I have a swf which load an external swf. The loader swf has a variable which i want to access from the loaded swf. I use MovieClip(parent.parent).myVar
but it return this error
TypeError: Error #1009: Cannot access a property or method of a null object reference. at card01_fla::MainTimeline/frame1()
The loader swf has a custom Document Class which i think is the problem.
Thanks in advance.
EDIT
This is the as of the main swf
package
{
import flash.display.Loader;
import flash.display.Sprite;
import flash.events.Event;
import flash.events.MouseEvent;
import flash.net.URLRequest;
import flash.text.TextField;
/**
* ...
* @author chchrist
*/
public class CardSender extends Sprite
{
private var loader:Loader;
private var viewButtonArray:Array;
private var sendButtonArray:Array;
private var cardContainer:Sprite;
public var testVar:String
public function CardSender() {
testVar = "it worked!!!";
init();
}
private function init() {
viewButtonArray = [cardsenderMC.view01, cardsenderMC.view02, cardsenderMC.view03, cardsenderMC.view04];
for each( var viewButton in viewButtonArray) {
viewButton.buttonMode = true;
viewButton.addEventListener(MouseEvent.CLICK, onViewClick);
}
}
private function onViewClick(e:MouseEvent):void {
var cardName = "card"+e.target.name.substring(4)+".swf";
loader = new Loader();
loader.load( new URLRequest(cardName));
loader.contentLoaderInfo.addEventListener(Event.INIT, onCardInit);
}
private function onCardInit(e:Event):void {
addChild(loader);
var content:* = loader.content;
content.closeButton.addEventListener(MouseEvent.CLICK, onCloseClick);
}
private function onCloseClick(e:MouseEvent):void {
removeChild(loader);
}
}
}
and I am trying to access the test variable from the loaded swf with this code
trace(MovieClip(parent.parent).testVar);
EDIT#2
If I addChild(loader)
not in the onCardInit but in the onViewClick and in the first frame of the loaded swf i have Object(parent.parent).testVar
it works...but why it doesn't want to be inside the onCardInit function?
You have just one loader
variable and you're creating four Loader
instances and assigning them to it - so if you are clicking all four of them in quick succession, the loader
variable will effectively contain the Loader
object corresponding to the last click. All your addChild
calls will act on that same Loader
object - the others will not be added and their parents will continue to be null
Make the following changes to the code:
private function onCardInit(e:Event):void
{
addChild(LoaderInfo(e.currentTarget).loader);
var content:DisplayObject = loader.content;
trace(content);
trace(content.closeButton);
content.closeButton.addEventListener(MouseEvent.CLICK, onCloseClick);
}
private function onCloseClick(e:MouseEvent):void
{
trace(e.currentTarget);//should be the closeButton
trace(e.currentTarget.parent);//should be the loaded swf
trace(e.currentTarget.parent.parent);//should be the Loader object that loaded it
//The following will work only if last three traced correctly
removeChild(e.currentTarget.parent.parent);
}
Answer to the following update in the question:
If I
addChild(loader)
in theonViewClick
instead ofonCardInit
, thenObject(parent.parent).testVar
in the first frame of the loaded swf works. Why doesn't it work if I addChild inside the onCardInit function?
Again, that might be because you are adding a different loader
object - are you clicking on more than one viewbuttons? Click on a view-button and wait till it is loaded to see it working.