The following example shows how you can disable a group of radio buttons by setting the Boolean enabled property on a Spark RadioButtonGroup control in Flex 4.

Full code after the jump.

The following example(s) require Flash Player 10 and the Adobe Flex 4 SDK. To download the Adobe Flash Builder 4 trial, see http://www.adobe.com/products/flex/. To download the latest nightly build of the Flex 4 SDK, see http://opensource.adobe.com/wiki/display/flexsdk/Download+Flex+4.
For more information on getting started with Flex 4 and Flash Builder 4, see the official Adobe Flex Team blog.

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2009/04/03/disabling-a-spark-radiobuttongroup-in-flex-gumbo/ -->
<s:Application name="Spark_RadioButtonGroup_enabled_test"
        xmlns:fx="http://ns.adobe.com/mxml/2009"
        xmlns:s="library://ns.adobe.com/flex/spark"
        xmlns:mx="library://ns.adobe.com/flex/halo"
        initialize="sdkVer.text = mx_internal::VERSION;">
    <s:layout>
        <s:BasicLayout />
    </s:layout>

    <fx:Declarations>
        <s:RadioButtonGroup id="radioBtnGroup"
                enabled="{checkBox.selected}" />
    </fx:Declarations>

    <s:CheckBox id="checkBox"
            label="enabled"
            selected="true"
            x="10"
            y="10" />

    <s:VGroup horizontalCenter="0" verticalCenter="0">
        <s:RadioButton id="radioBtn1"
                label="Red"
                group="{radioBtnGroup}" />
        <s:RadioButton id="radioBtn2"
                label="Orange"
                group="{radioBtnGroup}" />
        <s:RadioButton id="radioBtn3"
                label="Yellow"
                group="{radioBtnGroup}" />
        <s:RadioButton id="radioBtn4"
                label="Green"
                group="{radioBtnGroup}" />
        <s:RadioButton id="radioBtn5"
                label="Blue"
                group="{radioBtnGroup}" />
    </s:VGroup>

    <s:SimpleText id="sdkVer"
            right="10"
            bottom="10" />

</s:Application>

This entry is based on a beta version of the Flex 4 SDK and therefore is very likely to change as development of the Flex SDK continues. The API can (and will) change causing examples to possibly not compile in newer versions of the Flex 4 SDK.

 
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About The Author

Peter deHaan

Peter deHaan currently works for Adobe on the Flex SDK QA team. While not working on Flex, Flash, and ColdFusion applications, Peter enjoys making up bios and writing in 3rd person. Peter's rarely updated blog can be found at blogs.adobe.com/pdehaan/, actionscriptexamples.com, airexamples.com, and coldfusionexamples.com.

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