我想按字母顺序对这些关联进行分类。标签函数在列获得值的位置下方。
private function setColumnLabel(item:Object, col:*):String
{
if(AssociationModel(item).service != null)
return
AssociationModel(item).service.serviceName
+"["+AssociationMoel(item).service.siServiceId+"]";
else
return "";
}
<mx:DataGrid id="subLinearAssocGridInView"
width="600"
top="30"
left="12"
editable="false"
maxHeight="500"
rowHeight="20"
headerHeight="20">
<mx:columns>
<mx:DataGridColumn [Si_Service_Id]"
headerText="Service
editable="false"
dataField="service"
labelFunction="setColumnLabel"
sortable="true"/>
</mx:columns>
</mx:DataGrid>
在这里,我尝试使用sortabledecsending = true and sortabledecsending = true,但没有效果
<mx:DataGridColumn
headerText="Service [Si_Service_Id]"
editable="false"
dataField="service"
labelFunction="setServiceColumnLabel"
sortabledecsending=true
sortable="true"/>
我也尝试使用sortCompareFunction。
public function doSortForField(field:String):Function
{
return function(obj1:Object, obj2:Object):int
{
return mx.utils.ObjectUtil.stringCompare(obj1[field],obj2[field],true);
}
<mx:DataGrid>
<mx:columns>
<mx:DataGridColumn
sortCompareFunction=”doSortForField(‘service’)”
headerText=”service” dataField=”service” />
</mx:columns>
</mx:DataGrid>
,但这也没有影响。请建议我在哪里失踪。提前致谢。
您几乎是对的,只是您错过的一件事:
public function doSortForField(field:String, property:String):Function
{
return function (obj1:Object, obj2:Object):int
{
return mx.utils.ObjectUtil.stringCompare(obj1[field][property], obj2[field][property], true);
}
}
,但默认情况下仍不会对其进行排序 - 您必须单击列标题来对其进行DEC/ACC进行排序。请参阅下面的结果代码:
<?xml version="1.0"?>
<mx:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:mx="library://ns.adobe.com/flex/mx"
creationComplete="creationCompleteHandler(event)">
<mx:DataGrid id="subLinearAssocGridInView"
width="600"
top="30"
left="12"
editable="false"
maxHeight="500"
rowHeight="20"
headerHeight="20"
sortableColumns="true"
>
<mx:columns>
<mx:DataGridColumn
headerText="Service"
editable="false"
dataField="service"
labelFunction="setColumnLabel"
sortCompareFunction="doSortForField('service', 'serviceName')"
/>
</mx:columns>
</mx:DataGrid>
<fx:Script><![CDATA[
import mx.collections.ArrayCollection;
import mx.events.FlexEvent;
import mx.utils.ObjectUtil;
private function creationCompleteHandler(event:FlexEvent):void
{
const mockData:ArrayCollection = new ArrayCollection([
{service: {serviceName: "service1", siServiceId: "serviceId1"}},
{service: {serviceName: "service2", siServiceId: "serviceId2"}},
{service: {serviceName: "service3", siServiceId: "serviceId3"}},
{service: {serviceName: "service4", siServiceId: "serviceId4"}}
]);
subLinearAssocGridInView.dataProvider = mockData;
}
private function setColumnLabel(item:Object, col:*):String
{
if (item.service != null)
{
return item.service.serviceName + "[" + item.service.siServiceId + "]";
}
else
{
return "";
}
}
public function doSortForField(field:String, property:String):Function
{
return function (obj1:Object, obj2:Object):int
{
return mx.utils.ObjectUtil.stringCompare(obj1[field][property], obj2[field][property], true);
}
}
]]></fx:Script>
如果要应用默认排序:
private function subLinearAssocGridInView_creationCompleteHandler(event:FlexEvent):void
{
mockData.sort = new Sort();
mockData.sort.fields = [
new SortField('serviceName', true, true, false, null, doSortForField('service', 'serviceName'))
];
mockData.refresh();
}
因此,结果代码将是:
<?xml version="1.0"?>
<mx:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:mx="library://ns.adobe.com/flex/mx">
<mx:DataGrid id="subLinearAssocGridInView"
dataProvider="{mockData}"
width="600"
top="30"
left="12"
editable="false"
maxHeight="500"
rowHeight="20"
headerHeight="20"
creationComplete="subLinearAssocGridInView_creationCompleteHandler(event)"
>
<mx:columns>
<mx:DataGridColumn
headerText="Service"
editable="false"
labelFunction="setColumnLabel"
sortCompareFunction="doSortForField()"
/>
</mx:columns>
</mx:DataGrid>
<fx:Script><![CDATA[
import mx.collections.ArrayCollection;
import mx.collections.Sort;
import mx.collections.SortField;
import mx.events.FlexEvent;
import mx.utils.ObjectUtil;
private static const SERVICE_FIELD:String = 'service';
private static const SERVICE_NAME_PROPERTY:String = 'serviceName';
[Bindable]
public var mockData:ArrayCollection = new ArrayCollection([
{service: {serviceName: "service1", siServiceId: "serviceId1"}},
{service: {serviceName: "service2", siServiceId: "serviceId2"}},
{service: {serviceName: "service3", siServiceId: "serviceId3"}},
{service: {serviceName: "service4", siServiceId: "serviceId4"}}
]);
private function setColumnLabel(item:Object, col:*):String
{
if (item.service != null)
{
return item.service.serviceName + "[" + item.service.siServiceId + "]";
}
else
{
return "";
}
}
public function doSortForField(field:String = SERVICE_FIELD, property:String = SERVICE_NAME_PROPERTY):Function
{
return function (obj1:Object, obj2:Object):int
{
return mx.utils.ObjectUtil.stringCompare(obj1[field][property], obj2[field][property], true);
}
}
private function subLinearAssocGridInView_creationCompleteHandler(event:FlexEvent):void
{
mockData.sort = new Sort();
mockData.sort.fields = [
new SortField(SERVICE_NAME_PROPERTY, true, true, false, null, doSortForField())
];
mockData.refresh();
}
]]></fx:Script>
您是否尝试过对dataProvider
内容进行排序?如果使用数组,则使用array.sort()。如果您使用的是ArrayCollection,请使用其排序字段