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POHow to load and run a Flex3 SWF inside Flex4 or vice versa?
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  1. POHow to load and run a Flex3 SWF inside Flex4 or vice versa?
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    copied!<p>I am interested in understanding how to run a Flex-3 SWF inside a Flex-4 SWF.</p> <p>My Flex-4 host app looks like this:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;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" minWidth="955" minHeight="600"&gt; &lt;mx:SWFLoader source="SimpleFlex3App.swf" loadForCompatibility="true"/&gt; &lt;/s:Application&gt; </code></pre> <p>And this is the Flex-3 app:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" width="400" height="400"&gt; &lt;mx:Script&gt; &lt;![CDATA[ private function onClick():void { labelField.visible = true; } ]]&gt; &lt;/mx:Script&gt; &lt;mx:Button label="Click Me" click="onClick();" horizontalCenter="0" verticalCenter="-20"/&gt; &lt;mx:Label text="Clicked" visible="false" id="labelField" horizontalCenter="0" verticalCenter="20"/&gt; &lt;/mx:Application&gt; </code></pre> <p>I get a null object reference where the SWFLoader tries to set up the bridge. I assume it does not get an instance for the IMarshalSystemManager implementation.</p> <pre><code>IMarshalSystemManager(sm.getImplementation("mx.managers::IMarshalSystemManager")).addChildBridge(_swfBridge, this); </code></pre> <p>By using the SWFLoader and setting loadForCompatibility to true I was following the <a href="http://blogs.adobe.com/flexdoc/loadingSubApps.pdf" rel="nofollow noreferrer">adobe documentation</a>:</p> <p>I must be missing out on something very simple as both, my host and hosted apps, basically don't do anything special. </p> <p>Further, is it possible to do the opposite and run a Flex-4 based SWF inside a Flex-3 one? In my opinion the adobe doc does not clearly say yes or no.</p> <p>Thanks.</p>
 

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