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Loading an XML Config File with AS3

/ Published in: ActionScript 3
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  1. package
  2. {
  3.  
  4. 	import flash.display.Loader;
  5. 	import flash.display.MovieClip;
  6. 	import flash.events.Event;
  7. 	import flash.net.URLLoader;
  8. 	import flash.net.URLRequest;
  9.  
  10. 	public class Main extends MovieClip
  11. 	{
  12.  
  13. 		private var configXMLPath:String;
  14.  
  15. 		public function Main()
  16. 		{
  17. 			//Set the path of the xml file that defines the loaded images
  18. 			if (root.loaderInfo.parameters.configXMLPath)
  19. 			{
  20. 				//This allows you to define the location of the config file in the embed parameters on the page
  21. 				configXMLPath = root.loaderInfo.parameters.configXMLPath;
  22. 			}
  23. 			else
  24. 			{
  25. 				//Default to a config.xml file at the same level as the swf.
  26. 				configXMLPath = "config.xml";
  27. 			}
  28.  
  29. 			LoadConfigXML();
  30. 		}
  31.  
  32.  
  33. 		public function LoadConfigXML():void
  34. 		{
  35. 			var xmlURL:String = configXMLPath;
  36.  
  37. 			var configRequest:URLRequest = new URLRequest();
  38. 			configRequest.url = xmlURL;
  39.  
  40. 			var assetLoader:URLLoader = new URLLoader();
  41. 			assetLoader.addEventListener(Event.COMPLETE, ParseConfigXML);
  42. 			assetLoader.load(configRequest);
  43. 		}
  44.  
  45. 		private function ParseConfigXML(e:Event):void 
  46. 		{
  47.  
  48. 			var configXML:XML = new XML(e.target.data);
  49. 			if (configXML.title.@path)
  50. 			{
  51. 				addImageToStage(configXML.title.@path, Number(configXML.title.@x), Number(configXML.title.@y));
  52. 			}
  53.  
  54. 			if (configXML.images)
  55. 			{
  56. 				for each (var image:XML in configXML.images.*)
  57. 				{
  58. 					addImageToStage(image.@path, Number(image.@x), Number(image.@y));
  59. 				}
  60. 			}
  61.  
  62. 		}
  63.  
  64. 		private function addImageToStage(imgURL:String, imgX:Number, imgY:Number):void
  65. 		{
  66. 			try
  67. 			{
  68. 				var imgLoader:Loader = new Loader();
  69. 				var imageReq:URLRequest = new URLRequest(imgURL);
  70. 				imgLoader.load(imageReq);
  71. 				imgLoader.x = imgX;
  72. 				imgLoader.y = imgY;
  73. 				addChild(imgLoader);
  74. 			}
  75. 			catch (err:Error)
  76. 			{
  77. 				//Handle error here.
  78. 				trace(err.message);
  79. 			}
  80.  
  81. 		}
  82.  
  83. 	}
  84. }

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