Flex Examples » UIDUtil http://blog.flexexamples.com Just a bunch of Adobe Flex Examples Wed, 26 Jan 2011 18:09:51 +0000 en hourly 1 Creating unique identifiers for objects using the getUID() method http://blog.flexexamples.com/2007/11/01/creating-unique-identifiers-for-objects-using-the-getuid-method/ http://blog.flexexamples.com/2007/11/01/creating-unique-identifiers-for-objects-using-the-getuid-method/#comments Fri, 02 Nov 2007 02:45:14 +0000 Peter deHaan http://blog.flexexamples.com/2007/11/01/creating-unique-identifiers-for-objects-using-the-getuid-method/ 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 [...]]]> 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.

Full code after the jump.

View MXML

<?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>

View source is enabled in the following example.

 
]]> http://blog.flexexamples.com/2007/11/01/creating-unique-identifiers-for-objects-using-the-getuid-method/feed/ 3 Creating unique identifiers with Flex http://blog.flexexamples.com/2007/11/01/creating-unique-identifiers-with-flex/ http://blog.flexexamples.com/2007/11/01/creating-unique-identifiers-with-flex/#comments Fri, 02 Nov 2007 02:29:25 +0000 Peter deHaan http://blog.flexexamples.com/2007/11/01/creating-unique-identifiers-with-flex/ The following example shows you how you can create a unique indentifier (UID) with Flex using the UIDUtil class in the mx.utils package. By calling the static UIDUtil.createUID() method, you can easily create a hexadecimal string in the following format: “XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX”.

Full code after the jump.

View MXML

<?xml version="1.0" encoding="utf-8"?> <!-- [...]]]> The following example shows you how you can create a unique indentifier (UID) with Flex using the UIDUtil class in the mx.utils package. By calling the static UIDUtil.createUID() method, you can easily create a hexadecimal string in the following format: “XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX”.

Full code after the jump.

View MXML

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2007/11/01/creating-unique-identifiers-with-flex/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white"
        creationComplete="generateUID();">

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

            private function generateUID():void {
                lbl.text = UIDUtil.createUID();
            }
        ]]>
    </mx:Script>

    <mx:ApplicationControlBar dock="true">
        <mx:Button id="btn"
                label="Create UID"
                click="generateUID();" />
    </mx:ApplicationControlBar>

    <mx:Label id="lbl"
            fontSize="20"
            selectable="true" />

</mx:Application>

View source is enabled in the following example.

Note that the generated unique identifier is not a globally unique value, but rather a pseudo-random number generator based on the current time.

 
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