JS 与Flex交互:html中的js 与flex中的actionScript通信

Flex与JavaScript交互的问题，这里和大家分享一下，主要包括Flex调用JavaScript中的函数和JavaScript调用Flex中的函数两大部分内容。

Flex 与JavaScript 交互，主要依靠Flex的ExternalInterface，其提供了addCallBack和call方法。

一.Html页面嵌套Flex

html嵌套Flex需要用到swfobject.js,下载网址http://code.google.com/p/swfobject/

swfobject.embedSWF(swfUrl, id, width, height, version, expressInstallSwfurl, flashvars, params, attributes)为js加载flex的方法。

详细请看：http://blog.csdn.net/allen_oscar/article/details/9744265

如下：

<!DOCTYPE HTML PUBLICd "-//W3C//DTD HTML 4.000%1 Transitional//EN"

"http://www.w3.org/TR/html4/loose.dtd">

<html >

    <head>

        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

        <title>JS与Flex交互</title>    

         <script type="text/javascript" src="lib/interaction.js"></script>

        <script type="text/javascript" src="lib/swfobject.js"></script>

          <script>

            var jsApp;

  	   function init(name){

   

             this.name = name;//name="flexDiv" flexDiv为 html页面中 <div id="flexDiv">/div><  的id

             var flashvars = {};

             var params = {};

             attributes = {};

             params.allowScriptAccess = "always";//安全沙箱

             params.scale = "nocale";  

     swfobject.embedSWF("http://192.168.1.102:8088/FlexApp/FlexApp.swf", name,"100%","100%", "10.2.0", "", flashvars, params, attributes); 

    

		    }

          	</script>

    </head>

   <body  onload="init("flexDiv")"  width="100%" height="100%">

         <div>     <label> Flex说：</label> <input id="flexSay" /> <input  id="jsinput" value="你好Flex" /> <button >Send</button>  </div>

           <table width="100%" height="100%">

		        <td>	<div id="flexDiv" width="100%" height="100%" style="display:block">

	        		               <a href="http://www.adobe.com/go/getflashplayer"><img src="http://www.adobe.com/images/shared/download_buttons/get_flash_player.gif" alt="Get Adobe Flash player" /></a>

				    </div>

				</td>

	        </table>

    </body>  

</html>

二.JavaScript与Flex交互

Flex 与JavaScript 交互，主要依靠Flex的ExternalInterface，其提供了addCallBack和call方法。

ExternalInterface.addCallback("onHello",onHelloFlex);//onHello 为javascript中的方法

ExternalInterface.call("flexCall",flex.text);//调用javascript中的flexCall()方法

ExternalInterface还提供了一些其他的方法：

ExternalInterface.available//对浏览器支持的检查

Security.allowDomain("*"); //允许调用SWF文件中的属性和变量

Security.allowInsecureDomain("*");

三.代码示例

JSApp.html

<!DOCTYPE HTML PUBLICd "-//W3C//DTD HTML 4.000%1 Transitional//EN"

"http://www.w3.org/TR/html4/loose.dtd">

<html >

    <head>

        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

        <title>地图接口</title>    

         <script type="text/javascript" src="lib/interaction.js"></script>

        <script type="text/javascript" src="lib/swfobject.js"></script>

          <script>

          	var jsApp;

  	        function init(){

		          jsApp = new LoadFlex("flexDiv");//创建对象 

		    }

          	function sendJS(){

          	  try{

      		 	     var str =  document.getElementById('jsinput').value;

      		 		 jsApp.jsToFlex(str);

                  } catch(e){

          		  alert(e.message);

          		  }

          	}

          	</script>

    </head>

   <body  onload="init()"  width="100%" height="100%">

         <div>     <label> Flex说：</label> <input id="flexSay" /> <input  id="jsinput" value="你好Flex" /> <button onClick="sendJS()">Send</button>  </div>

           <table width="100%" height="100%">

		        <td>	<div id="flexDiv" width="100%" height="100%" style="display:block">

	        		               <a href="http://www.adobe.com/go/getflashplayer"><img src="http://www.adobe.com/images/shared/download_buttons/get_flash_player.gif" alt="Get Adobe Flash player" /></a>

				    </div>

				</td>

	        </table>

    </body>  

</html>

interaction.js

	 function LoadFlex(name){

		this.name = name;

        var flashvars = {};

	    var params = {};

	    attributes = {};

	    params.allowScriptAccess = "always";

	    params.scale = "nocale";

	 	swfobject.embedSWF("http://192.168.1.102:8088/FlexApp/FlexApp.swf", name,"100%","100%", "10.2.0", "", flashvars, params, attributes);	 

		this.GetFlex = function(){

			var mapName = this.name;

			if (navigator.appName.indexOf("Microsoft") != -1) {

				return window[mapName];

			}else {

		     	return document[mapName];

			}

		}

	    this.jsToFlex  = function(str){

			 try{

			 var str = this.GetFlex().onHello(str); 

			 } catch(e){

			  	alert(e.message);

		  }

		}

      }

      function flexCall(str){

        // alert(str);

      	document.getElementById("flexSay").value =str

      }

FlexApp.mxml

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

<mx: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" minWidth="955" minHeight="600"

			   applicationComplete="init()" creationComplete="oninit()" initialize="oninit()"

              viewSourceURL="srcview/index.html">

	<fx:Script>

		<![CDATA[

			import flash.external.ExternalInterface;

			import flash.system.Security;

			import mx.controls.Alert;

			import mx.events.FlexEvent;

            public function oninit():void{

			}

			public function init():void{

				Security.allowDomain("*"); //允许调用SWF文件中的属性和变量

				Security.allowInsecureDomain("*"); 

				if (ExternalInterface.available)

				{

					try{

						ExternalInterface.addCallback("onHello",onHelloFlex);//onHello 为javascript中的this.GetFlex().onHello(str); 

					}

					catch(error:Error){

						Alert.show(error.message);

					}

				}

			}

	     	public	function onHelloFlex(str:String):String{

				js.text = str;

		        return "你好javaScript";

			}

			public function onFlexToJS(ste:String):void{

				ExternalInterface.call("flexCall",flex.text);//调用javascript中的flexCall()方法

			}

		]]>

	</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 width="100%" height="100%" horizontalAlign="left" verticalAlign="middle" backgroundColor="#EAE3E3">

		<s:Panel width="100%" height="500" chromeColor="#1E1E1E" title="javascript   and   flex 交互" color="#FCF9F9" fontWeight="bold" fontSize="14">

			<mx:VBox height="100%" width="100%">

				<mx:HBox height="100%">

					   <mx:HBox width="270" height="200" paddingTop="10">

						<s:Label color="#080808">javaScript说：</s:Label>   <s:TextInput   id="js" color="#020202"/>

					   </mx:HBox>

					   <mx:HBox width="380" height="200" paddingTop="10">

						   <s:Label color="#060606">Flex说：</s:Label>	<s:TextInput  text="你好javaScript"  id="flex" color="#020202"/>

							<mx:Button click="onFlexToJS('hell')"    label="send"/>

					   </mx:HBox>

				</mx:HBox>

			</mx:VBox>

		</s:Panel>

	</mx:VBox>

</mx:Application>

四：图片示例

1.初始化页面

2.点击html页面Send,通过调用this.GetFlex().onHello(str);方法-----》ExternalInterface.addCallback("onHello",onHelloFlex)---》public function onHelloFlex(str:String):String。

3.点击flex页面Send，public function onFlexToJS(ste:String):void--》ExternalInterface.call("flexCall",flex.text)--》function flexCall(str)。