Ich habe eine XML-Daten wie unten

<toplevel>
<CompleteSuggestion>
<suggestion data="madonna"/>
</CompleteSuggestion>
<CompleteSuggestion>
<suggestion data="madonna like a prayer"/>
</CompleteSuggestion>
<CompleteSuggestion>
<suggestion data="madonna like a virgin"/>
</CompleteSuggestion>
<CompleteSuggestion>
<suggestion data="madonna vogue"/>
</CompleteSuggestion>
<CompleteSuggestion>
<suggestion data="madonna la isla bonita"/>
</CompleteSuggestion>
<CompleteSuggestion>
<suggestion data="madonna frozen"/>
</CompleteSuggestion>
<CompleteSuggestion>
<suggestion data="madonna holiday"/>
</CompleteSuggestion>
<CompleteSuggestion>
<suggestion data="madonna music"/>
</CompleteSuggestion>
<CompleteSuggestion>
<suggestion data="madonna gimme all your love"/>
</CompleteSuggestion>
<CompleteSuggestion>
<suggestion data="madonna celebration"/>
</CompleteSuggestion>
</toplevel>

Ich analysiere dies mit einer XMLParser-Klasse unten

 public class XMLParser {

    // constructor
    public XMLParser() {

    }

    /**
     * Getting XML from URL making HTTP request
     * @param url string
     * */
    public String getXmlFromUrl(String url) {
        String xml = null;

        try {
            // defaultHttpClient
            DefaultHttpClient httpClient = new DefaultHttpClient();
            HttpGet httpPost = new HttpGet(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
        return xml;
    }

    /**
     * Getting XML DOM element
     * @param XML string
     * */
    public Document getDomElement(String xml){
        Document doc = null;
        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        try {

            DocumentBuilder db = dbf.newDocumentBuilder();

            InputSource is = new InputSource();
                is.setCharacterStream(new StringReader(xml));
                doc = db.parse(is); 

            } catch (ParserConfigurationException e) {
                Log.e("Error: ", e.getMessage());
                return null;
            } catch (SAXException e) {
                Log.e("Error: ", e.getMessage());
                return null;
            } catch (IOException e) {
                Log.e("Error: ", e.getMessage());
                return null;
            }

            return doc;
    }

    /** Getting node value
      * @param elem element
      */
     public final String getElementValue( Node elem ) {
         Node child;
         if( elem != null){
             Log.e("in element","element");
             if (elem.hasChildNodes()){
                 Log.e("in child","child nodes");
                 for( child = elem.getFirstChild(); child != null; child = child.getNextSibling() ){
                       Log.e("in for","for loop");
                     child = elem.getFirstChild();
                     if( child.getNodeType() == Node.TEXT_NODE  ){
                         Log.e("in if condition","if cond");
                         return elem.getNodeValue();
                     }
                 }
             }
         }
         return "";
     }

     /**
      * Getting node value
      * @param Element node
      * @param key string
      * */
     public String getValue(Element item, String str) {     
            NodeList n = item.getElementsByTagName(str);        
            return this.getElementValue(n.item(0));
        }
}

Hier ist mein Aktivitätscode:

ArrayList<HashMap<String, String>> menuItems = new ArrayList<HashMap<String, String>>();

    XMLParser parser = new XMLParser();
    String xml = parser.getXmlFromUrl(URL); // getting XML

    Log.e("string xml","hello"+xml);
    Document doc = parser.getDomElement(xml); // getting DOM element

    NodeList nl = doc.getElementsByTagName(KEY_ITEM);
    // looping through all item nodes <item>
    for (int i = 0; i < nl.getLength(); i++) {
        // creating new HashMap
        Log.e("no. of items",""+i);
        HashMap<String, String> map = new HashMap<String, String>();
        Element e = (Element) nl.item(i);
        // adding each child node to HashMap key => value

        map.put(KEY_NAME, parser.getValue(e, KEY_NAME));

        Log.e("names","hi"+parser.getValue(e, KEY_NAME));


        menuItems.add(map);


    }

Ich habe festgestellt, dass mein getElementValue (Node elem) in XmLParser immer einen leeren String zurückgibt. Ich glaube, ich muss diese Methode ändern. Ich habe versucht, einige der Aussagen zu ändern, aber keine Lösung gefunden.

Bitte schlagen Sie für die Lösung.