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POHow to parse nested xml and retrieve data in android?
 

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  1. POHow to parse nested xml and retrieve data in android?
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    <p>I am developing an application in which am using rest webservice to get xml from server. After getting the response (in terms of xml format) from server, I am parsing it to string by using Dom parser. Following is the sample structure of my xml response. </p> <pre><code>&lt;appdata&gt; &lt;brand name="Lovely Products"&gt; &lt;product&gt;Hat&lt;/product&gt; &lt;rating&gt;Gloves&lt;/rating&gt; &lt;/brand&gt; &lt;categories&gt; &lt;categorie Table &gt; &lt;sourseUrl Chair&gt; &lt;image available="true" height="400" width="400"&gt; &lt;serverURL http://abcd.xyzpqr.com/images/pi/89 /da/0c=121017011508&amp;=3&gt; &lt;/serverURL&gt; &lt;/sourseUrl&gt; &lt;/categorie&gt; &lt;relatedProducts &gt; &lt;sometag ........&gt; &lt;childtag1.........&gt; &lt;/childtag1&gt; &lt;childtag2.........&gt; &lt;tag1.....&gt; &lt;tag2.....&gt; &lt;/childtag2&gt; &lt;/sometag&gt; &lt;/relatedProducts&gt; .......... .......... .......... &lt;/categories&gt; </code></pre> <p></p> <p>following is my code to Getting XML content by making HTTP Request</p> <pre><code> DefaultHttpClient httpClient = new DefaultHttpClient(); HttpContext localContext = new BasicHttpContext(); HttpHost proxy = new HttpHost("45.28.19.345", 1234); httpClient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY, proxy); HttpGet httpGet = new HttpGet(url); HttpResponse httpResponse = httpClient.execute(httpGet, localContext); HttpEntity httpEntity = httpResponse.getEntity(); xml = getASCIIContentFromEntity(httpEntity);&lt;/pre&gt; </code></pre> <p>To get each xml child element value by passing element node name public String getValue(Element item, String str) { NodeList n = item.getElementsByTagName(str); return this.getElementValue(n.item(0)); }</p> <pre><code>public final String getElementValue( Node elem ) { Node child; if( elem != null){ if (elem.hasChildNodes()){ for( child = elem.getFirstChild(); child != null; child = child.getNextSibling() ){ if( child.getNodeType() == Node.TEXT_NODE ){ return child.getNodeValue(); } } } } return ""; } </code></pre> <p>Here is the way how am retrieving the parsed xml data.</p> <pre><code> String newxml = xml.toString(); Document doc = parser.getDomElement(newxml); // getting DOM element NodeList nl = doc.getElementsByTagName(KEY_ITEM); // looping through all item nodes &lt;item&gt; for (int i = 0; i &lt; nl.getLength(); i++) { // creating new HashMap HashMap&lt;String, String&gt; map = new HashMap&lt;String, String&gt;(); for(int k = 0; k &lt; doc.getChildNodes().getLength(); k++) { Element e = (Element) nl.item(k); // adding each child node to HashMap key =&gt; value map.put(KEY_ID, parser.getValue(e, KEY_ID)); map.put(KEY_NAME, parser.getValue(e, KEY_NAME)); map.put(KEY_COST, "Rs." + parser.getValue(e, KEY_COST)); map.put(KEY_DESC, parser.getValue(e, KEY_DESC)); // adding HashList to ArrayList menuItems.add(map);&lt;/pre&gt; </code></pre> <p>getDomElement(String xml) method is</p> <pre><code> Document doc = null; DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); try { DocumentBuilder db = dbf.newDocumentBuilder(); InputSource is = new InputSource(); if(is != null){ is.setCharacterStream(new StringReader(xml)); doc = db.parse(is); </code></pre> <p>By using this logic am able to retrieve simple xml, but not complex xml like i mentioned above. Can some one give an idea to get the data from that nested xml.</p>
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