Adobe Flex Variables

HankS · August 29th, 2007, 03:08 PM

I hope I'm in the right section for posting this. I am trying to learn Adobe Flex and I am having trouble with variables. I resorted to using the example Hello World program on Adobe's page and had it working fine. The instant I try to add a variable, I get an error, even if I copy a variable declaration straight from the help file, can someone please help me by showing me how to declare a variable (such as hiWorld = "Hello World") and then display it where it currently has the string "Hello World"?

Code:

<?xml version="1.0" encoding="utf-8"?>

<mx:Application 
    xmlns:mx="http://www.adobe.com/2006/mxml" 
    viewSourceURL="src/HelloWorld/index.html"
    horizontalAlign="center" verticalAlign="middle" 
    width="300" height="160"
>
    <mx:Panel 
        paddingTop="10" paddingBottom="10" paddingLeft="10" paddingRight="10"
        title="My Application"  
    >

        <mx:Label text="Hello World!" fontWeight="bold" fontSize="24"/>
    </mx:Panel>
</mx:Application>

chroniclemaster1 · August 29th, 2007, 03:38 PM

I'm not familiar with Flex, but have heard it's a little bit friendlier way of interfacing with Flash elements. Is it using Actionscript? In Actionscript 2 & 3 you declare variables in the following form...

var name:String = "Me";
var age:Number = 1;
var isMe:Boolean = true;

-------------------------

Whatever you can do or dream you can, begin it. Boldness has genius, power and magic in it. Begin it now.
-Johann von Goethe

When Two Hearts Race... Both Win.
-Dove Chocolate Wrapper

Chroniclemaster1, Founder of www.EarthChronicle.com
A Growing History of our Planet, by our Planet, for our Planet.

HankS · August 29th, 2007, 03:58 PM

Yes, I believe it's ActionScript

I've tried the following (among many other things) with no luck.

Code:

<?xml version="1.0" encoding="utf-8"?>

<mx:Application 
    xmlns:mx="http://www.adobe.com/2006/mxml" 
    viewSourceURL="src/HelloWorld/index.html"
    horizontalAlign="center" verticalAlign="middle" 
    width="300" height="160"
>
    <mx:Panel 
        paddingTop="10" paddingBottom="10" paddingLeft="10" paddingRight="10"
        title="My Application"  
    >
var hiWorld:String = "Hello World!";

        <mx:Label text="{hiWorld}" fontWeight="bold" fontSize="24"/>
    </mx:Panel>
</mx:Application>

chroniclemaster1 · August 30th, 2007, 11:48 AM

:( Lame, then this is probably an interface issue. It does look like you're declaring them properly. The closest thing I can think of is a situation like learning Dreamweaver. Dreamweaver is simply constructing HTML documents for you in a more visually intuitive manner. However, because your problems in Dreamweaver are typically about which button to push or which panel to pull up, an HTML guru is typically not very helpful. This may be something similar, where we won't be much help. I hope there's someone lurking who knows some basic Flex. I don't think this should be hard.

I feel confident saying that your variable declaration looks great. That's not your problem. It does look a little out of place in your XML. I've NO idea how this works in Flex, one of the nasty things about XML languages is that you can customize them any way you want. From my work in HTML, though you can't embed scripting code "naked" like this. In HTML if you wanted to include script you'd need script tags, literally

Code:

<REALLY LONG HTML DOCTYPE>
   .
   .
   .
XML looking stuff
   .
   .
   .
<script>
All the script goes in here
</script>
   .
   .
   .
XML stuff to the end

I don't know if this will help. It may be totally wrong for Flex, but that's an XML based guess.

-------------------------

Whatever you can do or dream you can, begin it. Boldness has genius, power and magic in it. Begin it now.
-Johann von Goethe

When Two Hearts Race... Both Win.
-Dove Chocolate Wrapper

Chroniclemaster1, Founder of www.EarthChronicle.com
A Growing History of our Planet, by our Planet, for our Planet.

HankS · August 30th, 2007, 03:39 PM

Thanks, chroniclemaster1, you were right.

All I needed to do was

<mx:Script>
var hiWorld:String = "Hello World!";
</mx:Script>

Works great.

chroniclemaster1 · August 30th, 2007, 06:00 PM

Hey! Bravado and dumb luck triumph again!

I'm really glad that I could help you tech out the problem. Nice work!

-------------------------

Whatever you can do or dream you can, begin it. Boldness has genius, power and magic in it. Begin it now.
-Johann von Goethe

When Two Hearts Race... Both Win.
-Dove Chocolate Wrapper

Chroniclemaster1, Founder of www.EarthChronicle.com
A Growing History of our Planet, by our Planet, for our Planet.