Reading Data From Response Which Is In Xml

I am developing an application, in that I have read data which I will get from respose in xml format. So how can implement it. I am not developing web app in my side. But retrievi

Solution 1:

Create a class XMLfunctions

publicclassXMLfunctions {

publicfinalstatic Document XMLfromString(String xml){

    Documentdoc=null;

    DocumentBuilderFactorydbf= DocumentBuilderFactory.newInstance();
    try {

        DocumentBuilderdb= dbf.newDocumentBuilder();

        InputSourceis=newInputSource();
        is.setCharacterStream(newStringReader(xml));
        doc = db.parse(is); 

    } catch (ParserConfigurationException e) {
        System.out.println("XML parse error: " + e.getMessage());
        returnnull;
    } catch (SAXException e) {
        System.out.println("Wrong XML file structure: " + e.getMessage());
        returnnull;
    } catch (IOException e) {
        System.out.println("I/O exeption: " + e.getMessage());
        returnnull;
    }

    return doc;

}


/** Returns element value
  * @param elem element (it is XML tag)
  * @return Element value otherwise empty String
  */publicfinalstatic String getElementValue( Node elem ) {
     Node kid;
     if( elem != null){
         if (elem.hasChildNodes()){
             for( kid = elem.getFirstChild(); kid != null; kid = kid.getNextSibling() ){
                 if( kid.getNodeType() == Node.TEXT_NODE  ){
                     return kid.getNodeValue();
                 }
             }
         }
     }
     return"";
 }

    publicstatic String getTopNewsXML(){    
        Stringline=null;

        try {

            DefaultHttpClienthttpClient=newDefaultHttpClient();
            HttpPosthttpPost=newHttpPost("url");

            HttpResponsehttpResponse= httpClient.execute(httpPost);
            HttpEntityhttpEntity= httpResponse.getEntity();
            line = EntityUtils.toString(httpEntity);

        } catch (UnsupportedEncodingException e) {
            line = "<results status=\"error\"><msg>Can't connect to server</msg></results>";
        } catch (MalformedURLException e) {
            line = "<results status=\"error\"><msg>Can't connect to server</msg></results>";
        } catch (IOException e) {
            line = "<results status=\"error\"><msg>Can't connect to server</msg></results>";
        }
        String st= ParseXMLNode(line,"doc");
        return st;

    }

publicstatic String ParseXMLNode(String str,String node){
     StringxmlRecords= str;
     Stringresults="";
     String[] result = newString [10];
     StringBuffersb=newStringBuffer();
     try {
         DocumentBuilderFactorydbf= DocumentBuilderFactory.newInstance();
         DocumentBuilderdb= dbf.newDocumentBuilder();
         InputSourceis=newInputSource();
         is.setCharacterStream(newStringReader(xmlRecords));
         Documentdoc= db.parse(is);
         NodeListnlist= doc.getElementsByTagName(node);

         sb.append("<results count=");
         sb.append("\"10\"");
         sb.append(">\r\n");


         for (inti=0; i < nlist.getLength(); i++) {
                Nodenode1= nlist.item(i);
                if (node1.getNodeType() == Node.ELEMENT_NODE) {
                    Elementelement= (Element) node1;
                    NodeListnodelist= element.getElementsByTagName("str");
                    Elementelement1= (Element) nodelist.item(0);
                    NodeListtitle= element1.getChildNodes();

                    System.out.print((title.item(0)).getNodeValue());
                    sb.append("<result>\r\n");
                        sb.append("<title>");
                            sb.append(title.item(0).getNodeValue().trim());
                        sb.append("</title>\r\n");

                    sb.append("</result>\r\n");
                    result[i] = title.item(0).getNodeValue();

                   }
            }
         sb.append("</results>");
     } catch (Exception e) {
         System.out.println("Exception........"+results );
         e.printStackTrace();
     }
     return sb.toString();
     }
}

publicstaticintnumResults(Document doc) {
    Noderesults= doc.getDocumentElement();
    intres= -1;
    try {
        res = Integer.valueOf(results.getAttributes().getNamedItem("count")
                .getNodeValue());
    } catch (Exception e) {
        res = -1;
    }
    return res;
}

publicstatic String getValue(Element item, String str) {
    NodeListn= item.getElementsByTagName(str);
    return XMLfunctions.getElementValue(n.item(0));
}

in your activity

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

        String xml = XMLfunctions.getTopNewsXML();
        Document doc = XMLfunctions.XMLfromString(xml);

        int numResults = XMLfunctions.numResults(doc);
        Log.d(LOG_TAG, "Number of Results: " + numResults);
        if ((numResults <= 0)) {
            Toast.makeText(ParentActivity.this, "No Result Found",Toast.LENGTH_LONG).show();
            returnnull;
        }

        NodeList nodes = doc.getElementsByTagName("result");

        for (int i = 0; i < nodes.getLength(); i++) {
            HashMap<String, String> map = new HashMap<String, String>();

            Element e = (Element) nodes.item(i);
            map.put("title", XMLfunctions.getValue(e, "title"));
            mylist.add(map);
        }
        return mylist;

Then you can put the data in the list

Solution 2:

You can use the built-in DOM parser.

Link: http://developer.android.com/reference/javax/xml/parsers/DocumentBuilder.html

Tutorial: http://www.ibm.com/developerworks/opensource/library/x-android/#list9

Solution 3:

For a comfortable parsing look at

here