您好我是Adobe Flex的新手，如果我的问题听起来很愚蠢，请道歉。无论如何这里是。 我正在尝试简单的数据网格，它基本上检查了两个条件 1）如果艺术家为01且专辑为“专辑01”，则在“年份”列中将相应单元格设置为背景。
使用我的下面的代码'将Style'设置为Background Color，因为属性不起作用但改变字体颜色正在工作，其次我不知道如何编写代码以使上述嵌套条件有效？如果有人能在这方面帮助我，我将非常感激。 谢谢！提前。
以下是代码： Newdatagrid.mxml
<?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" minWidth="955" minHeight="600" >
<fx:Script>
<![CDATA[
import mx.collections.ArrayCollection;
import mx.controls.Alert;
[Bindable]
public static var initDG:ArrayCollection = new ArrayCollection([
{Artist:'01', Album:'Album 01', Year:'2008'},
{Artist:'01', Album:'Album 02', Year:'2009'},
{Artist:'03', Album:'Album 03', Year:'2007'},
{Artist:'03', Album:'Album 04', Year:'2003'},
]);
]]>
</fx:Script>
<s:VGroup>
<s:DataGrid id="myGrid" width="360" dataProvider="{initDG}">
<s:columns>
<s:ArrayList>
<s:GridColumn dataField="Artist" headerText="Artist" itemRenderer="CellRenderer"/>
<s:GridColumn dataField="Album" headerText="Album" itemRenderer="CellRenderer"/>
<s:GridColumn dataField="Year" headerText="Year" itemRenderer="CellRenderer"/>
</s:ArrayList>
</s:columns>
</s:DataGrid>
</s:VGroup>
</s:Application>
渲染器：
<?xml version="1.0" encoding="utf-8"?>
<s:GridItemRenderer xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx"
implements="mx.controls.listClasses.IDropInListItemRenderer">
<fx:Script>
<![CDATA[
import mx.controls.dataGridClasses.DataGridListData;
import mx.controls.listClasses.BaseListData;
import mx.controls.Alert;
private var _listData:BaseListData;
[Bindable]private var isSelected:Boolean = false;
override public function set data( value:Object ) : void
{
super.data = value;
lblData.text = data[column.dataField];
if (data[column.dataField].valueOf() >= 2008){
//styleName="myStyles.BgColor";
setStyle('backgroundColor',0xFFFF00);
}else{
setStyle('backgroundColor',0x32CD32);
}
}
[Bindable]public function get listData() : BaseListData
{
return _listData;
}
public function set listData( value:BaseListData ) : void
{
_listData = value;
}
]]>
</fx:Script>
<s:Label id="lblData" top="9" left="7" width="100%" height="100%" textAlign="center"/>
</s:GridItemRenderer>
我想要的输出：条件：如果Artist = 01且Year＆gt; = 2008，那么单元格背景将变为红色
答案 0 :(得分：7)
GridItemRenderer类没有这样的样式backgroundColor。 所以设置它没有任何效果。
您可以做的是将一个Rect添加到ItemRenderer并根据您的条件设置其颜色属性。
一个例子就是：
<?xml version="1.0" encoding="utf-8"?>
<s:GridItemRenderer xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx" clipAndEnableScrolling="true">
<fx:Script>
<![CDATA[
override public function prepare(hasBeenRecycled:Boolean):void {
if(this.data) {
if(this.data.Year >= 2008 && this.data.Artist == '01' && column.dataField == 'Year')
bgColor.color = 0xFF0000;
else
bgColor.color = 0xFFFFFF;
}
}
]]>
</fx:Script>
<s:Rect top="0" bottom="0" left="0" right="0">
<s:fill>
<s:SolidColor id="bgColor" color="0xFFFFFF"/>
</s:fill>
</s:Rect>
<s:Label id="labelDisplay" top="9" left="7"/>
</s:GridItemRenderer>
答案 1 :(得分：1)
<?xml version="1.0" encoding="utf-8"?>
<s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600" >
<fx:Script>
<![CDATA[
import mx.collections.ArrayCollection;
import mx.controls.Alert;
[Bindable]
public static var initDG:ArrayCollection = new ArrayCollection([
{Artist:'01', Album:'Album 01', Year:'2008'},
{Artist:'01', Album:'Album 02', Year:'2009'},
{Artist:'03', Album:'Album 03', Year:'2007'},
{Artist:'03', Album:'Album 04', Year:'2003'},
]);
]]>
</fx:Script>
<s:VGroup>
<s:DataGrid id="myGrid" width="360" dataProvider="{initDG}">
<s:columns>
<s:ArrayList>
<s:GridColumn dataField="Artist" headerText="Artist"/>
<s:GridColumn dataField="Album" headerText="Album"/>
<s:GridColumn dataField="Year" headerText="Year" itemRenderer="CellRenderer"/>
</s:ArrayList>
</s:columns>
</s:DataGrid>
</s:VGroup>
</s:WindowedApplication>
----------------------------CellRenderer.mxml------------------------
<?xml version="1.0" encoding="utf-8"?>
<s:GridItemRenderer xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx" clipAndEnableScrolling="true">
<fx:Script>
<![CDATA[
override public function prepare(hasBeenRecycled:Boolean):void {
lblData.text = data[column.dataField]
if(this.data) {
lblData.text = data[column.dataField];
if(this.data.Year >= 2008&&this.data.Artist==01)
bgColor.color = 0xFF0000;
else
bgColor.color = 0xFFFFFF;
}
}
]]>
</fx:Script>
<s:Rect top="0" bottom="0" left="0" right="0">
<s:fill>
<s:SolidColor id="bgColor" color="0xFFFFFF"/>
</s:fill>
</s:Rect>
<s:Label id="lblData" top="9" left="7" width="100%" height="100%" textAlign="center"/>
</s:GridItemRenderer>