Flex开发中怎么给SWF传递外部提供的参数

2012-08-16

Flex开发中如何给SWF传递外部提供的参数在SWF中嵌入另外一个SWF程序时，有时会碰到如何将外部的业务参数传

Flex开发中如何给SWF传递外部提供的参数

在SWF中嵌入另外一个SWF程序时，有时会碰到如何将外部的业务参数传递给内部的SWF文件，这时候就可以利用flashvars，具体可以将参数配置到对应SWF文件的html文件中，具体配置如下。

1. Test.html中配置参数

.....

<head>
        <title>${title}</title>
        <meta name="google" value="notranslate" />
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
        
        <style type="text/css" media="screen">
            html, body { height:100%; }
            body { margin:0; padding:0; overflow:auto; text-align:center;
                   background-color: ${bgcolor}; }
            object:focus { outline:none; }
            #flashContent { display:none; }
        </style>

        
        

        <script type="text/javascript" src="swfobject.js"></script>
        <script type="text/javascript">
            // For version detection, set to min. required Flash Player version, or 0 (or 0.0.0), for no version detection.
            var swfVersionStr = "${version_major}.${version_minor}.${version_revision}";
            // To use express install, set to playerProductInstall.swf, otherwise the empty string.
            var xiSwfUrlStr = "${expressInstallSwf}";
            var flashvars = {};
            //****** begin 在此处配置访问后台服务地址 *********
            flashvars.url=http://127.0.0.1:8080;
           flashvars.contextRoot="test";
            //****** end 在此处配置访问后台服务地址 *********
            var params = {};
            params.quality = "high";
            params.bgcolor = "${bgcolor}";
            params.allowscriptaccess = "sameDomain";
            params.allowfullscreen = "true";
            var attributes = {};
            attributes.id = "${application}";
            attributes.name = "${application}";
            attributes.align = "middle";
            swfobject.embedSWF(
                "${swf}.swf", "flashContent",
                "${width}", "${height}",
                swfVersionStr, xiSwfUrlStr,
                flashvars, params, attributes);
            // JavaScript enabled so display the flashContent div in case it is not replaced with a swf object.
            swfobject.createCSS("#flashContent", "display:block;text-align:left;");
        </script>
    </head>

.....

2.Test.mxml中获取外部配置的参数

<s:AbstractApplication xmlns:fx="http://ns.adobe.com/mxml/2009"
   xmlns:s="library://ns.adobe.com/flex/spark"
   xmlns:fc="http://ns.adobe.com/flashcatalyst/2009" width="100%" height="100%"
   xmlns:mx="library://ns.adobe.com/flex/mx"
   xmlns:controls="com.sgcc.sgtms.ilog.ui.controls.*"
    creationComplete="init()">

<fx:Script>
<![CDATA[

private function init():void

{

//Flex4以上采用FlexGlobals.topLevelApplication获取.html中的参数, Flex3采用Application.application

var urlValue:String = FlexGlobals.topLevelApplication.parameters.url;
var contextRootValue:String = FlexGlobals.topLevelApplication.parameters.contextRoot;

//提供后去访问该SWF文件的路径

var swfURL:String = this.loaderInfo.url;

............

}

]]>
</fx:Script>

............

</s:AbstractApplication >

其它代码省略。只提供思路：该配置步骤只适合单个Application编译生成的SWF使用。

在实际开发环境中，可能还会遇到将Test.SWF文件嵌入其它SWF文件中，那么在以上Test.html中的参数配置就需要转移到对应的父SWF文件的html中。

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