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FLEX ERROR

Child elements specifying default property value must be contiguous

分析:FlashBuilder4的MXML文件上,不能把<fx:Script>...</fx:Script>标签放在其它标签中间,如:
    <s:Button label="aaa"/>  
    <fx:Script>  
        <![CDATA[ 
            protected function button1_clickHandler(event:MouseEvent):void  
            {  
                txt.text ="的确很有flash的风范啊,难怪给改叫FlashBuilder"; 
            } 
        ]]>  
    </fx:Script> 
    <org:FormPanel id="a1" isClickable="true" isClose="false" layout="vertical" >  
        <s:Button label="HAHA" click="button1_clickHandler(event)"/>  
        <mx:Label id="txt" text="速度好像快了很多啊" x="3" y="26"/>  
    </org:FormPanel>  


 I received this error when an event handler I created did not contain an expected parameter. Somehow the compiler missed it but an error was thrown in the browser. The fix was easy. I forgot to add in the event object. Adding that in fixed the problem.

          import flash.events.MouseEvent;
        directorySearch_txt.addEventListener(FocusEvent.FOCUS_OUT,directoryFocusOut); 
          // this line generated no errors in flex but generated errors at run time 
          public function directoryFocusOut():void { 
               // do something    
          } 
          // adding the event object cleared the error 
          public function directoryFocusOut( event:FocusEvent):void {                 // do something               }  

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