Parsing xml example

StudentenHuisService.java

package be.howest.nmct.studentenhuizen.data;

import android.util.Xml;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;

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

/**
 * Created by Niels on 7/05/2014.
 * based on 
 * http://developer.android.com/training/basics/network-ops/xml.html
 */
public class StudentenHuisService {
    private static StudentenHuisService instance;
    private static final String DATAURL="http://data.drk.be/kortrijk/studentenhuizen.xml";
    public static StudentenHuisService getInstance(){
        if(instance==null)
        {
            instance=new StudentenHuisService();
        }
        return instance;
    }

    private List<StudentenHuis> studentenHuizen;

    private StudentenHuisService()
    {

    }

    public List<StudentenHuis> getStudentenHuizen(){
        if(studentenHuizen==null)
        {
            try {
                FetchHuizen(DATAURL);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        return studentenHuizen;
    }

    private void FetchHuizen(String url) throws XmlPullParserException, IOException {
        InputStream in = new URL(url).openStream();
        try {
            XmlPullParser parser = Xml.newPullParser();
            parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, false);
            parser.setInput(in, null);
            parser.nextTag();

            studentenHuizen= readXMLHuizen(parser);
        } finally {
            in.close();
        }
    }

    private List<StudentenHuis> readXMLHuizen(XmlPullParser parser) throws IOException, XmlPullParserException {
        List<StudentenHuis> huizen=new ArrayList<StudentenHuis>();
        while(parser.next()!=XmlPullParser.END_TAG)
        {
            if(parser.getEventType()!=XmlPullParser.START_TAG) {
                continue;
            }
            String name = parser.getName();
            if(name.equals("studentenhuizen"))
            {
                huizen.add(readXMLHuis(parser));
            }else{
                skip(parser);
            }

        }
        return huizen;
    }

    private StudentenHuis readXMLHuis(XmlPullParser parser) throws IOException, XmlPullParserException {
        StudentenHuis huis = new StudentenHuis();
        while(parser.next()!=XmlPullParser.END_TAG)
        {
            if (parser.getEventType() != XmlPullParser.START_TAG) {
                continue;
            }
            String name = parser.getName();
            if (name.equals("adres")) {
                huis.setAdres(readText(parser));
            } else if (name.equals("huisnr")) {
                huis.setHuisnr(readText(parser));
            } else if (name.equals("bisnr.")) {
                huis.setBisnr(readText(parser));
            } else if (name.equals("busnr.")) {
                huis.setBusnr(readText(parser));

            } else if (name.equals("gemeente")) {
                huis.setGemeente(readText(parser));


            } else if (name.equals("aantal_kamers")) {
                String text = readText(parser);
                if(text!=null)
                    huis.setAantal_kamers(Integer.parseInt(text));
            } else if (name.equals("kad.afd")) {
                huis.setKad_afd(readText(parser));

            } else if (name.equals("kad.sectie")) {
                huis.setKad_sectie(readText(parser));


            } else if (name.equals("kad.nr.")) {
                huis.setKad_nr(readText(parser));
            }else {
                skip(parser);
            }
        }
        return huis;
    }

    private String readText(XmlPullParser parser) throws IOException, XmlPullParserException {
        String result = "";
        if (parser.next() == XmlPullParser.TEXT) {
            result = parser.getText();
            parser.nextTag();
        }
        return result;
    }

    private void skip(XmlPullParser parser) throws XmlPullParserException, IOException {
        if (parser.getEventType() != XmlPullParser.START_TAG) {
            throw new IllegalStateException();
        }
        int depth = 1;
        while (depth != 0) {
            switch (parser.next()) {
                case XmlPullParser.END_TAG:
                    depth--;
                    break;
                case XmlPullParser.START_TAG:
                    depth++;
                    break;
            }
        }
    }
}