先看效果图： 
其中Test.mxml为：
复制代码 代码如下:
<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600">
<fx:Declarations>
<!-- 将非可视元素（例如服务、值对象）放在此处 -->
</fx:Declarations>
<mx:HBox horizontalCenter="0" verticalCenter="1">
<s:Button id="rightButton" skinClass="components.RightButtonSkin" />
<s:Button id="cancelButton" skinClass="components.CancelButtonSkin" />
<s:Button id="newStyleButton" skinClass="components.NewStyleButtonSkin"/>
<s:Button id="StyleButton" skinClass="components.StyleButtonSkin"/>
</mx:HBox>
</s:Application>
RightButtonSkin.mxml(确定按钮皮肤)：
复制代码 代码如下:
<?xml version="1.0" encoding="utf-8"?>
<s:Skin xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark" alpha.disabled=".5">
<!-- states -->
<s:states>
<s:State name="up" />
<s:State name="over" />
<s:State name="down" />
<s:State name="disabled" />
</s:states>
<!-- border and fill -->
<s:Rect id="rect" radiusX="4" radiusY="4" top="0" right="0"
bottom="0" left="0">
<s:fill>
<s:SolidColor color="0xFAFAFA" color.over="0xEEEEEE"
color.down="0xEEEEEE"/>
</s:fill>
<s:stroke>
<s:SolidColorStroke color="0xCCCCCC" weight="1"/>
</s:stroke>
</s:Rect>
<!-- highlight on top -->
<s:Rect radiusX="4" radiusY="4" top="2" right="2" left="2"
height="50%">
<s:fill>
<s:LinearGradient rotation="90">
<s:GradientEntry color="0xFFFFFF" alpha=".5"/>
<s:GradientEntry color="0xFFFFFF" alpha=".1"/>
</s:LinearGradient>
</s:fill>
</s:Rect>
<s:Label text="确定" color="0x131313"
textAlign="center"
fontFamily="宋体"
verticalAlign="middle"
horizontalCenter="0" verticalCenter="1"
left="30" right="30" top="8" bottom="8"
/>
</s:Skin>
NewStyleButtonSkin.mxml(新建按钮皮肤)：
ps：新建按钮上面那个icon是画上去的
复制代码 代码如下:
<?xml version="1.0" encoding="utf-8"?>
<s:Skin xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark" alpha.disabled=".5">
<!-- states -->
<s:states>
<s:State name="up" />
<s:State name="over" />
<s:State name="down" />
<s:State name="disabled" />
</s:states>
<!-- border and fill -->
<s:Rect id="rect" radiusX="4" radiusY="4" top="0" right="0"
bottom="0" left="0">
<s:fill>
<s:SolidColor color="0xFAFAFA" color.over="0xEEEEEE" color.down="0xEEEEEE"/>
</s:fill>
<s:stroke>
<s:SolidColorStroke color="0xCCCCCC" weight="1"/>
</s:stroke>
</s:Rect>
<!-- highlight on top -->
<s:Rect radiusX="4" radiusY="4" top="2" right="2" left="2"
height="50%">
<s:fill>
<s:LinearGradient rotation="90">
<s:GradientEntry color="0xFFFFFF" alpha=".5"/>
<s:GradientEntry color="0xFFFFFF" alpha=".1"/>
</s:LinearGradient>
</s:fill>
</s:Rect>
<s:Graphic>
<s:BitmapImage source="assets/round_plus2.png" left="8" top="6"/>
</s:Graphic>
<s:Label text="新建样式" color="0x131313"
fontFamily="宋体"
left="30" right="20" top="8" bottom="8"
/>
</s:Skin>
