RE: [flexcoders] ADOBE AIR Qs: How do you load modules from "app-storage" domain?

[Battershall, Jeff]

There is a way to do this and I've seen write ups on it.  Search around and 
you'll find it.  It would be nice if AIR supported this out of the box but 
there are security concerns when apps are being updated without involving 
someone who has admin rights to the machine.

Jeff

________________________________
From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On Behalf 
Of Alex Harui
Sent: Friday, October 09, 2009 1:13 AM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] ADOBE AIR Qs: How do you load modules from 
"app-storage" domain?




I'm not sure what moduleLoader is.  You should be using IModuleInfo.load().

Then, a UIComponent makes a poor container.  It doesn't know how to measure or 
layout the child so the child might have 0 size.

Alex Harui
Flex SDK Developer
Adobe Systems Inc.<http://www.adobe.com/>
Blog: http://blogs.adobe.com/aharui

From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On Behalf 
Of handitan
Sent: Thursday, October 08, 2009 8:03 PM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] ADOBE AIR Qs: How do you load modules from "app-storage" 
domain?



Hi all,

I am using AIR 1.5 SDK.
I am trying to find a way to build patching mechanism for my AIR app, which 
consists modules, sqlite DBs, and other files, by updating ONLY files that need 
to be updated.

I know that this is not possible using AIR Update Framework because the way I 
understand it works is that any update that you have both minor and major, you 
will have to reinstall everything. This is a pain if you have a huge size AIR 
app.

I have sort of an idea to build my own update mechanism but in order for this 
to work, I will need to be able to do update operation on my AIR app files.

Since "app" domain doesn't allow us to do that, I have to find a place where 
updates can take place and my app could still work. I read that "app-storage" 
allows you to do all of that.

Okay... so I build a really simple AIR app that the sole purpose is to load swf 
module from "app-storage" to prove my theory.

So here's my AIR app code the short version:

<mx:WindowedApplication>
<mx:Script>
private function loadSwf():void
{
var dir:File = File.applicationStorageDirectory
dir = dir.resolvePath("SimpleSwf.swf");//SimpleSwf is the module

var myURLRequest:URLRequest = new URLRequest(dir.url);
var myURLLoader:URLLoader = new URLLoader();
myURLLoader.dataFormat = URLLoaderDataFormat.BINARY;
myURLLoader.load(myURLRequest);
myURLLoader.addEventListener(Event.COMPLETE,loadModuleCompleteHandler);
}

private function loadModuleCompleteHandler(pEvent:Event):void
{
var context:LoaderContext = new LoaderContext();
context.allowLoadBytesCodeExecution = true;
context.applicationDomain = ApplicationDomain.currentDomain;

var moduleLoader:Loader = new Loader();
var loader:URLLoader = URLLoader(pEvent.target);
moduleLoader.loadBytes(loader.data,context);

container.addChild(moduleLoader);
}
</mx:Script>

<mx:VBox width="100%" height="100%">
<mx:Button label="Load SWF" click="loadSwf()"/>
<mx:UIComponent id="container"/>
</mx:VBox>
</mx:WindowedApplication>

The result is:
When I click the button "Load SWF", I could see that the loader loads the SWF 
correctly (it got the right size, etc) but I didn't see the module shows up on 
the screen at all.
I didn't know what I do wrong.

Please enlighten me.