I've been asked so many times for the script to parse the atom feed provided by the picasa api for the album. The script I am posting here is simple and can be used to parse the feed for the album. Please feel free to change to your need.
/*
* PicasaAlbumParser.as
* File to parse Picasa album xml retrieved from http://picasaweb.google.com/data/feed/api/user/{username}
*
* Jatin Desai
* desaijatin@gmail.com
*
* File converts xml to array and each element contains album object.
* This class extracts the information needed for this project but feel free to change. This class was
* initially derived from Mike Chambers' website (parsing atom feeds)
* http://www.mikechambers.com/blog/2004/02/05/atom-feed-actionscript-2-class-alpha/
*
*/
package
{
import flash.xml.XMLDocument;
import flash.xml.XMLNode;
public class PicasaAlbumParser
{
public function PicasaAlbumParser()
{
}
public function ParseAlbumList( xml:XML ):Array
{
trace("*********************************************");
trace("PARSING ATOM FEED");
trace("*********************************************");
var result:XMLDocument = new XMLDocument();
var arAlbum:Array = new Array();
result.parseXML( xml.toXMLString() );
/* get the array of nodes withing response xml */
var nodes:Array = result.firstChild.childNodes;
for each( var node:XMLNode in nodes ) {
switch( node.nodeName )
{
/* we are only interested in entry node */
case "entry":
arAlbum.push( ParseAlbumEntries(node) );
break;
}
}
/* Return album */
return arAlbum;
}
/* Parse album entries node */
private function ParseAlbumEntries(entry:XMLNode):Object
{
var album:Object = new Object();
var nodes:Array = entry.childNodes;
for each( var node:XMLNode in nodes )
{
switch( node.nodeName )
{
case "id":
album.id = node.firstChild.nodeValue;
break;
case "title":
album.title = node.firstChild.nodeValue;
break;
case "gphoto:id":
album.albumid = node.firstChild.nodeValue;
break;
case "gphoto:name":
album.albumname = node.firstChild.nodeValue;
break;
case "gphoto:numphotos":
album.numphotos = node.firstChild.nodeValue;
break;
case "media:group":
album.media = ParseAlbumMediaGroup(node);
break;
}
}
/* return the album object */
return album;
}
private function ParseAlbumMediaGroup(entry:XMLNode):Object
{
var media:Object = new Object();
var nodes:Array = entry.childNodes;
for each( var node:XMLNode in nodes )
{
switch( node.nodeName )
{
case "media:description":
media.description = "";
if(node.firstChild != null)
media.description = node.firstChild.nodeValue;
break;
case "media:thumbnail":
media.thumbnail = node.attributes.url;
break;
case "media:content":
media.bigimage = node.attributes.url;
break;
}
}
/* Return media object */
return media;
}
}
}
Thanks,
Jatin
