Flexviewer两个widget间的传值

本例子是通过widgetA的按钮打开widgetB，并把widgetA的某个值传值到widgetB中，代码如下：

widgetA中的代码：

<?xml version="1.0" encoding="utf-8"?>

<viewer:BaseWidget xmlns:fx="http://ns.adobe.com/mxml/2009"
   xmlns:s="library://ns.adobe.com/flex/spark"
   xmlns:mx="library://ns.adobe.com/flex/mx"
   xmlns:viewer="com.esri.viewer.*"
   widgetConfigLoaded="init()">
<fx:Script>
<![CDATA[
import com.esri.viewer.AppEvent;
import com.esri.viewer.BaseWidget;
import com.esri.viewer.IBaseWidget;
import com.esri.viewer.ViewerContainer;

import mx.collections.ArrayCollection;
import mx.controls.Alert;
import mx.events.FlexEvent;

private function init():void
{
}

var i:int=1;
protected function button1_clickHandler(event:MouseEvent):void
{
var msArr:ArrayCollection = new ArrayCollection();  
msArr.addItem("第"+i.toString()+"次传值");  
addSharedData("test", msArr);  
var id:Number = ViewerContainer.getInstance().widgetManager.getWidgetId("widgetB");
var bWidget :IBaseWidget = ViewerContainer.getInstance().widgetManager.getWidget(id, true) as IBaseWidget;//打开widgetB
i++;
}
]]>
</fx:Script>
<viewer:WidgetTemplate id="aa"
   width="300" height="300">
<viewer:layout>
<s:VerticalLayout horizontalAlign="center" verticalAlign="middle"/>
</viewer:layout>
<s:Button label="测试" click="button1_clickHandler(event)"/>

</viewer:WidgetTemplate>
</viewer:BaseWidget>

widgetB中代码：

<?xml version="1.0" encoding="utf-8"?>

<viewer:BaseWidget xmlns:fx="http://ns.adobe.com/mxml/2009"
   xmlns:s="library://ns.adobe.com/flex/spark"
   xmlns:mx="library://ns.adobe.com/flex/mx"
   xmlns:viewer="com.esri.viewer.*"
   initialize="myBaseWidgetInitHandler(event)">
<fx:Script>
<![CDATA[
import com.esri.viewer.AppEvent;
import com.esri.viewer.IBaseWidget;
import com.esri.viewer.ViewerContainer;
import mx.collections.ArrayCollection;

import mx.controls.Alert;
import mx.events.FlexEvent; 
import com.esri.viewer.utils.Hashtable; 

protected function myBaseWidgetInitHandler(event:FlexEvent):void
{
AppEvent.addListener(AppEvent.DATA_SENT, sharedDataUpdatedFrist);//widgetA第一次点击触发
AppEvent.addListener(AppEvent.DATA_PUBLISH, sharedDataUpdatedSecond);//widgetA第二次点击后触发
fetchSharedData();
}

/***widgetA第一次点击触发的事件***/
private function sharedDataUpdatedFrist(event:AppEvent):void  
{
var dataTable:Hashtable = event.data as Hashtable;  
if (dataTable.containsKey("test"))  
{ 
var recAC:ArrayCollection = dataTable.find("test") as ArrayCollection; 
if (recAC[0]){
lbl.text=recAC[0].toString();
} 
} 
} 

/***widgetA第二次点击后触发的事件***/
private function sharedDataUpdatedSecond(event:AppEvent):void  
{ 
var data:Object = event.data; 
if (data.key == "test") 
{ 
var obj:Object = data.collection[0];
var arr:ArrayCollection = new ArrayCollection();  
arr.addItem(obj);
var str:String=arr.getItemAt(0).toString();
this.lbl.text=str;
}
} 
]]>
</fx:Script>
<viewer:WidgetTemplate id="bb"
   width="300" height="300">
<viewer:layout>
<s:VerticalLayout horizontalAlign="center" verticalAlign="middle"/>
</viewer:layout>
<s:Label id="lbl" text="标签"/>
</viewer:WidgetTemplate>
</viewer:BaseWidget>

运行结果：