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POTrouble With ActionScript Loader Events
 

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    <p>I am working with a loader to request an image from a WMS(Web Mapping Service). Everything thing is fine and dandy with a valid request. </p> <p>When a bad request is made to a WMS, a Standard Exception Document(XML) is usually returned. However, the loader doesn't fire any event (specifically the Complete or IOError events) when a bad request is made. </p> <p>Does anyone have any suggestions on how I can trap anything that is not an image that might be returned?</p> <pre><code>override protected function loadMapImage(loader:Loader):void { // update parameter values _params = new URLVariables(); _params.request = "GetMap"; _params.format = "image/png"; _params.version = "1.1.1"; _params.layers = this.layers; _params.styles = ""; _params.transparent = "TRUE"; _params.bbox = map.extent.xmin + "," + map.extent.ymin + "," + map.extent.xmax + "," + map.extent.ymax; _params.srs = "EPSG:" + map.spatialReference.wkid; _params.width = map.width; _params.height = map.height; _urlRequest = new URLRequest(this.url); _urlRequest.data = _params; configureListeners(loader.contentLoaderInfo); loader.load(_urlRequest); } private function configureListeners(dispatcher:IEventDispatcher):void { //dispatcher.addEventListener(Event.INIT, initHandler); //dispatcher.addEventListener(Event.UNLOAD, unloadHandler); dispatcher.addEventListener(Event.COMPLETE, completeHandler); //dispatcher.addEventListener(Event.OPEN, openHandler); //dispatcher.addEventListener(ProgressEvent.PROGRESS, progressHandler); //dispatcher.addEventListener(SecurityErrorEvent.SECURITY_ERROR, securityErrorHandler); //dispatcher.addEventListener(HTTPStatusEvent.HTTP_STATUS, httpStatusHandler); dispatcher.addEventListener(IOErrorEvent.IO_ERROR, ioErrorHandler); //dispatcher.addEventListener(Event.ACTIVATE, activateHandler); //dispatcher.addEventListener(Event.DEACTIVATE, deactivateHandler); } private function ioErrorHandler(event:IOErrorEvent):void { trace('ioErrorHandler event'); } private function completeHandler(event:Event):void { trace('completeHandler event'); } </code></pre>
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