Displaying RadioButton controls using the Repeater in Flex

The following example shows how you can display a series of RadioButtons using the Flex Repeater with an Array data provider.

Full code after the jump.

View MXML

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2008/05/28/displaying-radiobutton-controls-using-the-repeater-in-flex/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white">

    <mx:Style>
        Alert {
            backgroundAlpha: 0.8;
            backgroundColor: black;
            borderAlpha: 0.8;
            borderColor: black;
        }
    </mx:Style>

    <mx:Script>
        <![CDATA[
            import mx.controls.Alert;
            import mx.controls.RadioButton;

            private function radioButton_change(evt:Event):void {
                var radio:RadioButton = RadioButton(evt.currentTarget);
                var item:Object = radio.getRepeaterItem();
                var cssObj:CSSStyleDeclaration;
                cssObj = StyleManager.getStyleDeclaration("Alert");
                cssObj.setStyle("modalTransparencyColor", item.data);
                cssObj.setStyle("themeColor", item.data);
                Alert.show(item.label, "getRepeaterItem()");
            }
        ]]>
    </mx:Script>

    <mx:Array id="arr">
        <mx:Object label="Red" data="red" />
        <mx:Object label="Orange" data="haloOrange" />
        <mx:Object label="Yellow" data="yellow" />
        <mx:Object label="Green" data="haloGreen" />
        <mx:Object label="Blue" data="haloBlue" />
    </mx:Array>

    <mx:ApplicationControlBar dock="true">
        <mx:Form styleName="plain">
            <mx:FormItem label="selectedValue:">
                <mx:Label text="{radioGroup.selectedValue}" />
            </mx:FormItem>
        </mx:Form>
    </mx:ApplicationControlBar>

    <mx:HBox id="hb" horizontalGap="60">
        <mx:RadioButtonGroup id="radioGroup" />
        <mx:Repeater id="radioRepeater"
                dataProvider="{arr}">
            <mx:RadioButton id="radioButtons"
                    label="{radioRepeater.currentItem.label}"
                    group="{radioGroup}"
                    change="radioButton_change(event);" />
        </mx:Repeater>
    </mx:HBox>

</mx:Application>

View source is enabled in the following example.

Tagged as: getRepeaterItem(), selectedValue