[转载]Flex 两个窗口之间的参数传递

http://xldbk.iteye.com/blog/441923

经常有人问怎么在flex里面两个窗体里如何传递参数，下面做个简单的参数传递

这个是所谓的"父窗口"代码:

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
<mx:Script>
    <![CDATA[
        import mx.binding.utils.BindingUtils;
        import mx.managers.PopUpManager;
        
        //打开窗口 并将参数传过去
        private function newForm():void{
            var p:title=new title();
            p.text=mytext.text;
            p.callback=closeHandler;
            PopUpManager.addPopUp(p,this);
        }
        
        //关闭打开窗口时处理
        private function closeHandler(text:String):void{
            mytext.text=text;
        }
    ]]>
</mx:Script>
    <mx:TextInput id="mytext" name="mytext" x="87" y="67"/>
    <mx:Button x="295" y="67" label="Button" click="newForm()"/>    
</mx:Application>

下面是所谓的 title.mxml "子窗口"

<?xml version="1.0" encoding="utf-8"?>
<mx:TitleWindow xmlns:mx="http://www.adobe.com/2006/mxml" width="400" height="300" initialize="init()">
    <mx:Script>
        <![CDATA[
            import mx.controls.Alert;
            import mx.controls.TextInput;
            import mx.managers.PopUpManager;
            public var text:String;
            
            public var callback:Function;//定义关闭窗口后调用的函数
                    
            private function init():void{
                mytext.text=text;    
            }
            
            //关闭时传参数给父窗窗口
            private function onclose():void{                
                if(callback!=null){
                    callback(mytext.text);
                }
                PopUpManager.removePopUp(this);
            } 
        ]]>
    </mx:Script>
    <mx:TextInput id="mytext" x="92" y="51"/>
    <mx:Button x="187" y="171" label="Button" click="onclose()"/>
</mx:TitleWindow>