AdapterView<?> parent, View view,

                        int position, long id) {

                    selectItem(position);

                }

            });

    SimpleAdapter mDrawerAdapter =  new SimpleAdapter(getActivity(),getDrawerItems(),R.layout.drawer_item,new String[]{"img","title"},new int[]{R.id.item_icon,R.id.item_name});

    mDrawerListView.setAdapter(mDrawerAdapter);

    mDrawerListView.setItemChecked(mCurrentSelectedPosition, true);

    return mDrawerListView;

}

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    private void addViewInner(View child, int index, LayoutParams params,

            boolean preventRequestLayout) {

        if (mTransition != null) {

            // Don‘t prevent other add transitions from completing, but cancel remove

            // transitions to let them complete the process before we add to the container

            mTransition.cancel(LayoutTransition.DISAPPEARING);

        }

        if (child.getParent() != null) {

            throw new IllegalStateException("The specified child already has a parent. " +

                    "You must call removeView() on the child‘s parent first.");

        }

......