1、错误描写叙述

属性“dataProvider”有多个初始值设定项。（注意:“dataProvider”是“mx.charts.BarChart”的默认属性）。

2、错误原因

<?

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"

			   width="100%" height="100%"

			   creationComplete="initHandler(event)">

	<s:layout>

		<s:BasicLayout/>

	</s:layout>

	<fx:Script>

		<![CDATA[

			import mx.collections.ArrayCollection;

			import mx.events.FlexEvent;

			[Bindable]

			private var chartArray:ArrayCollection = new ArrayCollection([

				{week:"星期一",snake:"5459",cow:"7845"},

				{week:"星期二",snake:"8956",cow:"7845"},

				{week:"星期三",snake:"3562",cow:"7845"},

				{week:"星期四",snake:"7856",cow:"7845"},

				{week:"星期五",snake:"1245",cow:"7845"},

				{week:"星期六",snake:"9656",cow:"7845"},

				{week:"星期日",snake:"6784",cow:"7845"}

			]);

			protected function initHandler(event:FlexEvent):void

			{

			}

		]]>

	</fx:Script>

	<fx:Declarations>

		<!-- 将非可视元素（比如服务、值对象）放在此处 -->

	</fx:Declarations>

	<mx:VBox width="100%" height="100%" horizontalAlign="center" paddingBottom="10" paddingLeft="10" paddingRight="20"

			 paddingTop="10">

		<mx:BarChart id="barchart" width="100%" height="90%" showDataTips="true" dataProvider="{chartArray}">

			<mx:verticalAxis>

				<mx:CategoryAxis categoryField="week" displayName="星期"/>

			</mx:verticalAxis>

			<mx:series>

				<mx:BarSeries displayName="蛇数量" xField="snake" yField="week"/>

			</mx:series>

			<fx:Array>

			</fx:Array>

		</mx:BarChart>

		<mx:Legend dataProvider="{barchart}"/>

	</mx:VBox>

</s:Application>

3、解决的方法

<?

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"

               width="100%" height="100%"

               creationComplete="initHandler(event)">

    <s:layout>

        <s:BasicLayout/>

    </s:layout>

    <fx:Script>

        <![CDATA[

            import mx.collections.ArrayCollection;

            import mx.events.FlexEvent;  

            [Bindable]

            private var chartArray:ArrayCollection = new ArrayCollection([

                {week:"星期一",snake:"5459",cow:"7845"},

                {week:"星期二",snake:"8956",cow:"7845"},

                {week:"星期三",snake:"3562",cow:"7845"},

                {week:"星期四",snake:"7856",cow:"7845"},

                {week:"星期五",snake:"1245",cow:"7845"},

                {week:"星期六",snake:"9656",cow:"7845"},

                {week:"星期日",snake:"6784",cow:"7845"}

            ]);  

            protected function initHandler(event:FlexEvent):void

            {

                cate.ticksBetweenLabels = false;

            }  

        ]]>

    </fx:Script>

    <fx:Declarations>

        <!-- 将非可视元素（比如服务、值对象）放在此处 -->

    </fx:Declarations>  

    <mx:VBox width="100%" height="100%" horizontalAlign="center" paddingBottom="10" paddingLeft="10" paddingRight="20"

             paddingTop="10">

        <mx:BarChart id="barchart" width="100%" height="90%" showDataTips="true" dataProvider="{chartArray}">

            <mx:verticalAxis>

                <mx:CategoryAxis id="cate" categoryField="week" displayName="星期" />

            </mx:verticalAxis>  

            <mx:series>

                <mx:BarSeries displayName="蛇数量" xField="snake" yField="week"/>

            </mx:series>  

            <mx:secondVerticalAxis>

                <mx:CategoryAxis categoryField="week" displayName="星期"/>

            </mx:secondVerticalAxis>  

            <mx:secondSeries>

                <mx:LineSeries displayName="牛" xField="cow" yField="week"/>

            </mx:secondSeries>  

        </mx:BarChart>

        <mx:Legend dataProvider="{barchart}"/>

    </mx:VBox>  

</s:Application>