PieChart组件，单击击某部分的挤出插入动作.

itemClick事件
perWedgeExplodeRadius属性
示例：

代码：

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2007/11/06/exploding-wedges-in-a-flex-piechart-control/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white">

    <mx:Script>
        <![CDATA[
            import mx.charts.events.ChartItemEvent;

            private function pieChart_itemClick(evt:ChartItemEvent):void {
                var arr:Array = [];
                arr[evt.hitData.chartItem.index] = 0.2;
                pieSeries.perWedgeExplodeRadius = arr;
            }
        ]]>
    </mx:Script>

    <mx:XML id="dp">
        <products>
            <product label="Product 1" data="3" />
            <product label="Product 2" data="1" />
            <product label="Product 3" data="4" />
            <product label="Product 4" data="1" />
            <product label="Product 5" data="5" />
            <product label="Product 6" data="9" />
        </products>
    </mx:XML>

    <mx:PieChart id="pieChart"
            dataProvider="{dp.product}"
            selectionMode="single"
            showDataTips="true"
            itemClick="pieChart_itemClick(event);"
            height="250"
            width="100%">
        <mx:series>
            <mx:PieSeries id="pieSeries" field="@data">
                <mx:stroke>
                    <mx:Stroke color="black" weight="0" />
                </mx:stroke>
                <mx:filters>
                    <mx:Array />
                </mx:filters>
            </mx:PieSeries>
        </mx:series>
    </mx:PieChart>

</mx:Application>