Setting the label placement on a RadioButtonGroup in Flex

The following example shows how you can set the label placement on a series of RadioButton controls in a Flex RadioButtonGroup by setting the labelPlacement property.

Full code after the jump.

View MXML

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2008/06/19/setting-the-label-placement-on-a-radiobuttongroup-in-flex/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white">

    <mx:ApplicationControlBar dock="true">
        <mx:Form styleName="plain">
            <mx:FormItem label="labelPlacement:">
                <mx:ComboBox id="comboBox"
                        dataProvider="[left, right, top, bottom]"
                        selectedIndex="1" />
            </mx:FormItem>
        </mx:Form>
    </mx:ApplicationControlBar>

    <mx:RadioButtonGroup id="radioGroup"
            labelPlacement="{comboBox.selectedItem}" />

    <mx:HBox horizontalAlign="left" verticalGap="15">
        <mx:RadioButton id="radioButton1"
                label="Red"
                group="{radioGroup}"
                opaqueBackground="0xFF00FF" />
        <mx:RadioButton id="radioButton2"
                label="Orange"
                group="{radioGroup}"
                opaqueBackground="0xFF00FF" />
        <mx:RadioButton id="radioButton3"
                label="Yellow"
                group="{radioGroup}"
                opaqueBackground="0xFF00FF" />
        <mx:RadioButton id="radioButton4"
                label="Green"
                group="{radioGroup}"
                opaqueBackground="0xFF00FF" />
        <mx:RadioButton id="radioButton5"
                label="Blue"
                group="{radioGroup}"
                opaqueBackground="0xFF00FF" />
    </mx:HBox>

</mx:Application>

View source is enabled in the following example.

You can also set the labelPlacement property using ActionScript, as seen in the following example:

View MXML

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2008/06/19/setting-the-label-placement-on-a-radiobuttongroup-in-flex/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white">

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

            private function comboBox_change(evt:ListEvent):void {
                var value:String = evt.currentTarget.selectedItem;
                radioGroup.labelPlacement = value;
            }
        ]]>
    </mx:Script>

    <mx:ApplicationControlBar dock="true">
        <mx:Form styleName="plain">
            <mx:FormItem label="labelPlacement:">
                <mx:ComboBox id="comboBox"
                        dataProvider="[left, right, top, bottom]"
                        selectedIndex="1"
                        change="comboBox_change(event);" />
            </mx:FormItem>
        </mx:Form>
    </mx:ApplicationControlBar>

    <mx:RadioButtonGroup id="radioGroup" />

    <mx:HBox horizontalAlign="left">
        <mx:RadioButton id="radioButton1"
                label="Red"
                group="{radioGroup}"
                opaqueBackground="0xFF00FF" />
        <mx:RadioButton id="radioButton2"
                label="Orange"
                group="{radioGroup}"
                opaqueBackground="0xFF00FF" />
        <mx:RadioButton id="radioButton3"
                label="Yellow"
                group="{radioGroup}"
                opaqueBackground="0xFF00FF" />
        <mx:RadioButton id="radioButton4"
                label="Green"
                group="{radioGroup}"
                opaqueBackground="0xFF00FF" />
        <mx:RadioButton id="radioButton5"
                label="Blue"
                group="{radioGroup}"
                opaqueBackground="0xFF00FF" />
    </mx:HBox>

</mx:Application>