How to send POST data from Android

public void postData() {
    // // Create a new HttpClient and Post Header
    HttpClient httpclient = new DefaultHttpClient();
    httpPost httppost = new HttpPost ("http://www.site address.com/script.php"));

    try {
        // Use the appropriate data format as shown below 
        List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
        nameValuePairs.add(new BasicNameValuePair("id", "12345"));
        nameValuePairs.add(new BasicNameValuePair("stringdata", "Hi"));
        httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));

        //Execute HTTP Post Request 
        HttpResponse response = httpclient.execute(httppost);

    } } catch (ClientProtocolException e) {
        // // TODO Auto-generated catch block
    } } catch (IOException e) {
        // // TODO Auto-generated catch block
    }
}