Flex中如何通过将PopUpMenuButton作为一个XML数据提供源创建一个自定义的labelFunction的label的例子
By Minidxer | April 13, 2009
接下来的例子演示了Flex中如何通过将PopUpMenuButton作为一个XML数据提供源，创建一个自定义的labelFunction的label。
让我们先来看一下Demo（可以右键View Source或点击这里察看源代码）：
下面是完整代码(或点击这里察看)：
Download: main.mxml
- <?xml version="1.0" encoding="utf-8"?>
- <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
- layout="vertical"
- verticalAlign="top"
- backgroundColor="white">
- <mx:Script>
- <![CDATA[
- private function getTeams(dp:XML, leagueAbbrev:String, divisionLabel:String):XMLList {
- return dp.league.(@abbrev == leagueAbbrev).division.(@label == divisionLabel).team;
- }
- private function popUpMenuButton_labelFunc(item:Object):String {
- return item.@label + " " + item.@name;
- }
- ]]>
- </mx:Script>
- <mx:XML id="mlb" source="mlb.xml" />
- <mx:XMLListCollection id="mlbXLC"
- source="{getTeams(mlb, 'NL', 'West')}">
- <mx:sort>
- <mx:Sort>
- <mx:fields>
- <mx:SortField name="@label"
- caseInsensitive="true" />
- </mx:fields>
- </mx:Sort>
- </mx:sort>
- </mx:XMLListCollection>
- <mx:PopUpMenuButton id="popUpMenuButton"
- dataProvider="{mlbXLC}"
- labelFunction="popUpMenuButton_labelFunc" />
- </mx:Application>
代码：Peter deHaan 翻译/整理/编译：中文Flex例子
Topics:
Label |
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Tags: dataProvider, labelFunction, PopUpMenuButton, SortField