Hi All,
I am working on rss parsing i am unable to display the rss feeds and i am
unable to find the problem.
here is my code
public class RSSReader extends Activity implements OnItemClickListener {
public final String RSSFEEDOFCHOICE = "
http://www.ibm.com/developerworks/views/rss/customrssatom.jsp?zone_by=XML&zone_by=Java&zone_by=Rational&zone_by=Linux&zone_by=Open+source&zone_by=WebSphere&type_by=Tutorials&search_by=&day=1&month=06&year=2007&max_entries=20&feed_by=rss&isGUI=true&Submit.x=48&Submit.y=14
";
private static final int SELECT = 0;
private static final int REFRESH = 1;
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
return null;
}
}
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
menu.add(0, RSSReader.SELECT, 0, "Choose RSS Feed").setIcon(
android.R.drawable.ic_menu_mapmode);
// menu.add(0,0,"Choose RSS Feed");
// menu.add(0,1,"Refresh");
menu.add(0, RSSReader.REFRESH, 0, "Refresh").setIcon(
android.R.drawable.ic_menu_mapmode);
Log.i(tag, "onCreateOptionsMenu");
return true;
}
@Override
public boolean onMenuItemSelected(final int featureId, final MenuItem
item) {
switch (item.getItemId()) {
case RSSReader.SELECT:
Log.i(tag, "Set RSS Feed");
return true;
case RSSReader.REFRESH:
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;
}
feedtitle.setText(feed.getTitle());
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);
}
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);
// startSubActivity(itemintent,0);
startActivity(itemintent);
}
}
public class RSSReader extends Activity implements OnItemClickListener {
public final String RSSFEEDOFCHOICE = "
http://www.ibm.com/developerworks/views/rss/customrssatom.jsp?zone_by=XML&zone_by=Java&zone_by=Rational&zone_by=Linux&zone_by=Open+source&zone_by=WebSphere&type_by=Tutorials&search_by=&day=1&month=06&year=2007&max_entries=20&feed_by=rss&isGUI=true&Submit.x=48&Submit.y=14
";
private static final int SELECT = 0;
private static final int REFRESH = 1;
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
return null;
}
}
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
menu.add(0, RSSReader.SELECT, 0, "Choose RSS Feed").setIcon(
android.R.drawable.ic_menu_mapmode);
// menu.add(0,0,"Choose RSS Feed");
// menu.add(0,1,"Refresh");
menu.add(0, RSSReader.REFRESH, 0, "Refresh").setIcon(
android.R.drawable.ic_menu_mapmode);
Log.i(tag, "onCreateOptionsMenu");
return true;
}
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;
}
feedtitle.setText(feed.getTitle());
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);
}
}
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