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Text Layout Framework

air_flashCommunity Member

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TFL flashvars bug

May 21, 2010 2:53 PM

Hi everyone!
During the project migration to Flash CS5 I discovered an unexpected problem. If the scene contains at least one component of the TFL, then the all flashvars variables are "undefined". Delete a component from the scene, compile - all works fine. Adds - again undefined.
FlashPlayer 10,0,45,2

Sorry from my English

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happyBtn,

Community Member

May 28, 2010 11:29 AM

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Found the same issue.

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Alan Stearns,

Adobe Employee

May 28, 2010 1:34 PM

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I can reproduce the issue. I've started the wheels turning to figure out what's going on.

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Alan Stearns,

Adobe Employee

Jun 1, 2010 2:22 PM

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OK - it looks like this is an issue with the Flash Pro CS5 preloader code. I'm told there will be a technote published for this problem.

Here's a workaround I got from the engineer who looked into this:

Typically you could access the flashvars parameters in AS3 by doing something like this:

var params:Object = loaderInfo.parameters;

But to work around the issue we are having with the TLF RSL preloading, you need a little bit of extra code:

var params:Object = loaderInfo.parameters;
if (parent != null && parent.parent != null) {
params = parent.parent.loaderInfo.parameters;
}

For the work around to work correctly THIS CODE NEEDS TO BE ON FRAME ONE. It cannot be in a user defined constructor (too early) and it cannot be in frame two (too late). We need to be clear about that.

While there is not a schedule for releasing a fix to this issue, we definitely would want users to first grab the flashvars the normal way and then check parent != null && parent.parent != null, because I hope that in the future we will be able to fix this issue, and we do not want users creating content that would be incorrectly applying a work around when one is no longer necessary. So definitely those checks are important.

Alan

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AdrianParr,

Community Member

Sep 5, 2010 10:38 AM

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Just for the record, if you are having a problem accessing your FlashVars (and you are using a TLFTextField in Flash CS5) and you are using external classes (i.e. you have a document class and not timeline code) you need to listen for the ADDED_TO_STAGE event before trying to access them.

For example ...

package
{
    import flash.display.Sprite;
    import flash.events.Event;
    import flash.display.LoaderInfo;

    public class Main extends Sprite
    {

        public function Main():void
        {
            if (stage) init();
            else addEventListener(Event.ADDED_TO_STAGE, init);
        }

        private function init(evt:Event = null):void
        {
            removeEventListener(Event.ADDED_TO_STAGE, init);
            var params:Object = loaderInfo.parameters;
            if (parent != null && parent.parent != null) {
                params = parent.parent.loaderInfo.parameters;
            }
            // You can now loop through the params to access your FlashVars
        }

    }
}

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jdrago999,

Community Member

Nov 7, 2010 11:03 PM

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Going up 2 levels was too far for my case.

This worked for me:

/**
* CS5 completely broke flashVars.
* See http://forums.adobe.com/thread/644057 for details.
* Basically, ADOBE == STUPID.  Thanks guys!
*/
private function getFlashVar( varName:String ) :String {
  var paramObj:Object = LoaderInfo(this.root.loaderInfo).parameters;
  if( parent != null )
  {
    paramObj = parent.loaderInfo.parameters;
  }// end if()

  try {
    for( var el:String in paramObj )
      if( el == varName )
        return paramObj[el].toString();
  }
  catch(e) {
    return "";
  };
  return "";
}

Just another example of the folks at Adobe screwing up a good thing.

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Text Layout Framework

TFL flashvars bug

May 21, 2010 2:53 PM

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