Flex Examples

The following example shows you how you can set the selected index of a LinkBar control in Flex by setting the selectedIndex property using MXML or ActionScript.

Full code after the jump.

View MXML

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2008/01/20/setting-the-selected-index-of-a-flex-linkbar-control/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white">

    <mx:Array id="arr">
        <mx:Object label="One" />
        <mx:Object label="Two" />
        <mx:Object label="Three" />
        <mx:Object label="Four" />
    </mx:Array>

    <mx:ApplicationControlBar dock="true">
        <mx:Form styleName="plain">
            <mx:FormItem label="selectedIndex:">
                <mx:HSlider id="slider"
                        minimum="0"
                        maximum="{linkBar.dataProvider.length - 1}"
                        liveDragging="true"
                        snapInterval="1"
                        tickInterval="1"
                        dataTipPrecision="0" />
            </mx:FormItem>
        </mx:Form>
    </mx:ApplicationControlBar>

    <mx:LinkBar id="linkBar"
            dataProvider="{arr}"
            selectedIndex="{slider.value}" />

</mx:Application>

View source is enabled in the following example.

You can also set the selectedIndex property in ActionScript, as shown in the following snippet:

<mx:Script>
    <![CDATA[
        import mx.events.SliderEvent;

        private function slider_change(evt:SliderEvent):void {
            linkBar.selectedIndex = evt.value;
        }
    ]]>
</mx:Script>