DataGrid +CheckBox(全选)
<?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:Declarations>
<!-- 将非可视元素（例如服务、值对象）放在此处 -->
</fx:Declarations>
<fx:Script>
<![CDATA[
import mx.collections.ArrayCollection;
import mx.controls.Alert;
[Bindable]
public var selected:Boolean = false;
public var selectedAC = new ArrayCollection();
[Bindable]
public var dataAC = new ArrayCollection([
{dataField1:1},
{dataField1:2}
]);
protected function button1_clickHandler(event:MouseEvent):void
{
for(var i:int =0;i<selectedAC.length;i++){
for(var j:int =0;j<dataAC.length;j++){
if(selectedAC[i]==dataAC[j]){
dataAC.removeAllElements();
dataAC.removeItemAt(j);
//dataAC.removeElementAt(j);
dataAC.refresh();
break;
}
}
}
}
protected function button2_clickHandler(event:MouseEvent):void
{
if(this.selected){
btn2.label = "全选";
this.selected = false;
selectedAC.removeAll();
}else{
btn2.label = "取消";
this.selected = true;
selectedAC.removeAll();
selectedAC.addAll(this.dataAC);
}
}
]]>
</fx:Script>
<s:DataGrid id="dg" x="177" y="136" requestedRowCount="4" dataProvider="{dataAC}" selectionMode="multipleRows">
<s:columns>
<s:ArrayList>
<s:GridColumn dataField="xx" >
<s:itemRenderer >
<fx:Component>
<s:GridItemRenderer >
<fx:Script>
<![CDATA[
import mx.collections.ArrayCollection;
import mx.controls.Alert;
import mx.events.FlexEvent;
import spark.components.DataGrid;
protected function checkbox_changeHandler1(event:Event):void
{
//checkBox.selected = false;
}
override public function set data(value:Object):void {
super.data = value;
checkBox.selected= false;
if(this.parentApplication.selected){
checkBox.selected= true;
}
}
protected function checkbox_changeHandler2(event:Event):void
{
var checkBox:CheckBox = CheckBox(event.target);
var selectedAC :ArrayCollection= ArrayCollection(this.parentApplication.selectedAC)
if(checkBox.selected){
selectedAC.addItem(data);
var dataGrid:DataGrid = DataGrid (this.parentApplication.dg);
for(var i:int =0;i<selectedAC.length;i++){
for(var j:int=0;j<dataGrid.dataProvider.length;j++){
if(dataGrid.dataProvider.getItemAt(j)==selectedAC.getItemAt(i)){
dataGrid.addSelectedIndex(j);
}
}
}
}else{
for(var i:int=0;i<selectedAC.length;i++){
if(data==selectedAC.getItemAt(i)){
var dataGrid:DataGrid =DataGrid (this.parentApplication.dg);
dataGrid.removeSelectedIndex(rowIndex);
selectedAC.removeItemAt(i);
break;
}
}
}
}
]]>
</fx:Script>
<s:HGroup>
<s:Label width="10"/>
<s:CheckBox id="checkBox" selected="{this.parentApplication.selected}" click="checkbox_changeHandler2(event)"/>
<s:Label width="10"/>
</s:HGroup>
</s:GridItemRenderer>
</fx:Component>
</s:itemRenderer>
<s:headerRenderer>
<fx:Component>
<s:GridItemRenderer >
<fx:Script>
<![CDATA[
import mx.controls.Alert;
import mx.collections.ArrayCollection;
override public function set data(value:Object):void {
super.data = value;
this.parentApplication.selected = false;
//checkBox.selected= false;
}
protected function data_changeHandler(event:Event){
selectedAll.selected = false;
}
protected function selectedAll_clickHandler():void
{
var selectedAC :ArrayCollection= ArrayCollection(this.parentApplication.selectedAC)
if(this.parentApplication.selected){
this.parentApplication.selected = false;
selectedAC.removeAll();
}else{
this.parentApplication.selected = true;
selectedAC.removeAll();
selectedAC.addAll(this.parentApplication.dataAC);
}
}
]]>
</fx:Script>
<s:HGroup>
<s:Label paddingTop="5" text="全选 "/>
<s:CheckBox id="selectedAll" click="selectedAll_clickHandler()"/>
<s:Label width="10"/>
</s:HGroup>
</s:GridItemRenderer>
</fx:Component>
</s:headerRenderer>
</s:GridColumn>
<s:GridColumn dataField="dataField1" headerText="列 1"></s:GridColumn>
<s:GridColumn dataField="dataField3" headerText="列 3"></s:GridColumn>
</s:ArrayList>
</s:columns>
<s:typicalItem>
<fx:Object dataField1="示例数据" dataField2="示例数据" dataField3="示例数据"></fx:Object>
</s:typicalItem>
</s:DataGrid>
<s:Button x="232" y="308" label="删除" click="button1_clickHandler(event)"/>
<s:Button x="242" y="364" id="btn2" label="全选" click="button2_clickHandler(event)"/>
</s:Application>
参考：http://www.myexception.cn/flex/292427_2.html