نحوه خواندن داده های اساسی از فایل xml

این نمونه کلاسیه که من در پروژم استفاده کردم

 import java.io.IOException;
import java.io.InputStream;
import java.io.StringReader;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import android.content.Context;
import android.util.Log;


public class XMLParser {

    private Context myContext;


    // constructor
    public XMLParser(Context context) {
        myContext = context;
    }


    public String getXml(String path) {

        String xmlString = null;
        try {
            InputStream is = myContext.getAssets().open(path);
            int length = is.available();
            byte[] data = new byte[length];
            is.read(data);
            xmlString = new String(data);
        }
        catch (IOException e1) {
            e1.printStackTrace();
        }

        return xmlString;
    }


    /**
     * Getting XML DOM element
     * 
     * @param XML string
     * */
    public Document getDomElement(String xml) {
        Document doc = null;
        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        try {

            DocumentBuilder db = dbf.newDocumentBuilder();

            InputSource is = new InputSource();
            is.setCharacterStream(new StringReader(xml));
            doc = db.parse(is);

        }
        catch (ParserConfigurationException e) {
            Log.e("Error: ", e.getMessage());
            return null;
        }
        catch (SAXException e) {
            Log.e("Error: ", e.getMessage());
            return null;
        }
        catch (IOException e) {
            Log.e("Error: ", e.getMessage());
            return null;
        }

        return doc;
    }


    /**
     * Getting node value
     * 
     * @param elem element
     */
    public final String getElementValue(Node elem) {
        Node child;
        if (elem != null) {
            if (elem.hasChildNodes()) {
                for (child = elem.getFirstChild(); child != null; child = child.getNextSibling()) {
                    if (child.getNodeType() == Node.TEXT_NODE) {
                        return child.getNodeValue();
                    }
                }
            }
        }
        return "";
    }


    /**
     * Getting node value
     * 
     * @param Element node
     * @param key string
     * */
    public String getValue(Element item, String str) {
        NodeList n = item.getElementsByTagName(str);
        return this.getElementValue(n.item(0));
    }
}

این هم نمونه ای از نحوه استفاده.

 private static final String     KEY_ITEM  = "City";
    private static final String     KEY_TITLE = "CityName";
    private static final String     KEY_ID    = "CityId";

    private void GetCityList()
    {

        //get city list and add it to ArrayList
        XMLParser parser = new XMLParser(G.context);
        String xml = parser.getXml("xml/city.xml");

        Document doc = parser.getDomElement(xml); // getting DOM element

        NodeList nl = doc.getElementsByTagName(KEY_ITEM);

        cityList = new ArrayList<ViewModelCity>();

        // looping through all item nodes <item>    
        for (int i = 0; i < nl.getLength(); i++) {
            Element e = (Element) nl.item(i);
            ViewModelCity city = new ViewModelCity();

            city.CityId = parser.getValue(e, KEY_ID);
            city.CityName = parser.getValue(e, KEY_TITLE);
            cityList.add(city);

        }

        adapter = new AdapterCityList(cityList);
        lstContent.setAdapter(adapter);
        adapter.notifyDataSetChanged();
    }

موفق باشید.