I am following this help page to create a custom preloader extending Sprite to load an animation SWF, but it is not working (the animation SWF is not displaying):
http://help.adobe.com/en_US/flex/using/WS2db454920e96a9e51e63e3d11c0bf69084-7e3c.html#WS2db454920e96...
I know the Animation.swf file is okay, because if I load it into the main app it displays and runs.
The preloader works if an image is loaded by the preloader instead of the animation SWF.
--------------------- test.mxml (main app) -----------------
BTW, I typically have many more lines of ComboBox in the app to force the preloader to display, but limiting number of lines here.
<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx"
preloader="customPreloaders.SparkAnimationProgressBar" cachePolicy="off">
<s:layout>
<s:VerticalLayout/>
</s:layout>
<s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/>
<s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/>
<s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/>
<s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/>
<s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/>
<s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/>
<s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/>
<s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/>
<s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/>
<s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/>
<s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/>
<s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/>
<s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/>
<s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/>
<s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/><s:ComboBox/>
</s:Application>
--------- customPreloaders.SparkAnimationProgressBar.as ----------------
package customPreloaders
{
import flash.display.*;
import flash.events.*;
import flash.net.*;
import flash.utils.*;
import mx.events.*;
import mx.preloaders.*;
public class SparkAnimationProgressBar extends Sprite
implements IPreloaderDisplay{
// Loader instance to load the animation SWF file.
private var animationLdr:flash.display.Loader;
public function SparkAnimationProgressBar() {
super();
}
// Add event listeners.
public function set preloader(preloader:Sprite):void {
preloader.addEventListener(
ProgressEvent.PROGRESS, handleProgress);
preloader.addEventListener(
Event.COMPLETE, handleComplete);
preloader.addEventListener(
FlexEvent.INIT_PROGRESS, handleInitProgress);
preloader.addEventListener(
FlexEvent.INIT_COMPLETE, handleInitComplete);
}
// Initialize the Loader control in the override
// of IPreloaderDisplay.initialize().
public function initialize():void {
animationLdr = new flash.display.Loader();
animationLdr.contentLoaderInfo.addEventListener(
Event.COMPLETE, loader_completeHandler);
animationLdr.load(new URLRequest("assets/Animation.swf"));
}
// After the SWF file loads, set the size of the Loader control.
private function loader_completeHandler(event:Event):void
{
addChild(animationLdr);
animationLdr.width = 200;
animationLdr.height= 200;
animationLdr.x = 100;
animationLdr.y = 100;
}
// Define empty event listeners.
private function handleProgress(event:ProgressEvent):void {}
private function handleComplete(event:Event):void {}
private function handleInitProgress(event:Event):void {}
private function handleInitComplete(event:Event):void {
var timer:Timer = new Timer(2000,1);
timer.addEventListener(TimerEvent.TIMER, dispatchComplete);
timer.start();
}
private function dispatchComplete(event:TimerEvent):void {
dispatchEvent(new Event(Event.COMPLETE));
}
// IPreloaderDisplay interface methods.
public function get backgroundColor():uint {
return 0;
}
public function set backgroundColor(value:uint):void {}
public function get backgroundAlpha():Number {
return 0;
}
public function set backgroundAlpha(value:Number):void {}
public function get backgroundImage():Object {
return undefined;
}
public function set backgroundImage(value:Object):void {}
public function get backgroundSize():String {
return "";
}
public function set backgroundSize(value:String):void {}
public function get stageWidth():Number {
return 200;
}
public function set stageWidth(value:Number):void {}
public function get stageHeight():Number {
return 200;
}
public function set stageHeight(value:Number):void {}
}
}
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