我正在用RSS阅读器制作一个非常简单的应用程序。读者的作品很棒,但它只是给了我标题,我也想要说明。 我对android非常陌生,而且我尝试了很多东西,但是我无法让它工作。 我发现了很多解析器,但它们让我很难理解,所以我希望找到一个简单的解决方案,因为它只是我想要的标题和描述。 任何人都可以帮助我吗?Java -Android。解析器问题
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.xml.sax.Attributes;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.DefaultHandler;
import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;
public class NyhedActivity extends Activity {
String streamTitle = "";
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.nyheder);
TextView result = (TextView)findViewById(R.id.result);
try {
URL rssUrl = new URL("http://tv2sport.dk/rss/*/*/*/248/*/*");
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);
result.setText(streamTitle);
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
result.setText("Cannot connect RSS!");
} catch (ParserConfigurationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
result.setText("Cannot connect RSS!");
} catch (SAXException e) {
// TODO Auto-generated catch block
e.printStackTrace();
result.setText("Cannot connect RSS!");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
result.setText("Cannot connect RSS!");
}
}
private class RSSHandler extends DefaultHandler
{
final int stateUnknown = 0;
final int stateTitle = 1;
int state = stateUnknown;
int numberOfTitle = 0;
String strTitle = "";
String strElement = "";
@Override
public void startDocument() throws SAXException {
// TODO Auto-generated method stub
strTitle = "Nyheder fra ";
}
@Override
public void endDocument() throws SAXException {
// TODO Auto-generated method stub
strTitle += "";
streamTitle = "" + strTitle;
}
@Override
public void startElement(String uri, String localName, String qName,
Attributes attributes) throws SAXException {
// TODO Auto-generated method stub
if (localName.equalsIgnoreCase("title"))
{
state = stateTitle;
strElement = "";
numberOfTitle++;
}
else
{
state = stateUnknown;
}
}
@Override
public void endElement(String uri, String localName, String qName)
throws SAXException {
// TODO Auto-generated method stub
if (localName.equalsIgnoreCase("title"))
{
strTitle += strElement + "\n"+"\n";
}
state = stateUnknown;
}
@Override
public void characters(char[] ch, int start, int length)
throws SAXException {
// TODO Auto-generated method stub
String strCharacters = new String(ch, start, length);
if (state == stateTitle)
{
strElement += strCharacters;
}
}
}
}
您发布的代码甚至不会*尝试*阅读说明,它只包含标题的代码。 –
我知道这是因为我删除了其他代码,因为它把所有东西搞砸了。 我正在寻找一个解决方案,使其正确:) – Kano