Flex 4 - 過濾器不工作

Question

我正在火花DataGrid中進行過濾。但我無法過濾數據。我正在使用dataprovider作爲XML文件。我的代碼是在這裏

<s:Application 
xmlns:fx="http://ns.adobe.com/mxml/2009"  
xmlns:mx="library://ns.adobe.com/flex/mx"  
xmlns:s="library://ns.adobe.com/flex/spark"> 
<fx:Script> 
    <![CDATA[ 
     import mx.events.FlexEvent; 

     private function xmlListCollectionFilterFun(item : Object) : Boolean 
     { 
      var token : String = employeeName.text.toLowerCase(); 
      var eName : String = employeeXMLList.child("Name"); 
      var col : XMLList=tempXML.Employee.Name; 
      if(eName.toLowerCase().indexOf(token)!= -1) 
      { 
       return true; 
      } 
      return false; 
     } 


     protected function employeeName_changeHandler():void 
     { 
      if(employeeName.text.length == 0) 
      { 
       employeeXMLList.filterFunction = null; 
      } 
      else 
      { 
       employeeXMLList.filterFunction = xmlListCollectionFilterFun; 
      } 
      employeeXMLList.refresh(); 

     } 

    ]]> 
</fx:Script> 


<fx:Declarations> 

    <fx:XML id="tempXML" 
      source="skins/TextXmlFile.xml" /> 

    <s:XMLListCollection id="employeeXMLList" 
         source="{tempXML.Employee}" filterFunction="xmlListCollectionFilterFun" /> 
</fx:Declarations> 

<mx:VBox width="80%"> 

    <s:TextInput id="employeeName" change="employeeName_changeHandler()"/> 
    <s:DataGrid id="dataGrid" dataProvider="{employeeXMLList}" width="100%" > 
     <s:columns> 
      <s:ArrayCollection> 
       <s:GridColumn id="nameCol" dataField="Name" headerText="Name:" /> 
       <s:GridColumn id="idCol" dataField="Id" headerText="ID:"/> 
       <s:GridColumn id="mobileCol" dataField="Mobile" headerText="Mobile:"/> 
       <s:GridColumn id="alterCol" dataField="AlterMobile" headerText="Alternative Number"/> 
      </s:ArrayCollection> 
     </s:columns> 
    </s:DataGrid> 
</mx:VBox> 
</s:Application> 

我的XML文件是：

<?xml version="1.0" encoding="UTF-8"?> 
<CompanyEmployees version="1"> 

<Employee> 
    <Name>John</Name> 
    <Id>Em234</Id> 
    <Mobile>09999999999</Mobile> 
    <AlterMobile>yes</AlterMobile>> 
</Employee> 

<Employee> 
    <Name>Ram</Name> 
    <Id>Em432</Id> 
    <Mobile>8967452354</Mobile> 
    <AlterMobile>yes</AlterMobile> 
</Employee> 

<Employee> 
    <Name>Raj</Name> 
    <Id>Em098</Id> 
    <Mobile>02343235478</Mobile> 
    <AlterMobile>no</AlterMobile> 
</Employee> 

它顯示的任何錯誤。但是我無法找到我的錯誤在哪裏以及哪些方面？如果有人找到它，請親密我。

謝謝

Answer 1

您的過濾功能考慮到整個數據而不是給定的單個項目。因此，它可能會始終返回所有項目，因爲搜索文本是由所有名稱組成的。請嘗試以下代碼：

private function xmlListCollectionFilterFun(item:Object):Boolean { 
    var token:String = employeeName.text.toLowerCase(); 
    var eName:String = item.Name; 
    if(eName.toLowerCase().indexOf(token)!= -1) { 
     return true; 
    } 
    return false; 
}