XMl Parsing With SAX Parser

example.xml

[sourcecode language="xml"]

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[/sourcecode]

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);

}

}

[/sourcecode]

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;

}

}

}

[/sourcecode]

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);

}

}

[/sourcecode]