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

Posted 2020-06-10

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>