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·½·¨Ò»£ºÀûÓà brokenImageSkin ·ç¸ñÏÔʾһ¸öĬÈϵÄͼ£¬Ö»ÐèÉèÖÃCSS¾ÍÐÐÁË£¬ÈçÏ£º
<mx:Style>
     Image {
         brokenImageSkin: Embed("assets/404.jpg");
     }
 </mx:Style>
 
·½·¨¶þ£º¼àÌýImage×é¼þµÄIOErrorEvent.IO_ERRORʼþ£¬´úÂëÈçÏ£º
private function errorHandler():void
{
    image.source = "assets/404.jpg";
}
<mx:Image id="image" source="http://²»´æÔÚ.jpg" ioError="errorHandler()"/>
·½·¨Èý£º¼Ì³ÐImageÀ࣬¸²¸ÇÆäset source·½·¨£¬ÈçÏ£º
override public function set source(value:Object):void
{
    if(!value || value == ""){
        value = "assets/404.jpg";
    }
    super.source = value;
}
ÍƼöʹÓõÚÈýÖÖ·½·¨£¬ÒòΪµÚÒ»ÖÖ·½·¨¸úµÚ¶þÖÖ·½·¨Óиö¹²Í¬µÄȱµã£¬ÈçÏÂÇé¿ö£º
<mx:Image id="image" source="" ioError="errorHandler()"/>
´ËʱÎÞÂÛÊǵÚÒ»ÖÖ·½·¨»¹ÊǵڶþÖÖ·½·¨¶¼²»»áÏÔʾĬÈÏͼƬ£¬¶øµÚÈýÖÖ·½·¨¾Í¿ÉÒÔ½â¾öÕâ¸öÎÊÌâ¡£
µÚÈýÖÖ·½·¨¾ßÌåʵÏÖ¼°Ê¹Ó÷½·¨ÈçÏ£º
MyImage.as
package
{
import flash.events.IOErrorEvent;

import mx.controls.Image;

public class MyImage extends Image
{
private var defaultImage:String = "assets/404.jpg";

public function MyImage()
{
this.addEventListener(IOErrorEvent.IO_ERROR, ioErrorHandler);
}

override public function set source(value:Object):void
{
if(!value || value == ""){
value = defaultImage;
}
super.source = value;
}

private function ioErrorHandler(event:IOErrorEvent):void
{
super.source = defaultImage;
}
}
}
Main.mxml
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" xmlns:local="*">
<local:MyImage id="image" source=""/>
</mx:Application>
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Flex Builder 3 ÏÂÔØ°²×°Óë×¢²áÂë(ת)

Flex Builder 3 ÏÂÔØ°²×°Óë×¢²áÂë(ת)
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flex swfloader unload

 
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ʹÓÃLoaderÈ¥loadÒ»¸öswf:
var fileURL:String = “assets/test.swf”
var swfLoader:Loader = new Loader();
swfLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, swfLoaded);
swfLoader.load(new URLRequest(fileURL));
function swfLoaded(evt:Event):void{
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    Eclipse 3.3.x (32-bit)
    Sun JRE 1.5.x or newer (32-bit)
    Firefox 3.0 (32-bit)
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