Newb is confused

[chuckgrenade]

Yes. I'm confused. I can't figure out some of the actioscripting examples that are supposed top just be put into FLEX wrapped in the CDATA tag, right?

For example: I read a post that tells how to load xml with actionscript in FLEX but I get an error that the class cannot be nested.


package {
import flash.display.Sprite;
import flash.net.*;
import flash.events.*;

public class URLLoaderExample extends Sprite
{
public function URLLoaderExample()
{
var externalXML:XML;
var loader:URLLoader = new URLLoader();
var request:URLRequest = new URLRequest("xmlFile.xml");
loader.load(request);
loader.addEventListener(Event.COMPLETE, onComplete);

function onComplete(event:Event):void {
var loader:URLLoader = URLLoader(event.target);
externalXML = new XML(loader.data);
trace(externalXML.toXMLString());
}

}
}
}



You put all that ine <mx:Script>, CDATA tags, right?!
What am I missing?

[springframework]

add this line of code to your URLLoader

loader.dataFormat = URLLoaderDataFormat.TEXT;

and then access it inside the onComplete function with.

xml = new XML(event.target.data);

[chuckgrenade]

I'm getting an error "Classes must not be nested" and it is pointing to the line of code:
public class URLLoaderExample extends Sprite

The XML actually loads fine without the additions to the code. My problem is that the app will not compile with this "classes" error. No change I have made will show up since I have had errors. :(




package {
import flash.display.Sprite;
import flash.net.*;
import flash.events.*;

public class URLLoaderExample extends Sprite
{
public function URLLoaderExample()
{
var externalXML:XML;
var loader:URLLoader = new URLLoader();
var request:URLRequest = new URLRequest("xmlFile.xml");
loader.load(request);
loader.addEventListener(Event.COMPLETE, onComplete);

function onComplete(event:Event):void {
var loader:URLLoader = URLLoader(event.target);
externalXML = new XML(loader.data);
trace(externalXML.toXMLString());
}

}
}
}

[springframework]

try not nesting your classes.

[springframework]

you are also using the default package. it might not like that.

[chuckgrenade]

... doesn't look nested to me.

Of course, I am not familiar with classes and packages and how they work. Care to explain, please? - or point me in the right direction?

[chuckgrenade]

This is my code - the other code was an example given by adobe.
I get an error about the line:
public class URLLoaderExample extends Sprite
the error says:
Classes must not be nested




<mx:Script>

<![CDATA[
import flash.display.Sprite;
import flash.net.*;
import flash.events.*;
import mx.states.*;


public class URLLoaderExample extends Sprite
{
public function URLLoaderExample()
{
var externalXML:XML;
var loader:URLLoader = new URLLoader();
var request:URLRequest = new URLRequest("http://www.trapp.com/clients_XML.xml");
loader.load(request);
loader.addEventListener(Event.COMPLETE, onComplete);
loader.dataFormat = URLLoaderDataFormat.TEXT;

function onComplete(event:Event):void
{
var loader:URLLoader = URLLoader(event.target);
externalXML = new XML(loader.data);
xml = new XML(event.target.data);
trace(externalXML);
}

}
}
]]>
</mx:Script>

[springframework]

Declaring a function inside a function means you are nesting that function.

this is not nested



public function URLLoaderExample()
{
var externalXML:XML;
var loader:URLLoader = new URLLoader();
var request:URLRequest = new URLRequest("http://www.trapp.com/clients_XML.xml");
loader.load(request);
loader.addEventListener(Event.COMPLETE, onComplete);
loader.dataFormat = URLLoaderDataFormat.TEXT;
}

function onComplete(event:Event):void
{
externalXML = new XML(event.target.data);
trace(externalXML);
}

[springframework]

I use flash 9 alpha so i dont fully understand flex 2, but i wouldn't think you should be declaring a class definition inside <mx:Script> CDATA tags.

I think <mx:Script> CDATA tags are for declaring functions and running actionscript.


you should create the class inside its own .as file.

then import that .as file

then you can create that an object of that class and call its meathods inside the <mx:Script> CDATA tags

[Tink]

The problem heres is that you have an MXML class (i can see that as you are using a Script tag). Your MXML will specify what is the superclass, yet inside the code (what should just be logic), you are defining abnother class, and another subclass.

To use that AS it needs to be an AS only class.

[dr_zeus]

To use that AS it needs to be an AS only class.

In other words, you need to put your class URLLoaderExample class in a file called URLLoaderExample.as.

If you want to put ActionScript inside a <mx:Script> block, you should only use functions, no classes because your MXML file is a class. That's why you're getting the error about nested classes.