RssParserPull.java

package net.sgoliver.android.xml;

import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;

import org.xmlpull.v1.XmlPullParser;

import android.util.Xml;

public class RssParserPull
{
	private URL rssUrl;
	
    public RssParserPull(String url) 
    {
		try 
		{
            this.rssUrl = new URL(url);
        } 
		catch (MalformedURLException e) 
		{
            throw new RuntimeException(e);
        }
    }
    
    public List<Noticia> parse() 
    {
        List<Noticia> noticias = null;
        XmlPullParser parser = Xml.newPullParser();
        
        try 
        {
            parser.setInput(this.getInputStream(), null);
            
            int evento = parser.getEventType();
            
            Noticia noticiaActual = null;
            
            while (evento != XmlPullParser.END_DOCUMENT)
            {
                String etiqueta = null;
                
                switch (evento)
                {
                    case XmlPullParser.START_DOCUMENT:
                    	
                    	noticias = new ArrayList<Noticia>();
                        break;
                        
                    case XmlPullParser.START_TAG:
                    	
                    	etiqueta = parser.getName();
                        
                        if (etiqueta.equals("item"))
                        {
                        	noticiaActual = new Noticia();
                        } 
                        else if (noticiaActual != null)
                        {
                            if (etiqueta.equals("link"))
                            {
                            	noticiaActual.setLink(parser.nextText());
                            } 
                            else if (etiqueta.equals("description"))
                            {
                            	noticiaActual.setDescripcion(parser.nextText());
                            } 
                            else if (etiqueta.equals("pubDate"))
                            {
                            	noticiaActual.setFecha(parser.nextText());
                            } 
                            else if (etiqueta.equals("title"))
                            {
                            	noticiaActual.setTitulo(parser.nextText());
                            } 
                            else if (etiqueta.equals("guid"))
                            {
                            	noticiaActual.setGuid(parser.nextText());
                            }
                        }
                        break;
                        
                    case XmlPullParser.END_TAG:
                    	
                    	etiqueta = parser.getName();
                    	
                        if (etiqueta.equals("item") && noticiaActual != null)
                        {
                        	noticias.add(noticiaActual);
                        } 
                        break;
                }
                
                evento = parser.next();
            }
        } 
        catch (Exception ex) 
        {
            throw new RuntimeException(ex);
        }
        
        return noticias;
    }
    
	private InputStream getInputStream() 
	{
        try 
        {
            return rssUrl.openConnection().getInputStream();
        } 
        catch (IOException e) 
        {
            throw new RuntimeException(e);
        }
    }
}