Flex中如何通过监听change事件检测RadioButton或RadioButtonGroup选中项目是否改变的例子
By Minidxer | October 25, 2008
接下来的例子演示了Flex中如何通过监听change事件，检测RadioButton或RadioButtonGroup选中项目是否改变。
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="middle"
- backgroundColor="white">
- <mx:Script>
- <![CDATA[
- private function rb_change(evt:Event):void {
- var rb:RadioButton = evt.currentTarget as RadioButton;
- lbl.text = rb.label;
- }
- ]]>
- </mx:Script>
- <mx:VBox>
- <mx:RadioButton id="rb1"
- label="One"
- change="rb_change(event);" />
- <mx:RadioButton id="rb2"
- label="Two"
- change="rb_change(event);" />
- <mx:RadioButton id="rb3"
- label="Three"
- change="rb_change(event);" />
- </mx:VBox>
- <mx:Label id="lbl" fontWeight="bold" />
- </mx:Application>
代码：Peter deHaan 翻译/整理/编译：中文Flex例子
Topics:
RadioButton, RadioButtonGroup |
No Comments » |
Tags: change, Group, RadioButton, RadioButtonGroup