Creating unique identifiers for objects using the getUID()

The following example shows how you can use the static UIDUtil.getUID() method to generate and retreive a unique identifier for an Object. The first time you click the Display UID button, an Alert control displays the generated UID and a string representation of the Object (yay ObjectUtil.toString()!). The second time you click the Display UID button, you’ll notice that a new parameter is added to the Object, mx_internal_uid

<? xml version="1.0" encoding="utf-8" ?>
<!--  http://blog.flexexamples.com/2007/11/01/creating-unique-identifiers-for-objects-using-the-getuid-method/  -->
< mx:Application  xmlns:mx ="http://www.adobe.com/2006/mxml"
        layout ="vertical"
        verticalAlign ="middle"
        backgroundColor ="white" >

     < mx:Script >
         <![CDATA[
            import mx.controls.Alert;
            import mx.utils.ObjectUtil;
            import mx.utils.UIDUtil;

            private function displayUID():void {
                var text:String = ObjectUtil.toString(myObj);
                var title:String = UIDUtil.getUID(myObj);
                Alert.show(text, title);
            }
         ]]>
     </ mx:Script >

     < mx:Object  id ="myObj"  name ="peter"  site ="flexexamples.com"   />

     < mx:ApplicationControlBar  dock ="true" >
         < mx:Button  label ="Display UID"
                click ="displayUID();"   />
     </ mx:ApplicationControlBar >

</ mx:Application >