这是我的 xml 文件 http://www.yupptv.com/mobile/androidxml.aspx 我想根据类型显示名称、id、图像、类型和链接的频道,即如果类型是“新闻频道”,我必须显示该类型下的所有频道。我怎样才能做到这一点?这是我的 listactivity 代码
ArrayList<HashMap<String, String>> channelist = new ArrayList<HashMap<String, String>>();
XMLParser parser = new XMLParser();
String xml = parser.getXmlFromUrl(url);// getting XML
Document doc = parser.getDomElement(xml); // getting DOM element
NodeList nl = doc.getElementsByTagName(CHANNEL);
// looping through all item nodes <item>
for (int i = 0; i < nl.getLength(); i++)
{
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
Element e = (Element) nl.item(i);
// adding each child node to HashMap key => valuez
map.put(NAME, parser.getValue(e,NAME ));
Log.i("name"+ NAME, "created");
map.put(ID, parser.getValue(e,ID));
map.put(TYPE,parser.getValue(e,TYPE ));
map.put(LANGUAGE,parser.getValue(e,LANGUAGE ));
map.put(IMAGE,parser.getValue(e,IMAGE));
map.put(LINK,parser.getValue(e,LINK ));
map.put(BANDWIDTH,parser.getValue(e,BANDWIDTH));
map.put(CELLNAPID, parser.getValue(e,CELLNAPID ));
if(map.containsKey(TYPE)&&TYPE=="News Channel")
{
channelist.add(map);
}
}
ListAdapter adapter = new SimpleAdapter(this, channelist,
R.layout.list_item,
new String[] { NAME, ID,TYPE,LANGUAGE,IMAGE,LINK,BANDWIDTH,CELLNAPID}, new int[] {
R.id.name, R.id.id,R.id.type,R.id.language,R.id.image,R.id.link,R.id.bandwidth,R.id.cellnapid });
setListAdapter(adapter);
`
xml解析器.java
public String getXmlFromUrl(String url) {
String xml =null ;
try {
// defaultHttpClient
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();
// e.printStackTrace(err);
}
// return XML
return xml;
}
public Document getDomElement(String xml){
Document doc = null;
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
try {
DocumentBuilder db = dbf.newDocumentBuilder();
doc = db.parse("http://www.yupptv.com/mobile/androidxml.aspx");
} 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 DOM
return doc;
}
public String getValue(Element item, String str)
{
NodeList n = item.getElementsByTagName(str);
return this.getElementValue(n.item(0));
}
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 "";
}
请帮忙
提前致谢