Problem in getting values from an array

Question

var xml:XML;
var urlL:URLLoader =  new URLLoader();
var xmlArray:Array = new Array();
var i:uint;

urlL.dataFormat = URLLoaderDataFormat.TEXT;
urlL.addEventListener(Event.COMPLETE, onLoadedAction);
urlL.load(new URLRequest("list.xml"));
function onLoadedAction(e:Event):void {
    try {
        xml = new XML(e.target.data);
        xml.ignoreWhitespace = true;
        for (i = 0; i<xml.video.length(); i++) {
            xmlArray.push(xml.video.path[i]);
            //trace(xmlArray[i]);
        }
    } catch (e:Error) {
        trace(e.message);
    }
}
trace(xmlArray[0]);

This is my code. When I am tracing the 0 th index value from the array, I am getting "undefined" in the output panel.

What is the bug?

you need to use an IOErrorEvent listener for the loader instead of a try/catch block in the complete handler - if the file can't be loaded the complete handler isn't going to be called. — Chunky Chunk
– Chunky Chunk, Commented Jul 8, 2011 at 5:13
<?xml version="1.0" encoding="iso-8859-1" ?> - <videos> - <video> <path>video1.flv</path> </video> - <video> <path>video2.flv</path> </video> - <video> <path>video3.flv</path> </video> - <video> <path>video4.flv</path> </video> </videos> — Benny
– Benny, Commented Jul 8, 2011 at 5:18
@TheDarkIn1978 : I found the answer. I have assigned the values locally, so that I can't access globally. Matter of "variable scope". Thanks for your contribution. — Benny
– Benny, Commented Jul 8, 2011 at 5:30
my comment wasn't addressing your question, which is why i commented here instead of posting an answer. i'm glad you found a solution to your problem, but if you want to avoid potential problems in the future, you should really add an IOErrorEvent listener to your URLLoader instance instead of relying on a try/catch block in the complete handler. — Chunky Chunk
– Chunky Chunk, Commented Jul 8, 2011 at 5:34
i've posted some code for you to look at so there's no confusion. i hope it helps. — Chunky Chunk
– Chunky Chunk, Commented Jul 8, 2011 at 6:12

Corey · Accepted Answer · 2011-07-08 05:10:19Z

2

From the code provided, it looks as though you're attempting to trace the value before the XML has a chance to completely load (outside of the onLoadedAction function). If you move your trace to the end (inside) of the onLoadedAction function, you should see a result.

answered Jul 8, 2011 at 5:10

Corey

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2 Comments

Benny Over a year ago

s, I could see that. But I have declare the array, outside of the function. So I can access right?

Corey Over a year ago

Yes. You can access variables that are declared outside of your functions. However, you can't access a variable (from outside of the function) that has been declared inside of a function. Check out - variable scope for more info.

Chunky Chunk · Accepted Answer · 2011-07-08 06:26:22Z

1

//Imports
import flash.errors.IOError;
import flash.events.Event;
import flash.events.IOErrorEvent;
import flash.net.URLLoader;
import flash.net.URLRequest;

//Variables
var xml:XML;
var xmlLoader:URLLoader = new URLLoader();
var xmlArray:Array = new Array();

//Load XML
xmlLoader.addEventListener(IOErrorEvent.IO_ERROR, xmlLoaderErrorEventHandler);
xmlLoader.addEventListener(Event.COMPLETE, xmlCompleteEventHandler);
xmlLoader.load(new URLRequest("list.xml"));

//XML Loader Error Event Handler
function xmlLoaderErrorEventHandler(evt:IOErrorEvent):void
{
     throw new IOError(evt.text);
}

//XML Complete Event Handler
function xmlCompleteEventHandler(evt:Event):void
{
     evt.currentTarget.removeEventListener(IOErrorEvent.IO_ERROR, xmlLoaderErrorEventHandler);
     evt.currentTarget.removeEventListener(Event.COMPLETE, xmlCompleteEventHandler);

     xml = new XML(evt.currentTarget.data);

     for each  (var element:XML in xml.video.path)
               xmlArray.push(element);

     trace(xmlArray);
}

edited Jul 8, 2011 at 6:26

answered Jul 8, 2011 at 6:12

Chunky Chunk

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6 Comments

Benny Over a year ago

Gr8... But I don't need package level programming right now... I am looking for play less than 10 videos.

Chunky Chunk Over a year ago

the code above was written to work in the Actions panel in Flash Professional CS5.

Benny Over a year ago

you have imported everything, so that I thought package level programming.for timeline level we don't need to import right?.. simple confusion.

Chunky Chunk Over a year ago

humm... i'm not sure about that since i never write frame scripts. however, when writing code in the Actions panel of Flash Professional CS5, automatic importing does happen, i'm just not sure if it's required or not in which case having it or not having it wouldn't make much of a difference.

Benny Over a year ago

I am using CS3 only. Do u know about eventDispatcher class?

|

NonatomicRetain · Accepted Answer · 2011-07-17 00:13:17Z

0

Try changing this:

xmlArray.push(xml.video.path[i]);

To this:

xmlArray.push(xml.video..path[i]);

answered Jul 17, 2011 at 0:13

NonatomicRetain

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