protected String doInBackground(Void ...arg0) {
// TODO Auto-generated method stub
	String qResult = "";
	HttpClient httpClient = new DefaultHttpClient();
	HttpContext localContext = new BasicHttpContext();
	HttpGet httpGet = new HttpGet("http://api.wunderground.com/api/0440feda70abab5a/geolookup/q/uk/london.xml");

	try {
	HttpResponse response = httpClient.execute(httpGet,
	localContext);
	HttpEntity entity = response.getEntity();

	if (entity != null) {
	InputStream inputStream = entity.getContent();
	Reader in = new InputStreamReader(inputStream);
	BufferedReader bufferedreader = new BufferedReader(in);
	StringBuilder stringBuilder = new StringBuilder();
	String stringReadLine = null;
	while ((stringReadLine = bufferedreader.readLine()) != null) {
	stringBuilder.append(stringReadLine + "\n");
	}
	qResult = stringBuilder.toString();
	}

	} catch (ClientProtocolException e) {
	e.printStackTrace();
	} catch (IOException e) {
	e.printStackTrace();
	}

	Document dest = null;
	DocumentBuilderFactory dbFactory = DocumentBuilderFactory
	.newInstance();
	DocumentBuilder parser;
	try {
	parser = dbFactory.newDocumentBuilder();
	dest = parser
	.parse(new ByteArrayInputStream(qResult.getBytes()));
	} catch (ParserConfigurationException e1) {
	e1.printStackTrace();
	} catch (SAXException e) {
	e.printStackTrace();
	} catch (IOException e) {
	e.printStackTrace();
	}

	temp = sv ("//current_observation/temperature_string", dest);

	Log.d("TEMP", temp);

	return temp;

	}

	public String sv(String query, Node node) {

		String rs = "";

		try {
			Node n = (Node) xPath.evaluate(query, node, XPathConstants.NODE);
			if (n != null) {
				rs = n.getTextContent();
			}
		} catch (Exception e) {
			rs = "";
		}
		return rs;
	}