adding twitter event handler example

03b-handling-events/TwitterTimeline.mxml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
+    width="500" height="500">
+    <mx:HTTPService
+        id="twitterService"
+        url="http://twitter.com/statuses/public_timeline.xml"
+        resultFormat="e4x"
+        result="twitterServiceResultHandler(event);"
+    />
+    <mx:Script>
+        <![CDATA[
+            import mx.rpc.events.ResultEvent;
+            private function twitterServiceResultHandler(event:ResultEvent):void
+            {
+                resultTxt.text = event.result.toString();
+            }
+        ]]>
+    </mx:Script>
+    <mx:Button id="myButton" label="Send HTTP Request"
+        click="twitterService.send()"/>
+    <mx:TextArea id="resultTxt" width="100%" height="100%"/>
+</mx:Application>