OMFG the namespace was the problem. After I added that line I was able to call Alert.show(myXML.logo.toXMLString()); and it worked like a charm. Thanks now I can finally start doing stuff with my application. This snag has been holding me up for a few days. One last thing, how would I go about extracting just what is between the tags <logo> and </logo> instead of the entire element and attributes? Would I have to convert it to a single XML object first like you said? Or is there some function that can do that? Thanks for all your help Tracy, I'm starting to understand how XML works now because of you.
-Leighton --- In flexcoders@yahoogroups.com, "Tracy Spratt" <[EMAIL PROTECTED]> wrote: > > Ok, you may have a namespace problem. They can be a PITA. I'm not an > expert and you should reveiw the docs/google if this doesn't work but > try putting this in the declarations section of your > app/component(instance scope level): > > default xml namespace = ""http://www.w3.org/2005/Atom";; > > > > There is more stuff in the xmlns declaration in your sample xml: > > <feed xmlns="http://www.w3.org/2005/Atom <http://www.w3.org/2005/Atom> " > ... > > > > I do not understand what that second part of the string is. You might > have to include that as well in the default namespace declaration. > > > > You can avoid the namespace issue if you use the node index to get a > node, but this is a very clunky way to do it. To see, try: > > Alert.show(myXML.children()[4].toXMLString()) > > > > XMLList always has 0-n xml nodes in it. (the result of an e4x expression > is never null) If there is only one node, then many of the XML methods > will work on it the same as with XML. But for clarity, if I know I want > to work with a single XML node then I do: > > var myXMLList:XMLList = myXML.logo; > > var xmlLogo:XML = myXMLList[0]; > > > > If just you do this below, you will get a datatype error: > > var xmlLogo:XML = myXML.logo; //even if that expression returns only a > single node. > > > > Tracy > > ________________________________ > > From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On > Behalf Of wild.katana > Sent: Thursday, May 22, 2008 7:08 PM > To: flexcoders@yahoogroups.com > Subject: [flexcoders] Re: How to extract data from XML > > > > Okay, first of all, thanks for all of your help, Tracy. > I have checked the myXML variable with Alert.show(myXML) and it shows > what I pasted in the first post (that's where I got it). So I know > that myXML contains that. I tried doing > Alert.show(myXML.logo.toXMLString()) but it is still showing nothing. > I have read the documentation on using XML and tried many of the > things it says, but to no avail. One thing I don't wuite understand... > What is the difference between XML and XMLList? If the myXML.logo > returns an XMLList, then should I make a variable that contains it > first? Like > var myXMLList:XMLList = myXML.logo; > Alert.show(myXMLList); > ? > I will try that but let me know if that is what you were meaning or > not... Thanks again.. > > --- In flexcoders@yahoogroups.com <mailto:flexcoders%40yahoogroups.com> > , "Tracy Spratt" <tspratt@> wrote: > > > > First, did you trace or alert your XML in yur result handler? If you > > did not and are assuming you know what your xml looks like exactly, do > > that now. > > > > > > > > Second, when attempting to view XML, always use toXMLString() (search > > the archives for why): > > > > Alert.show(myXML.logo.toXMLString()) > > > > > > > > Third, when writing e4x expressions, unless you are very certain of > > yourself, it is best to do it one step at a time, using temporary XML > > or XMLList variables as needed, and tracing the contained value using > > toXMLString(). Note that all e4x expressions(myXML.logo is one) return > > XMLList, not XML. The docs will show how to handle this. > > > > > > > > Fourth, review the XML class in the language Ref and the "working with > > data" cha[ter in the developers guide for an explanation on how to > work > > with XML. The link below is for Flex 2, but the XML stuff has not > > changed. > > > > http://livedocs.adobe.com/flex/2/docs/00001910.html > <http://livedocs.adobe.com/flex/2/docs/00001910.html> > > > > > > > > Tracy > > > > > > > > ________________________________ > > > > From: flexcoders@yahoogroups.com <mailto:flexcoders%40yahoogroups.com> > [mailto:flexcoders@yahoogroups.com <mailto:flexcoders%40yahoogroups.com> > ] On > > Behalf Of wild.katana > > Sent: Thursday, May 22, 2008 4:00 AM > > To: flexcoders@yahoogroups.com <mailto:flexcoders%40yahoogroups.com> > > Subject: [flexcoders] How to extract data from XML > > > > > > > > Hello, I have loaded an XML from a URL using URLLoader. Now that I > > have it in an object, how do I access individual parts of that data? > > The XML looks like this: > > <feed xmlns="http://www.w3.org/2005/Atom <http://www.w3.org/2005/Atom> > <http://www.w3.org/2005/Atom <http://www.w3.org/2005/Atom> > " > > xmlns:openSearch="http://a9.com/-/spec/opensearchrss/1.0/ > <http://a9.com/-/spec/opensearchrss/1.0/> > > <http://a9.com/-/spec/opensearchrss/1.0/ > <http://a9.com/-/spec/opensearchrss/1.0/> > " > > xmlns:gml="http://www.opengis.net/gml <http://www.opengis.net/gml> > <http://www.opengis.net/gml <http://www.opengis.net/gml> > " > > xmlns:georss="http://www.georss.org/georss > <http://www.georss.org/georss> > > <http://www.georss.org/georss <http://www.georss.org/georss> > " > > xmlns:media="http://search.yahoo.com/mrss/ > <http://search.yahoo.com/mrss/> > > <http://search.yahoo.com/mrss/ <http://search.yahoo.com/mrss/> > " > > xmlns:yt="http://gdata.youtube.com/schemas/2007 > <http://gdata.youtube.com/schemas/2007> > > <http://gdata.youtube.com/schemas/2007 > <http://gdata.youtube.com/schemas/2007> > " > > xmlns:gd="http://schemas.google.com/g/2005 > <http://schemas.google.com/g/2005> > > <http://schemas.google.com/g/2005 <http://schemas.google.com/g/2005> > > "> > > <id>http://gdata.youtube.com/feeds/api/videos > <http://gdata.youtube.com/feeds/api/videos> > > <http://gdata.youtube.com/feeds/api/videos > <http://gdata.youtube.com/feeds/api/videos> > </id> > > <updated>2008-05-22T07:54:46.868Z</updated> > > <category scheme="http://schemas.google.com/g/2005#kind > <http://schemas.google.com/g/2005#kind> > > <http://schemas.google.com/g/2005#kind > <http://schemas.google.com/g/2005#kind> > " > > term="http://gdata.youtube.com/schemas/2007#video > <http://gdata.youtube.com/schemas/2007#video> > > <http://gdata.youtube.com/schemas/2007#video > <http://gdata.youtube.com/schemas/2007#video> > "/> > > <title type="text">YouTube Videos matching query: football > > -soccer</title> > > <logo>http://www.youtube.com/img/pic_youtubelogo_123x63.gif > <http://www.youtube.com/img/pic_youtubelogo_123x63.gif> > > <http://www.youtube.com/img/pic_youtubelogo_123x63.gif > <http://www.youtube.com/img/pic_youtubelogo_123x63.gif> > </logo> > > <link rel="alternate" type="text/html" href="http://www.youtube.com > <http://www.youtube.com> > > <http://www.youtube.com <http://www.youtube.com> > "/> > > <link rel="http://schemas.google.com/g/2005#feed > <http://schemas.google.com/g/2005#feed> > > <http://schemas.google.com/g/2005#feed > <http://schemas.google.com/g/2005#feed> > " > > type="application/atom+xml" > > href="http://gdata.youtube.com/feeds/api/videos > <http://gdata.youtube.com/feeds/api/videos> > > <http://gdata.youtube.com/feeds/api/videos > <http://gdata.youtube.com/feeds/api/videos> > "/> > > <link rel="self" type="application/atom+xml" > > > href="http://gdata.youtube.com/feeds/api/videos?start-index=11&max-r > <http://gdata.youtube.com/feeds/api/videos?start-index=11&max-r> > > esults=10&orderby=published&vq=football+-soccer > > > <http://gdata.youtube.com/feeds/api/videos?start-index=11&max-result > <http://gdata.youtube.com/feeds/api/videos?start-index=11&max-result > > > > s=10&orderby=published&vq=football+-soccer> "/> > > <link rel="previous" type="application/atom+xml" > > > href="http://gdata.youtube.com/feeds/api/videos?start-index=1&max-re > <http://gdata.youtube.com/feeds/api/videos?start-index=1&max-re> > > sults=10&orderby=published&vq=football+-soccer > > > <http://gdata.youtube.com/feeds/api/videos?start-index=1&max-results > <http://gdata.youtube.com/feeds/api/videos?start-index=1&max-results > > > > =10&orderby=published&vq=football+-soccer> "/> > > <link rel="next" type="application/atom+xml" > > > href="http://gdata.youtube.com/feeds/api/videos?start-index=21&max-r > <http://gdata.youtube.com/feeds/api/videos?start-index=21&max-r> > > esults=10&orderby=published&vq=football+-soccer > > > <http://gdata.youtube.com/feeds/api/videos?start-index=21&max-result > <http://gdata.youtube.com/feeds/api/videos?start-index=21&max-result > > > > s=10&orderby=published&vq=football+-soccer> "/> > > <author> > > <name>YouTube</name> > > <uri>http://www.youtube.com/ <http://www.youtube.com/> > <http://www.youtube.com/ <http://www.youtube.com/> > </uri> > > </author> > > ... > > > > So let's say I wanted to access the information in the logo element, > > how would I do this? My code looks like this: > > > > public var myLoader:URLLoader; //declare this outside of a function. > > The leading underscore is just a convention > > public var myXML:XML; //this too > > > > private function initUrlLoader():void { > > > > var XML_URL:String > > > ="http://gdata.youtube.com/feeds/api/videos?vq=football+-soccer&orderby= > <http://gdata.youtube.com/feeds/api/videos?vq=football+-soccer&orderby=> > > > published&start-index=11&max-results=10 > > > <http://gdata.youtube.com/feeds/api/videos?vq=football+-soccer&orderby=p > <http://gdata.youtube.com/feeds/api/videos?vq=football+-soccer&orderby=p > > > > ublished&start-index=11&max-results=10> "; > > var myXMLURL:URLRequest = new URLRequest(XML_URL); > > myLoader = new URLLoader(myXMLURL); > > myLoader.addEventListener("complete", xmlLoaded); > > } > > > > private function xmlLoaded(event:Event):void > > { > > myXML = XML(myLoader.data); > > trace("Data loaded."); > > // I want to pop up the information in the logo element > > Alert.show(myXML.logo); > > } > > > > The alert box isn't showing anything though... What am I doing wrong? > > Thanks > > >
