Flex combox labelFunction 使用示例

<?xml version="1.0" encoding="utf-8"?>



<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"

				layout="vertical"

				verticalAlign="middle"

				backgroundColor="white">

	

	<mx:Script>

		<![CDATA[

			import mx.utils.StringUtil;

			import mx.controls.Alert;

			

			[Bindable]

			private var arr:Array=[

				{name:"名字11",abbrev:"Al1"},

				{name:"名字12",abbrev:"Al2"},

				{name:"名字13",abbrev:"Al3"},

				{name:"名字14",abbrev:"Al4"},

			];

			

			private function comboBox_labelFunc(item:Object):String {

				return StringUtil.substitute("{0} ({1})", item.@name, item.@abbrev);

			}

			

			private function comboBox_labelFunc_custom(item:Object):String {

				return StringUtil.substitute("{0} ({1})", item.name, item.abbrev);

			}

			

			

			protected function button1_clickHandler(event:MouseEvent):void

			{

				if(this.comboBox2.selectedItem)

					Alert.show(this.comboBox2.selectedItem.name);

				else Alert.show("not selected");

				

				if(this.comboBox.selectedItem)

					Alert.show(this.comboBox.selectedItem.@name);

				else Alert.show("not selected");

				

			}

			

		]]>

	</mx:Script>

	

	<mx:XMLList id="statesXMLList">

		<state abbrev="AL" name="Alabama" />

		<state abbrev="AK" name="Alaska" />

		<state abbrev="AZ" name="Arizona" />

		<state abbrev="AR" name="Arkansas" />

		<state abbrev="CA" name="California" />

		<state abbrev="CO" name="Colorado" />

		<state abbrev="CT" name="Connecticut" />

	</mx:XMLList>

	<mx:ComboBox id="comboBox2"

				 prompt="Please select a aa..."

				 dataProvider="{arr}"

				 labelFunction="comboBox_labelFunc_custom" />

	<mx:Button label="按钮" click="button1_clickHandler(event)"/>

	

	<mx:ComboBox id="comboBox"

				 prompt="Please select a State..."

				 dataProvider="{statesXMLList}"

				 labelFunction="comboBox_labelFunc" />

	

	

	

</mx:Application>