Problems with XML and Datagrid!

Question

Hi!
Trying to follow a similar idea to the app shown on the flex
homepage - i have the following code:
[code]
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="
http://www.adobe.com/2006/mxml"
creationComplete="srv.send()">
<mx:HTTPService id="srv"
url="lab-cs3.cs.st-andrews.ac.uk/~aa322/mytube.xml"/>
<mx:DataGrid
dataProvider="{srv.lastResult.videos.video}"/>
</mx:Application>
[/code]
However, when I run the application - it gives the following
error:
[RPC Fault faultString="Error #2148: SWF file
file:///C:/Documents and Settings/Andy/My Documents/Flex Builder
3/HelloWorld/bin-debug/HelloWorld.swf cannot access local resource
lab-cs3.cs.st-andrews.ac.uk/~aa322/mytube.xml. Only
local-with-filesystem and trusted local SWF files may access local
resources." faultCode="InvokeFailed" faultDetail="null"]
at mx.rpc::AbstractInvoker/
http://www.adobe.com/2006/flex/mx/internal::invoke()[E:\dev\3.0.x\frameworks\projects\rpc\ src\mx\rpc\AbstractInvoker.as:263
at mx.rpc.http.mxml::HTTPService/
http://www.adobe.com/2006/flex/mx/internal::invoke()[E:\dev\3.0.x\frameworks\projects\rpc\ src\mx\rpc\http\mxml\HTTPService.as:234
at
mx.rpc.http::HTTPService/send()[E:\dev\3.0.x\frameworks\projects\rpc\src\mx\rpc\http\HTTP Service.as:758]
at
mx.rpc.http.mxml::HTTPService/send()[E:\dev\3.0.x\frameworks\projects\rpc\src\mx\rpc\http \mxml\HTTPService.as:217]
at
HelloWorld/___HelloWorld_Application1_creationComplete()[C:\Documents
and Settings\Andy\My Documents\Flex Builder
3\HelloWorld\src\HelloWorld.mxml:2]
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at
mx.core::UIComponent/dispatchEvent()[E:\dev\3.0.x\frameworks\projects\framework\src\mx\co re\UIComponent.as:9051]
at mx.core::UIComponent/set
initialized()[E:\dev\3.0.x\frameworks\projects\framework\src\mx\core\UIComponent.as:1167]
at
mx.managers::LayoutManager/doPhasedInstantiation()[E:\dev\3.0.x\frameworks\projects\frame work\src\mx\managers\LayoutManager.as:698]
at Function/
http://adobe.com/AS3/2006/builtin::apply()
at
mx.core::UIComponent/callLaterDispatcher2()[E:\dev\3.0.x\frameworks\projects\framework\sr c\mx\core\UIComponent.as:8460]
at
mx.core::UIComponent/callLaterDispatcher()[E:\dev\3.0.x\frameworks\projects\framework\src \mx\core\UIComponent.as:8403]
and fails to connect to the xml i think.
Any ideas on what I am doing wrong?!
Thanks
Andy

Answer 1

You need to specify the full URL. I would also suggest using
a result handler to assign the xml to your DataGrid dataProvider.
Below is a sample. I set the resultFormat to e4x, which is XML.
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="
http://www.adobe.com/2006/mxml"
layout="absolute" creationComplete="srv.send()">
<mx:HTTPService id="srv"
url="
http://lab-cs3.cs.st-andrews.ac.uk/~aa322/mytube.xml"
result="videoListLoaded(event)"
resultFormat="e4x"/>
<mx:Script>
<![CDATA[
import mx.rpc.events.ResultEvent;
[Bindable] private var videoList:XML;
private function videoListLoaded(evt:ResultEvent):void {
videoList = evt.result as XML;
]]>
</mx:Script>
<mx:DataGrid x="10" y="10" id="videos_dg"
dataProvider="{videoList.video}">
<mx:columns>
<mx:DataGridColumn width="200" headerText="label"
dataField="label"/>
<mx:DataGridColumn width="300" headerText="URL"
dataField="url"/>
<mx:DataGridColumn width="50" headerText="views"
dataField="views"/>
<mx:DataGridColumn width="150" headerText="Category"
dataField="category"/>
</mx:columns>
</mx:DataGrid>
</mx:Application>
Vygo