jsonを読み込んで完了をコールバックするクラス

jsonloader.as

package hrkd {
	import flash.events.Event;
	import flash.events.IOErrorEvent;
	import flash.net.URLLoader;
	import flash.net.URLRequest;
	import com.adobe.serialization.json.JSON;

	public class jsonloader {
		private var myLoader;
		private var _func:Function;
		private var _errfunc:Function;

		public var _result:Object;
		public var resultErr:Object;

		public function jsonloader(mf:String,f:Function,ef:Function):void {
			// constructor code
			_func = f;
			_errfunc = ef;

			myLoader = new URLLoader();
			myLoader.load(new URLRequest(mf));
			myLoader.addEventListener(Event.COMPLETE, completeHandler);
			myLoader.addEventListener(IOErrorEvent.IO_ERROR, ioErrorHandler);
		}
		
		private function completeHandler(event:Event):void {
			myLoader.removeEventListener(Event.COMPLETE, completeHandler);
			myLoader.removeEventListener(IOErrorEvent.IO_ERROR, ioErrorHandler);
			_result = JSON.decode(event.target.data);
			_func();
		}

		private function ioErrorHandler(event:IOErrorEvent):void {
			resultErr = event;
			_errfunc();
        }
	}
}

//var loader = new jsonloader('data/data.json',
//	function(){
//		trace(loader._result);
//	},function(){
//		trace(loader.resultErr)
//	}
//);