Flex回调函数

应用场景：父子窗体之间的通信，比如想把弹出窗口中的数据传给弹出该窗体的组件。

 

<?xml version="1.0" encoding="utf-8"?>
<s:Group 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="400" height="300">
<fx:Script>
<![CDATA[
private var _callBackFunction:Function;
public function set callBackFunction(value:Function):void
{
_callBackFunction = value;
}
private function onClick(event:MouseEvent):void{
_callBackFunction.call(null,ti.text);
}
]]>
</fx:Script>
<s:VGroup width="100%" height="100%">
<s:TextInput id="ti"/>
<s:Button id="btn" label="Click me" click="onClick(event)" />
</s:VGroup>
</s:Group>

 

 

var myView:MyComponent2 = PopUpManager.createPopUp(this,MyComponent2,false) as MyComponent2;
myView.callBackFunction = callBack;
PopUpManager.centerPopUp(myView);

private function callBack(str:String):void{
trace(str);
}