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The following example shows how you can add a background image to a Flex 4 Spark Application by creating a custom skin with a BitmapGraphic and setting the skinClass style in MXML, CSS, or ActionScript.
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 . To download the latest nightly build of the Flex 4 SDK, see .
For more information on getting started with Flex 4 and Flash Builder 4, see the official . The custom skin class, skins/CustomApplicationSkin.mxml, is as follows:
You can also set the skinClass style in an external .CSS file or <Style/> block, as seen in the following example:
@namespace s "library://ns.adobe.com/flex/spark"; s|Application { skinClass: ClassReference("skins.CustomApplicationSkin"); }
Or, you can set the skinClass style using ActionScript, as seen in the following example:
setStyle("skinClass", CustomApplicationSkin); } ]]>
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.