Hello, First off, im new to flex, this is my first app im trying to put into production.
Im trying to put this upload http://weblog.cahlan.com/2006/09/uploading-files-with-flex-and-php.html into a state other then the beginning state and im getting: TypeError: Error #1009: Cannot access a property or method of a null object reference. at main/onSelectFile() Heres the as: [code]=========================================================== import mx.controls.Alert; import mx.collections.XMLListCollection; import mx.collections.ArrayCollection; import mx.rpc.events.ResultEvent; import mx.rpc.events.FaultEvent; import mx.utils.ObjectUtil; import flash.events.*; import mx.controls.*; import mx.managers.*; import mx.events.*; import flash.events.*; import flash.net.*; private const _strUploadDomain:String = "http://data/";; private const _strUploadScript:String = _strUploadDomain + "upload.php"; private var _arrUploadFiles:Array; private var _numCurrentUpload:Number = 0; private var _refAddFiles:FileReferenceList; private var _refUploadFile:FileReference; private var _winProgress:winProgress; private function initApp():void { Security.allowDomain("*"); _arrUploadFiles = new Array(); } // Called to add file(s) for upload private function addFiles():void { _refAddFiles = new FileReferenceList(); _refAddFiles.addEventListener(Event.SELECT, onSelectFile); _refAddFiles.browse(); } // Called to remove selected file(s) for upload private function removeFiles():void { var arrSelected:Array = listFiles.selectedIndices; for (var i:Number = 0; i < arrSelected.length; i++) { _arrUploadFiles[Number(arrSelected[i])] = null; } for (var j:Number = 0; j < _arrUploadFiles.length; j++) { if (_arrUploadFiles[j] == null) { _arrUploadFiles.splice(j, 1); j--; } } listFiles.dataProvider = _arrUploadFiles; listFiles.selectedIndex = 0; if (_arrUploadFiles.length == 0) { btnUpload.enabled = false; } else { btnUpload.enabled = true; } } // Called when a file is selected private function onSelectFile(event:Event):void { var arrFoundList:Array = new Array(); // Get list of files from fileList, make list of files already on upload list for (var i:Number = 0; i < _arrUploadFiles.length; i++) { for (var j:Number = 0; j < _refAddFiles.fileList.length; j++) { if (_arrUploadFiles[i].label == _refAddFiles.fileList[j].name) { arrFoundList.push(_refAddFiles.fileList[j].name); _refAddFiles.fileList.splice(j, 1); j--; } } } if (_refAddFiles.fileList.length >= 1) { for (var k:Number = 0; k < _refAddFiles.fileList.length; k++) { _arrUploadFiles.push({label:_refAddFiles.fileList[k].name, data:_refAddFiles.fileList[k]}); } listFiles.dataProvider = _arrUploadFiles; listFiles.selectedIndex = _arrUploadFiles.length - 1; } if (arrFoundList.length >= 1) { Alert.show("The file(s): \n\n⢠" + arrFoundList.join("\n⢠") + "\n\n...are already on the upload list. Please change the filename(s) or pick a different file.", "File(s) already on list"); } if (_arrUploadFiles.length == 0) { btnUpload.enabled = false; } else { btnUpload.enabled = true; } } // Cancel and clear eventlisteners on last upload private function clearUpload():void { _numCurrentUpload = 0; _refUploadFile.removeEventListener(ProgressEvent.PROGRESS, onUploadProgress); _refUploadFile.removeEventListener(Event.COMPLETE, onUploadComplete); _refUploadFile.removeEventListener(IOErrorEvent.IO_ERROR, onUploadIoError); _refUploadFile.removeEventListener(SecurityErrorEvent.SECURITY_ERROR, onUploadSecurityError); _refUploadFile.cancel(); } // Called to upload file based on current upload number private function startUpload(booIsFirst:Boolean):void { if (booIsFirst) { _numCurrentUpload = 0; } if (_arrUploadFiles.length > 0) { _winProgress = winProgress(PopUpManager.createPopUp(this, winProgress, true)); _winProgress.btnCancel.removeEventListener("click", onUploadCanceled); _winProgress.btnCancel.addEventListener("click", onUploadCanceled); _winProgress.title = "Uploading file to " + _strUploadDomain; _winProgress.txtFile.text = _arrUploadFiles[_numCurrentUpload].label; _winProgress.progBar.label = "0%"; PopUpManager.centerPopUp(_winProgress); // Variables to send along with upload var sendVars:URLVariables = new URLVariables(); sendVars.action = "upload"; var request:URLRequest = new URLRequest(); request.data = sendVars; request.url = _strUploadScript; request.method = URLRequestMethod.POST; _refUploadFile = new FileReference(); _refUploadFile = _arrUploadFiles[_numCurrentUpload].data; _refUploadFile.addEventListener(ProgressEvent.PROGRESS, onUploadProgress); _refUploadFile.addEventListener(Event.COMPLETE, onUploadComplete); _refUploadFile.addEventListener(IOErrorEvent.IO_ERROR, onUploadIoError); _refUploadFile.addEventListener(SecurityErrorEvent.SECURITY_ERROR, onUploadSecurityError); _refUploadFile.upload(request, "file", false); } } // Called on upload cancel private function onUploadCanceled(event:Event):void { PopUpManager.removePopUp(_winProgress); _winProgress == null; _refUploadFile.cancel(); clearUpload(); } // Get upload progress private function onUploadProgress(event:ProgressEvent):void { var numPerc:Number = Math.round((Number(event.bytesLoaded) / Number(event.bytesTotal)) * 100); _winProgress.progBar.setProgress(numPerc, 100); _winProgress.progBar.label = numPerc + "%"; _winProgress.progBar.validateNow(); if (numPerc > 90) { _winProgress.btnCancel.enabled = false; } else { _winProgress.btnCancel.enabled = true; } } // Called on upload complete private function onUploadComplete(event:Event):void { _numCurrentUpload++; PopUpManager.removePopUp(_winProgress); if (_numCurrentUpload < _arrUploadFiles.length) { startUpload(false); } else { Alert.show("File(s) have been uploaded.", "Upload successful"); } } // Called on upload io error private function onUploadIoError(event:IOErrorEvent):void { Alert.show("IO Error in uploading file.", "Error"); PopUpManager.removePopUp(_winProgress); _winProgress == null; _refUploadFile.cancel(); clearUpload(); } // Called on upload security error private function onUploadSecurityError(event:SecurityErrorEvent):void { Alert.show("Security Error in uploading file.", "Error"); PopUpManager.removePopUp(_winProgress); _winProgress == null; _refUploadFile.cancel(); clearUpload(); } [/code]=========================================================== Anyone have any ideas, im racking my brain trying to grasp this.
