android viewp嵌套Fragment时遇到The specified child already has a parent. You must call removeView()问题的解决

<span style="font-size:18px;">@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
		if (root == null) {
			root = inflater.inflate(R.layout.fragment_pull_listview, container, false);
		} else {
			ViewGroup p = (ViewGroup) root.getParent();
			if (p != null) {
				p.removeAllViewsInLayout();
			}
		}
		return root;
	}</span>