Flex开发中遇到一个问题，就是在弹出的子窗口中怎么将添加的内容即时地显示在父窗口中呢？一般的思路是添加了数据后父窗口再从数据源中读取数据展现出来，可是这麻烦且不说，还增加了服务器的负担。
在网上的一个论坛的帖子里我找到了解决此问题的方法，那就是在父窗口中给子窗口添加一个监视器，当子窗口有变化时将触动此事件，然后再处理此过程。好了，思路就说到这，下面让我们开始这神奇的旅程！
首先是父窗口程序：RefreshData.mxml，代码如下：
<?xml version="1.0" encoding="utf-8"?><s:Application xmlns:fx=""xmlns:s="library://ns.adobe.com/flex/spark"xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600"><fx:Style source="RefreshData.css"/><fx:Declarations><!– 将非可视元素（例如服务、值对象）放在此处 –></fx:Declarations><fx:Script><![CDATA[import event.MyEvent;import mx.collections.ArrayCollection;import mx.controls.Alert;import mx.managers.PopUpManager;//绑定一个数据源[Bindable]var ac:ArrayCollection=new ArrayCollection([{name:"张三",age:18,sex:"男"},{name:"李四",age:20,sex:"女"},{name:"王五",age:22,sex:"男"},{name:"马六",age:20,sex:"男"}]);var child:Child=new Child(); //创建一个子窗口的实例protected function button1_clickHandler(event:MouseEvent):void{// TODO Auto-generated method stubPopUpManager.addPopUp(child,this,true); //添加子窗口PopUpManager.centerPopUp(child); //让添加的子窗口居中显示child.addEventListener(MyEvent.SAVE_OK,saveSuccess); //最为重要的一步，给子窗口添加一个监听器child.name2.text=""; //确保每一次添加子窗口时“姓名”文本域为空，下面雷同child.age.text="";child.sex.text="";}//监听器的函数function saveSuccess(e:MyEvent):void{ac.addItem(e.data); //从监听程序中取得数据并添加到表格中Alert.show("保存成功！","提示",Alert.OK);}]]></fx:Script><mx:AdvancedDataGrid id="adg1" x="183" y="92" width="442" designViewDataType="flat" dataProvider="{ac}"><mx:columns><mx:AdvancedDataGridColumn dataField="name" headerText="姓名"/><mx:AdvancedDataGridColumn dataField="age" headerText="年龄"/><mx:AdvancedDataGridColumn dataField="sex" headerText="性别"/></mx:columns></mx:AdvancedDataGrid><s:Button x="358" y="336" width="152" height="30" label="再添加一个" click="button1_clickHandler(event)"/></s:Application>
其中子窗口组件：Child.mxml,代码如下：
<?xml version="1.0" encoding="utf-8"?><s:Group xmlns:fx="" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" width="400" height="300" fontSize="18"><fx:Script><![CDATA[import event.MyEvent;import mx.events.CloseEvent;import mx.managers.PopUpManager;protected function add_clickHandler(event:MouseEvent):void{// TODO Auto-generated method stubvar obj:Object=new Object();obj.name=name2.text;obj.age=age.text;obj.sex=sex.text;this.dispatchEvent(new MyEvent(MyEvent.SAVE_OK,obj));PopUpManager.removePopUp(this);}//下面是关闭窗口的执行事件protected function addUser_closeHandler(event:CloseEvent):void{// TODO Auto-generated method stubthis.addUser.visible=false;PopUpManager.removePopUp(this);}]]></fx:Script><fx:Declarations><!– 将非可视元素（例如服务、值对象）放在此处 –></fx:Declarations><s:TitleWindow id="addUser" width="401" height="300" close="addUser_closeHandler(event)" title="添加用户" ><s:Label x="147" y="9" width="119" height="34" fontSize="25" fontWeight="bold" text="用户添加"verticalAlign="middle"/><s:TextInput id="name2" x="99" y="60"/><s:Label x="25" y="61" height="27" text="姓名：" verticalAlign="middle"/><s:Label x="25" y="112" text="年龄："/><s:TextInput id="age" x="99" y="112"/><s:TextInput id="sex" x="99" y="160"/><s:Label x="28" y="169" text="性别："/><s:Button id="add" x="172" y="219" height="33" label="添加" click="add_clickHandler(event)"/></s:TitleWindow></s:Group>
一个ActionScript文件：MyEvent.as
package event{import flash.events.Event;public class MyEvent extends Event{public static const SAVE_OK:String="saveOk";private var _data:Object;public function MyEvent(type:String, data:Object=null, bubbles:Boolean=false, cancelable:Boolean=false){this._data=data;super(type, bubbles, cancelable);}public function get data():Object{ return _data;}public function set data(value:Object):void{_data=value;}}}学习会使你永远立于不败之地。
