Flex4 自定义皮肤的使用方法

skinClass的使用方法：
【1, 属性引用】

<s:Application name="Spark_Application_skinClass_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"
         skinClass="skins.CustomApplicationSkin">
</s:Application>

<s:Application name="Spark_Application_skinClass_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"
        skinClass="skins.CustomApplicationSkin">
</s:Application>

【2,css引入】

<fx:Style>
         @namespace s "library://ns.adobe.com/flex/spark";

        s|Application {
             skinClass: ClassReference("skins.CustomApplicationSkin");
        }
    </fx:Style>

<fx:Style>
        @namespace s "library://ns.adobe.com/flex/spark";
 
        s|Application {
            skinClass: ClassReference("skins.CustomApplicationSkin");
        }
    </fx:Style>

3,as代码指定，这个更适合动态皮肤

<fx:Script>
        <![CDATA[
             import skins.CustomApplicationSkin;

             protected function btn_click(evt:MouseEvent):void {
                 setStyle("skinClass", CustomApplicationSkin);
            }
        ]]>
    </fx:Script>