Setting the content background color on an MX Accordion container in Flex 4

In a previous example, “Setting the base color on an MX Accordion container in Flex 4”, we saw how you could set the base color on an MX Accordion container in Flex 4 by setting the baseColor style.

The following example shows how you can set the content background color on an MX Accordion container in Flex 4 by setting the contentBackgroundColor style.

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/2009/08/15/setting-the-content-background-color-on-a-halo-accordion-container-in-flex-4/ -->
<s:Application name="MX_Accordion_contentBackgroundColor_test"
        xmlns:fx="http://ns.adobe.com/mxml/2009"
        xmlns:s="library://ns.adobe.com/flex/spark"
        xmlns:mx="library://ns.adobe.com/flex/mx">
 
    <mx:ApplicationControlBar width="100%" cornerRadius="0">
        <mx:Form styleName="plain">
            <mx:FormItem label="contentBackgroundColor:">
                <mx:ColorPicker id="colorPicker" selectedColor="white" />
            </mx:FormItem>
        </mx:Form>
    </mx:ApplicationControlBar>
 
    <mx:Accordion id="accordion"
            contentBackgroundColor="{colorPicker.selectedColor}"
            width="300" height="200"
            horizontalCenter="0" verticalCenter="0">
        <mx:VBox label="One"></mx:VBox>
        <mx:VBox label="Two"></mx:VBox>
        <mx:VBox label="Three"></mx:VBox>
        <mx:VBox label="Four"></mx:VBox>
        <mx:VBox label="Five"></mx:VBox>
    </mx:Accordion>
 
</s:Application>

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View source is enabled in the following example.

You can also set the contentBackgroundColor style in an external .CSS file or <Style/> block, as seen in the following example:

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2009/08/15/setting-the-content-background-color-on-a-halo-accordion-container-in-flex-4/ -->
<s:Application name="MX_Accordion_contentBackgroundColor_test"
        xmlns:fx="http://ns.adobe.com/mxml/2009"
        xmlns:s="library://ns.adobe.com/flex/spark"
        xmlns:mx="library://ns.adobe.com/flex/mx">
 
    <fx:Style>
        @namespace s "library://ns.adobe.com/flex/spark";
        @namespace mx "library://ns.adobe.com/flex/mx";
 
        mx|Accordion {
            contentBackgroundColor: haloBlue;
        }
    </fx:Style>
 
    <mx:Accordion id="accordion"
            width="300" height="200"
            horizontalCenter="0" verticalCenter="0">
        <mx:VBox label="One"></mx:VBox>
        <mx:VBox label="Two"></mx:VBox>
        <mx:VBox label="Three"></mx:VBox>
        <mx:VBox label="Four"></mx:VBox>
        <mx:VBox label="Five"></mx:VBox>
    </mx:Accordion>
 
</s:Application>

Or, you can set the contentBackgroundColor style using ActionScript, as seen in the following example:

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2009/08/15/setting-the-content-background-color-on-a-halo-accordion-container-in-flex-4/ -->
<s:Application name="MX_Accordion_contentBackgroundColor_test"
        xmlns:fx="http://ns.adobe.com/mxml/2009"
        xmlns:s="library://ns.adobe.com/flex/spark"
        xmlns:mx="library://ns.adobe.com/flex/mx">
 
    <fx:Script>
        <![CDATA[
            import mx.events.ColorPickerEvent;
 
            protected function colorPicker_change(evt:ColorPickerEvent):void {
                accordion.setStyle("contentBackgroundColor", evt.color);
            }
        ]]>
    </fx:Script>
 
    <mx:ApplicationControlBar width="100%" cornerRadius="0">
        <mx:Form styleName="plain">
            <mx:FormItem label="contentBackgroundColor:">
                <mx:ColorPicker id="colorPicker"
                        selectedColor="white"
                        change="colorPicker_change(event);"/>
            </mx:FormItem>
        </mx:Form>
    </mx:ApplicationControlBar>
 
    <mx:Accordion id="accordion"
            width="300" height="200"
            horizontalCenter="0" verticalCenter="0">
        <mx:VBox label="One"></mx:VBox>
        <mx:VBox label="Two"></mx:VBox>
        <mx:VBox label="Three"></mx:VBox>
        <mx:VBox label="Four"></mx:VBox>
        <mx:VBox label="Five"></mx:VBox>
    </mx:Accordion>
 
</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.