Flex布局小练--博文列表item布局实现

<s:ItemRenderer xmlns:fx="http://ns.adobe.com/mxml/2009" 
                xmlns:s="library://ns.adobe.com/flex/spark" 
                xmlns:mx="library://ns.adobe.com/flex/mx"
                autoDrawBackground="true">
    <s:layout>
        <s:VerticalLayout paddingTop="10" paddingBottom="10" paddingLeft="10" paddingRight="10" gap="0"/>
    </s:layout>
 
    <fx:Script>
        <![CDATA[
            import mx.core.FlexGlobals;
 
            import spark.components.RichText;
 
            [Bindable]
            public var titleStyle:String = "bold";
 
            [Bindable]
            public var contentStyle:String;
 
            protected function title_creationCompleteHandler(event:FlexEvent):void
            {
                title.setStyle("fontSize", "14");
                title.setStyle("color", "0x333333");
                title.setStyle("textAlign", "left");
                title.setStyle("fontWeight", titleStyle);
            }
 
            protected function content_creationCompleteHandler(event:FlexEvent):void
            {
                content.setStyle("fontSize", "12");
                content.setStyle("color", "0x666666");
                content.setStyle("textAlign", "left");
                content.setStyle("fontWeight", contentStyle);
            }
        ]]>
    </fx:Script>
 
    <s:Group width="100%" height="100%">
        <s:layout>
            <s:HorizontalLayout paddingTop="10" paddingBottom="10" paddingLeft="10" paddingRight="10" gap="10"/>
        </s:layout>
 
        <s:VGroup width="100%" height="100%">
            <s:RichText id="title" text="{data.title}" creationComplete="title_creationCompleteHandler(event)"/>
            <s:RichText id="content" text="{data.content}" creationComplete="content_creationCompleteHandler(event)"/>
        </s:VGroup>
 
        <s:Image source="{data.authorImage}" width="50" height="50"/>
    </s:Group>
</s:ItemRenderer>

这段代码使用了Flex的ItemRenderer来定义博文列表中每个博文的布局。它使用了<s:layout>标签来指定容器内部组件的布局方式，并通过creationComplete事件在运行时动态设置了标题和内容的样式。这样的实现方式使得布局和样式的定义更加灵活和高效。