Flex中如何在点击PieChart图表数据块时获取具体数据内容的例子

By Minidxer | November 26, 2008

接下来的例子演示了Flex中如何在点击PieChart图表数据块时获取具体数据内容。

让我们先来看一下Demo（可以右键View Source或点击这里察看源代码）：

下面是完整代码(或点击这里察看)：

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
layout="vertical"
verticalAlign="middle"
backgroundColor="white">
<mx:Script>
<![CDATA[
import mx.controls.Alert;
import mx.charts.series.items.PieSeriesItem;
import mx.charts.events.ChartItemEvent;
private function pieChart_itemClick(evt:ChartItemEvent):void {
var psi:PieSeriesItem = evt.hitData.chartItem as PieSeriesItem;
Alert.show("data=" + psi.item.@data + "n" + "percentValue=" + psi.percentValue.toFixed(1) + "%", "label=" + psi.item.@label);
}
]]>
</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}"
itemClick="pieChart_itemClick(event);"
showDataTips="true"
height="100%"
width="100%">
<mx:series>
<mx:PieSeries id="pieSeries"
field="@data"
labelPosition="callout">
<mx:stroke>
<mx:Stroke color="black" weight="0" />
</mx:stroke>
<mx:filters>
<mx:Array />
</mx:filters>
</mx:PieSeries>
</mx:series>
</mx:PieChart>
</mx:Application>

代码：Peter deHaan 翻译/整理/编译：中文Flex例子

Topics: Chart | No Comments » | 795 views Tags: itemClick, PieChart, PieSeries, PieSeriesItem

中文Flex例子