Flex 条形图不起作用

Question

要绘制的 XML 数据：

<?xml version="1.0" encoding="utf-8" ?>
<spearkerslist>
    <speakers langid="afb" countryid="SA" countryalpha3id="SAU">200000</speakers>
    <speakers langid="acw" countryid="SA" countryalpha3id="SAU">6000000</speakers>
    <speakers langid="ars" countryid="SA" countryalpha3id="SAU">8000000</speakers>
    <speakers langid="arb" countryid="SA" countryalpha3id="SAU">206000000</speakers>
</spearkerslist>

我需要将上面的数据绘制到条形图上，我尝试使用下面的代码但不起作用 我需要根据扬声器标签中的值在 y 轴和条形长度上绘制“Langid”。

<mx:Script>
        <![CDATA[
            private var languagelist:XML = new XML(); //Variable where the XML is stored.
        ]]>
</mx:Script>

<mx:Panel>
    <mx:BarChart id="chrtLangugeVsPopulation" dataProvider="{languagelist.speakers}" showAllDataTips="true">
        <mx:verticalAxis>
            <mx:CategoryAxis 
                dataProvider="{languagelist.speakers.@langid}"
                categoryField="Language"
            />
        </mx:verticalAxis>
        <mx:series>
            <mx:BarSeries
                yField="Language"
                xField="Speakers"
                displayName="Speakers"
            />
        </mx:series>
    </mx:BarChart>
</mx:Panel>

Answer 1

您可以尝试使用 E4X 语法：

dataProvider="{languagelist..speakers}"

Answer 2

将 mx:BarChart 更改为下面的内容对我有用：

<mx:BarChart id="chrtLangugeVsPopulation" dataProvider="{languagelist.speakers}" showDataTips="true">
    <mx:verticalAxis>
        <mx:CategoryAxis 
            dataProvider="{languagelist.speakers}"
            categoryField="@langid"
        />
    </mx:verticalAxis>
    <mx:series>
        <mx:BarSeries
            yField="@langid"
            xField=""
            displayName="Speakers"
            click="barseries1_clickHandler(event)"
        />
    </mx:series>
</mx:BarChart>