Use HTTPService to load an image file

      
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">
  <mx:Script>
    
        import mx.controls.Image;

        import mx.controls.Alert;
        import mx.rpc.events.FaultEvent;
        import mx.rpc.events.ResultEvent;
        import flash.utils.describeType;

        function faultHandler(event:FaultEvent):void {
            Alert.show(event.fault.faultString);
        }

        function resultHandler(event:ResultEvent):void {
            Alert.show(describeType(event.result));

        }
  
  </mx:Script>
  <mx:HTTPService id="myHTTPService" url="http://localhost/a.png" fault="faultHandler(event)" result="resultHandler(event)" />
  <mx:VBox id="myVBox" width="100%" height="100%" />
  <mx:Button label="Invoke HTTPService" click="myHTTPService.send()" />
</mx:Application>

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Use HTTPService to load an image file : HTTPService « Data Model « Flex

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