Flex Flash and stageScaleMode

[Jorge Solis]

Following Flash 9 docs it's realtive easy to know that you need to access the stage property of a DisplayObject to manage the stageScaleMode


//Timeline code
var child:Sprite = new Sprite();
child.name = "stageMode"
child.addEventListener(Event.ADDED_TO_STAGE, stageListener); 

this.addChild(child);
function stageListener(evt:Event):void{
  var t:Sprite = Sprite(this.getChildByName("stageMode"))
   t.stage.scaleMode=StageScaleMode.SHOW_ALL;
}


But in Flex it becomes a little tricky because you can't add a Sprite to Stage, only objects that extends UIComponent, so you should do the same, but using some dummy component, say a Canvas


//init function called from application creationComplete event
function init():void{
   var child:Sprite = new Canvas();
   child.name = "stageMode"
   child.addEventListener(Event.ADDED_TO_STAGE, stageListener); 

   addChild(child);
}
private function stageListener(evt:Event):void{
   var child = getChildByName("stageController")
   child.stage.scaleMode=StageScaleMode.SHOW_ALL;
}


Tryng to set inmediatly the scaleMode after the element is added to the displayList will trigger an error similar to this:

TypeError: Error #1009: Cannot access a property or method of a null object reference.

Jorge

[savneet]

Hi,

I have tried your code only i have change is instead of stageController i have given stageMode and there was no error in Flex.

Thanks.