在 Android 中添加 ListView 子项文本

我创建了一个 RSS 阅读器，用于列出列表视图中的项目。我也想在每个项目下面有一个日期，但我不知道该怎么做。我需要某人的帮助才能使子项文本显示从 RSS 源检索到的 pubDate。

这是我的类的代码：

public class RSSReader extends Activity implements OnItemClickListener
{
    public final String RSSFEEDOFCHOICE = "http://app.calvaryccm.com/mobile/android/v1/devos";

    public final String tag = "RSSReader";
    private RSSFeed feed = null;

    /** Called when the activity is first created. */

    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        setContentView(R.layout.main);

        // go get our feed!
        feed = getFeed(RSSFEEDOFCHOICE);

        // display UI
        UpdateDisplay();
    }

    private RSSFeed getFeed(String urlToRssFeed)
    {
        try
        {
            // setup the url
           URL url = new URL(urlToRssFeed);

           // create the factory
           SAXParserFactory factory = SAXParserFactory.newInstance();
           // create a parser
           SAXParser parser = factory.newSAXParser();

           // create the reader (scanner)
           XMLReader xmlreader = parser.getXMLReader();
           // instantiate our handler
           RSSHandler theRssHandler = new RSSHandler();
           // assign our handler
           xmlreader.setContentHandler(theRssHandler);
           // get our data via the url class
           InputSource is = new InputSource(url.openStream());
           // perform the synchronous parse           
           xmlreader.parse(is);
           // get the results - should be a fully populated RSSFeed instance, or null on error
           return theRssHandler.getFeed();
        }
        catch (Exception ee)
        {
            // if we have a problem, simply return null
            System.out.println(ee.getMessage());
            System.out.println(ee.getStackTrace());
            System.out.println(ee.getCause());
            return null;
        }
    }
    public boolean onCreateOptionsMenu(Menu menu) 
    {
        super.onCreateOptionsMenu(menu);
        menu.add(Menu.NONE, 0, 0, "Refresh");
        Log.i(tag,"onCreateOptionsMenu");
        return true;
    }

    public boolean onOptionsItemSelected(MenuItem item){
        switch (item.getItemId()) {
        case 0:

            Log.i(tag,"Set RSS Feed");
            return true;
        case 1:
            Log.i(tag,"Refreshing RSS Feed");
            return true;
        }
        return false;
    }

    private void UpdateDisplay()
    {
        TextView feedtitle = (TextView) findViewById(R.id.feedtitle);
        TextView feedpubdate = (TextView) findViewById(R.id.feedpubdate);
        ListView itemlist = (ListView) findViewById(R.id.itemlist);


        if (feed == null)
        {
            feedtitle.setText("No RSS Feed Available");
            return;
        }

        if(feedtitle != null)
            feedtitle.setText(feed.getTitle());
        if(feedpubdate != null)
            feedpubdate.setText(feed.getPubDate());


        ArrayAdapter<RSSItem> adapter = new ArrayAdapter<RSSItem>(this,android.R.layout.simple_list_item_1,feed.getAllItems());

        itemlist.setAdapter(adapter);

        itemlist.setOnItemClickListener(this);

        itemlist.setSelection(0);
    }

    @Override
    public void onItemClick(AdapterView parent, View v, int position, long id)
    {
        //Log.i(tag,"item clicked! [" + feed.getItem(position).getTitle() + "]");       

        Intent itemintent = new Intent(this,ShowDescription.class);

        Bundle b = new Bundle();
        b.putString("title", feed.getItem(position).getTitle());
        b.putString("description", feed.getItem(position).getDescription());
        b.putString("link", feed.getItem(position).getLink());
        b.putString("pubdate", feed.getItem(position).getPubDate());

        itemintent.putExtra("android.intent.extra.INTENT", b);

        startActivity(itemintent);
    }
}

这是我的XML：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
 <TextView  
android:layout_width="fill_parent" 
android:layout_height="wrap_content" 
android:text="Android RSSReader"
android:id="@+id/feedtitle"/>
<TextView  
android:layout_width="fill_parent" 
android:layout_height="wrap_content" 
android:text=""
android:id="@+id/feedpubdate"/>
<ListView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="@+id/itemlist"

android:fastScrollEnabled="true"/>    
 </LinearLayout>

这就是它现在在Eclipse中的样子：

这是它运行的样子：

如何使子项文本显示从RSS源检索到的pubDate？