Flex中关于button的click事件处理的写法总

转自：百度

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" fontSize="12"
creationComplete="createCompleteHandler(event)">
<mx:Script>
   <![CDATA[
    import flash.events.MouseEvent;
    import mx.controls.Alert;
    import mx.collections.ArrayCollection;
   
    private const NL:String = "\r";
   
    private function submitButtonClickHandler(event:MouseEvent):void
    {
     if(txtname.text=="")
     {
      Alert.show("请输入您的大名！","配合一下不可以么？",4,null,4);
      return;
     }
     //var all:String="你已经点击的按钮";
     //Alert.show(all,"按钮的处理程序",4);
     var all:String="测试清单:"+NL+NL;
     all+="姓名:"+txtname.text+NL;
     all+="心情:"+cmbmood.text+NL;
      Alert.show(all,"",4);
    }
   ]]>
</mx:Script>
<mx:Script>
   <![CDATA[
    import mx.events.FlexEvent;
    import flash.events.MouseEvent;
   
    private function createCompleteHandler(event:FlexEvent):void
    {
     btnfouth.addEventListener(MouseEvent.CLICK,clickHandler);
    }
    private function clickHandler(event:Event):void
    {
     lblword.text="hello word";
    }
   ]]>
</mx:Script>
<mx:Panel title="这是一个panel层" layout="vertical" width="50%" paddingLeft="10"
paddingRight="10" paddingTop="10">
<mx:Form width="100%">
<mx:FormItem label="姓名" width="50%">
   <mx:TextInput id="txtname"/>
</mx:FormItem>
    <mx:FormItem label="选择你现在的心情:" width="50%">
   <mx:ComboBox id="cmbmood" width="100%">
    <mx:Array>
     <mx:Object data="好" label="好"/>
       <mx:Object data="一般" label="一般"/>
     <mx:Object data="差" label="差"/>
      </mx:Array>
   </mx:ComboBox>
</mx:FormItem>
</mx:Form>
<mx:ControlBar horizontalAlign="center">
<mx:Button id="sub" label="submit" click="submitButtonClickHandler(event)"/>
</mx:ControlBar>
</mx:Panel>
<mx:Panel title="应用一个panel" layout="absolute" width="50%" x="400" y="260">
   <mx:Label id="lblword" text="HELLO WORDER" fontSize="24" fontWeight="bold" x="200"/>
   <mx:ControlBar horizontalAlign="center">
    <mx:Button id="btnshow" label="淅沥的小雨不停的下">
     <mx:click>
      <![CDATA[
       import mx.controls.Alert;
       Alert.show("下雨吧~~~","不要停下来",4);
      ]]>
     </mx:click>
    </mx:Button>
    <mx:Button id="btnthd" label="click的第三种写法" click="lblword.text='你好么'"/>
    <mx:Button id="btnfouth" label="click的第四种写法"/>
   </mx:ControlBar>
</mx:Panel>
</mx:Application>

说明:FlexAboutButton.mxml中汇总了button的click事件的写法
第一种click事件触发，调用一个方法[写在Script中的方法]
click="submitButtonClickHandler(event)"
第二种click事件触发，调用的方法写在按钮的内部
<mx:Button id="btnshow" label="淅沥的小雨不停的下">
     <mx:click>
      <![CDATA[
       import mx.controls.Alert;
       Alert.show("下雨吧~~~",4);
      ]]>
     </mx:click>
    </mx:Button>
第三种click事件触发
click="lblword.text='你好么'"
第四种click事件，是在页面加载完成以后触发的事件中注册的方法
1 <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" fontSize="12" creationComplete="createCompleteHandler(event)"> 2 <mx:Script>    <![CDATA[     import mx.events.FlexEvent;     import flash.events.MouseEvent;         private function createCompleteHandler(event:FlexEvent):void     {      btnfouth.addEventListener(MouseEvent.CLICK,clickHandler);     }     private function clickHandler(event:Event):void     {      lblword.text="hello word";     }    ]]> </mx:Script>