RSS Feed解析并在ListView中显示结果，然后在单击帖子时显示正文

Question

My Goal is optain a rss feed from a url of my choice, pull the data, list the different posts in a listview and upon click, Open up the post and display the body text of the post in a layout file.

So far currently i can pull the rss, display posts in list, and i have no action when post is clicked.

New Objective: Open new activity to display Post name and post body text from rss feed.

AndroidRssReader.java

 public class AndroidRssReader extends ListActivity {

private RSSFeed myRssFeed = null;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();

    StrictMode.setThreadPolicy(policy); 
    try {
        //http://www.gov.hk/en/about/rss/govhkrss.data.xml
        URL rssUrl = new URL("http://feeds2.feedburner.com/greentechmedia-all-content.rss");
        SAXParserFactory mySAXParserFactory = SAXParserFactory.newInstance();
        SAXParser mySAXParser = mySAXParserFactory.newSAXParser();
        XMLReader myXMLReader = mySAXParser.getXMLReader();
        RSSHandler myRSSHandler = new RSSHandler();
        myXMLReader.setContentHandler(myRSSHandler);
        InputSource myInputSource = new InputSource(rssUrl.openStream());
        myXMLReader.parse(myInputSource);

        myRssFeed = myRSSHandler.getFeed();

    } catch (MalformedURLException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (ParserConfigurationException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (SAXException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    if (myRssFeed!=null)
    {
        TextView feedTitle = (TextView)findViewById(R.id.feedtitle);
        TextView feedDescribtion = (TextView)findViewById(R.id.feeddescribtion);
        TextView feedPubdate = (TextView)findViewById(R.id.feedpubdate);
        TextView feedLink = (TextView)findViewById(R.id.feedlink);
        feedTitle.setText(myRssFeed.getTitle());
        feedDescribtion.setText(myRssFeed.getDescription());
        feedPubdate.setText(myRssFeed.getPubdate());
        feedLink.setText(myRssFeed.getLink());

        ArrayAdapter<RSSItem> adapter = 
            new ArrayAdapter<RSSItem>(this,
                    android.R.layout.simple_list_item_1,myRssFeed.getList());
        setListAdapter(adapter);
    }
}

rsslist.xml

<TextView 
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/rowtext"
android:layout_width="fill_parent"
android:layout_height="25px"
android:textSize="10sp" />

Main.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:id="@+id/feedtitle"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:textColor="@color/EnlightenBlue"
android:textSize="20sp" />

<TextView
android:id="@+id/feeddescribtion"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal" />

<TextView
android:id="@+id/feedpubdate"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal" />

<TextView  
android:layout_width="fill_parent" 
android:layout_height="wrap_content" 
android:autoLink="web"
android:id="@+id/feedlink" />
<ListView
android:id="@android:id/list"
android:layout_width="fill_parent" 
android:layout_height="wrap_content" />
<TextView
android:id="@android:id/empty"
android:layout_width="fill_parent" 
android:layout_height="wrap_content" 
android:text="No Data" />
</LinearLayout>

I do have internet as a permission in my manifest.

Answer 1

It doesn't look like you are ever running your async task. Also it looks like you are trying to declare your async task inside of the onCreate() method of your Activity. You'll probably need to move to to outside of onCreate() but still inside the Activity itself.