XML Parsing Example

XMLParsingExample.java


package com.androidpeople.xml.parsing;

import java.net.URL;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.xml.sax.InputSource;
import org.xml.sax.XMLReader;
import android.app.Activity;
import android.os.Bundle;
import android.widget.LinearLayout;
import android.widget.TextView;

public class XMLParsingExample extends Activity {

/** Create Object For SiteList Class */
SitesList sitesList = null;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

/** Create a new layout to display the view */
LinearLayout layout = new LinearLayout(this);
layout.setOrientation(1);

/** Create a new textview array to display the results */
TextView name[];
TextView website[];
TextView category[];

try {

/** Handling XML */
SAXParserFactory spf = SAXParserFactory.newInstance();
SAXParser sp = spf.newSAXParser();
XMLReader xr = sp.getXMLReader();

/** Send URL to parse XML Tags */
URL sourceUrl = new URL(
"http://www.androidpeople.com/wp-content/uploads/2010/06/example.xml");

/** Create handler to handle XML Tags ( extends DefaultHandler ) */
MyXMLHandler myXMLHandler = new MyXMLHandler();
xr.setContentHandler(myXMLHandler);
xr.parse(new InputSource(sourceUrl.openStream()));

} catch (Exception e) {
System.out.println("XML Pasing Excpetion = " + e);
}

/** Get result from MyXMLHandler SitlesList Object */
sitesList = MyXMLHandler.sitesList;

/** Assign textview array lenght by arraylist size */
name = new TextView[sitesList.getName().size()];
website = new TextView[sitesList.getName().size()];
category = new TextView[sitesList.getName().size()];

/** Set the result text in textview and add it to layout */
for (int i = 0; i < sitesList.getName().size(); i++) { name[i] = new TextView(this); name[i].setText("Name = "+sitesList.getName().get(i)); website[i] = new TextView(this); website[i].setText("Website = "+sitesList.getWebsite().get(i)); category[i] = new TextView(this); category[i].setText("Website Category = "+sitesList.getCategory().get(i)); layout.addView(name[i]); layout.addView(website[i]); layout.addView(category[i]); } /** Set the layout view to display */ setContentView(layout); } } MyXMLHandler.java package com.androidpeople.xml.parsing; import org.xml.sax.Attributes; import org.xml.sax.SAXException; import org.xml.sax.helpers.DefaultHandler; public class MyXMLHandler extends DefaultHandler { Boolean currentElement = false; String currentValue = null; public static SitesList sitesList = null; public static SitesList getSitesList() { return sitesList; } public static void setSitesList(SitesList sitesList) { MyXMLHandler.sitesList = sitesList; } /** Called when tag starts ( ex:- AndroidPeople
* -- )*/
@Override
public void startElement(String uri, String localName, String qName,
Attributes attributes) throws SAXException {

currentElement = true;

if (localName.equals("maintag"))
{
/** Start */
sitesList = new SitesList();
} else if (localName.equals("website")) {
/** Get attribute value */
String attr = attributes.getValue("category");
sitesList.setCategory(attr);
}

}

/** Called when tag closing ( ex:- AndroidPeople
* -- )*/
@Override
public void endElement(String uri, String localName, String qName)
throws SAXException {

currentElement = false;

/** set value */
if (localName.equalsIgnoreCase("name"))
sitesList.setName(currentValue);
else if (localName.equalsIgnoreCase("website"))
sitesList.setWebsite(currentValue);

}

/** Called to get tag characters ( ex:- AndroidPeople
* -- to get AndroidPeople Character ) */
@Override
public void characters(char[] ch, int start, int length)
throws SAXException {

if (currentElement) {
currentValue = new String(ch, start, length);
currentElement = false;
}

}

}



SitesList.java

package com.androidpeople.xml.parsing;

import java.util.ArrayList;

/** Contains getter and setter method for varialbles */
public class SitesList {

/** Variables */
private ArrayList name = new ArrayList();
private ArrayList website = new ArrayList();
private ArrayList category = new ArrayList();


/** In Setter method default it will return arraylist
* change that to add */

public ArrayList getName() {
return name;
}

public void setName(String name) {
this.name.add(name);
}

public ArrayList getWebsite() {
return website;
}

public void setWebsite(String website) {
this.website.add(website);
}

public ArrayList getCategory() {
return category;
}

public void setCategory(String category) {
this.category.add(category);
}

}