If you are looking to parse an xml file in android here are its steps :-

Step 1:-Getting XML content by making HTTP request

public String getXmlFromUrl(String url)
  {
    String xml = null;
     try
       {
         DefaultHttpClient httpClient = new DefaultHttpClient();
         HttpPost httpPost = new HttpPost(url);
         HttpResponse httpResponse = httpClient.execute(httpPost);
         HttpEntity httpEntity = httpResponse.getEntity();
          xml = EntityUtils.toString(httpEntity);
        } 
    catch (UnsupportedEncodingException e)
       {
         e.printStackTrace();
        } 
    catch (ClientProtocolException e)
       {
         e.printStackTrace();
        } 
    catch (IOException e) 
      {
        e.printStackTrace();
       }
      return xml;
    }

step 2:- Parsing XML content and getting DOM element of xml.

public Document getDomElement(String xml)
 {
  Document document = null;
  DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
    try 
     {
       DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();
        InputSource is = new InputSource();
        is.setCharacterStream(new StringReader(xml));
        document = documentBuilder.parse(is);
       } 
     catch (Exception e)
       {
       Log.e("Error: ", e.getMessage());
       return null;
       }
    return document;
  }

Step 3:- Get each xml child element value by passing element node name.

 public String getValue(Element item, String str)
  {     
    NodeList nodeList = item.getElementsByTagName(str);       
     return this.getElementValue(nodeList.item(0));
   }
 public final String getElementValue( Node nodeElement )
  {
     Node child;
     if( nodeElement != null)
      {
         if (nodeElement.hasChildNodes())
           {
               for( child = nodeElement.getFirstChild(); child != null; child = child.getNextSibling() )
                 {
                    if( child.getNodeType() == Node.TEXT_NODE  )
                      {
                         return child.getNodeValue();
                      }
                 }
              }
          }
             return "";
      } 

Step:-4 Code in your main activity

String NODE_NAME="item";
String CHILD_ONE="id"
String CHILD_TWO="name"
ArrayList<String> itemList = new ArrayList<String>();
XMLParser parser = new XMLParser();
String xml = parser.getXmlFromUrl(URL); // getting XML
Document document = parser.getDomElement(xml); // getting DOM element
NodeList nodeList = document.getElementsByTagName(NODE_NAME);
for (int i = 0; i < nodeList.getLength(); i++)
   {
      Element element = (Element) nodeList.item(i);
       String itemid=parser.getValue(element,CHILD_ONE)) // 1st child value of node
       String itemName=parser.getValue(element,CHILD_TWO))//2nd child value of node
       String myString=itemName+" has id "+itemid;
       itemList.add(myString);
     }

Now you have the list of childItems , you can use them in your own way.