Flex父子窗口相互调用实现思路及源码

1、设计思路

（1）子窗口调用父窗口的方法

（2）子窗口做了修改后，返回父窗口，父窗口调用子窗口函数

2、设计源码

（1）父窗口

ParentWindow.mxml：

复制代码 代码如下:

<?xml version=”1.0″ encoding=”utf-8″?>
<s:Application xmlns:fx=”http://ns.adobe.com/mxml/2009″
xmlns:s=”library://ns.adobe.com/flex/spark”
xmlns:mx=”library://ns.adobe.com/flex/mx”
width=”100%”>
<s:layout>
<s:BasicLayout/>
</s:layout>
<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 mx.collections.ArrayCollection;
import mx.controls.Alert;
import mx.managers.PopUpManager;

[Bindable]
//表格数据源绑定
private var grid:ArrayCollection = new ArrayCollection([
{number:”2014010101″,name:”张散”,sex:”男”,age:”23″},
{number:”2014010102″,name:”李思”,sex:”女”,age:”22″},
{number:”2014010101″,name:”吴王”,sex:”男”,age:”21″},
{number:”2014010101″,name:”赵柳”,sex:”女”,age:”20″},
{number:”2014010101″,name:”游华”,sex:”男”,age:”22″},
{number:”2014010101″,name:”祝思”,sex:”女”,age:”18″},
{number:”2014010101″,name:”周礼”,sex:”男”,age:”19″},
{number:”2014010101″,name:”华捷”,sex:”女”,age:”20″},
{number:”2014010101″,name:”刘亮”,sex:”男”,age:”22″},
{number:”2014010101″,name:”沈雪”,sex:”女”,age:”21″}
]);

/*修改事件函数*/
protected function updateHandler(event:MouseEvent):void
{
//新建子窗体对象
var childWindow:ChildWindow = new ChildWindow();
//将子窗体添加到PopUpManager中
PopUpManager.addPopUp(childWindow,this,true);
//向子窗体传递参数
childWindow.age = “23”;
//子窗口调用父窗口函数
childWindow.callBack = this.myFunction;
//子窗体居中弹出
PopUpManager.centerPopUp(childWindow);
}

/*刷新函数*/
public function myFunction(you:String):void
{
Alert.show(you+”Hello”);
}

]]>
</fx:Script>
<mx:VBox paddingBottom=”10″ paddingLeft=”10″ paddingRight=”10″ paddingTop=”10″>
<mx:DataGrid dataProvider=”{grid}” rowCount=”{grid.length + 1}”
verticalAlign=”middle” textAlign=”center”>
<mx:columns>
<mx:DataGridColumn headerText=”学号” dataField=”number”/>
<mx:DataGridColumn headerText=”姓名” dataField=”name”/>
<mx:DataGridColumn headerText=”性别” dataField=”sex”/>
<mx:DataGridColumn headerText=”年龄” dataField=”age”/>
</mx:columns>
</mx:DataGrid>
<mx:HBox horizontalAlign=”center” verticalAlign=”middle”>
<s:Button label=”修改”/>
</mx:HBox>
</mx:VBox>
</s:Application>

（2）子窗口

ChildWindow.mxml：

复制代码 代码如下:

<?xml version=”1.0″ encoding=”utf-8″?>
<s:TitleWindow xmlns:fx=”http://ns.adobe.com/mxml/2009″
xmlns:s=”library://ns.adobe.com/flex/spark”
xmlns:mx=”library://ns.adobe.com/flex/mx”
close=”closeHandler(event)” title=”修改窗口”>
<s:layout>
<s:BasicLayout/>
</s:layout>
<fx:Script>
<![CDATA[
import mx.events.CloseEvent;
import mx.managers.PopUpManager;

//回调函数
public var callBack:Function;

public var age:String = “”;

/*关闭事件函数*/
protected function closeHandler(event:CloseEvent):void
{
PopUpManager.removePopUp(this);
}

/*修改按钮事件函数*/
protected function updateHandler(event:MouseEvent):void
{
stuAge.text = age;
}

/*取消按钮事件函数*/
protected function cancelHandler(event:MouseEvent):void
{
number.text = “”;
stuName.text = “”;
PopUpManager.removePopUp(this);
if(isPopUp)
{
callBack.call(parent);
}
}
]]>
</fx:Script>
<fx:Declarations>
<!– 将非可视元素（例如服务、值对象）放在此处 –>
</fx:Declarations>

<mx:VBox>
<mx:Form>
<mx:FormItem label=”学号：”>
<s:TextInput maxChars=”10″/>
</mx:FormItem>
<mx:FormItem label=”姓名：”>
<s:TextInput maxChars=”10″/>
</mx:FormItem>
<mx:FormItem label=”性别：”>
<mx:HBox>
<mx:RadioButtonGroup/>
<s:RadioButton groupName=”sex” label=”男” selected=”true”/>
<s:RadioButton groupName=”sex” label=”女”/>
</mx:HBox>
</mx:FormItem>
<mx:FormItem label=”年龄：”>
<s:TextInput maxChars=”2″/>
</mx:FormItem>
<mx:FormItem>
<mx:HBox>
<s:Button label=”修改”/>
<s:Label/>
<s:Button label=”取消”/>
</mx:HBox>
</mx:FormItem>
</mx:Form>
</mx:VBox>
</s:TitleWindow>

3、设计结果

（1）初始化时

 
（2）单击修改按钮