Toggling variable row heights on a Spark VGroup container in Flex 4

The following example shows how you can toggle variable item/row heights on a Spark VGroup container in Flex 4 by setting the Boolean variableRowHeight property.

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 www.adobe.com/products/flex/. To download the latest nightly build of the Flex 4 SDK, see 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/2009/10/02/toggling-variable-row-heights-on-a-spark-vgroup-container-in-flex-4/ -->
<s:Application name="Spark_VGroup_variableRowHeight_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">
    <s:controlBarContent>
        <s:CheckBox id="chckBx" label="variableRowHeight" selected="true" />
    </s:controlBarContent>
 
    <s:VGroup id="vGr"
            variableRowHeight="{chckBx.selected}"
            width="200"
            horizontalCenter="0" verticalCenter="0">
        <s:Border id="brdr1"
                backgroundColor="red"
                width="100%" height="30">
            <s:Label text="{brdr1.width}x{brdr1.height}"
                    horizontalCenter="0" verticalCenter="0" />
        </s:Border>
        <s:Border id="brdr2"
                backgroundColor="haloOrange"
                width="100%" height="60">
            <s:Label text="{brdr2.width}x{brdr2.height}"
                    horizontalCenter="0" verticalCenter="0" />
        </s:Border>
        <s:Border id="brdr3"
                backgroundColor="yellow"
                width="100%" height="20">
            <s:Label text="{brdr3.width}x{brdr3.height}"
                    horizontalCenter="0" verticalCenter="0" />
        </s:Border>
        <s:Border id="brdr4"
                backgroundColor="haloGreen"
                width="100%" height="90">
            <s:Label text="{brdr4.width}x{brdr4.height}"
                    horizontalCenter="0" verticalCenter="0" />
        </s:Border>
        <s:Border id="brdr5"
                backgroundColor="haloBlue"
                width="100%" height="40">
            <s:Label text="{brdr5.width}x{brdr5.height}"
                    horizontalCenter="0" verticalCenter="0" />
        </s:Border>
    </s:VGroup>
 
</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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