External SWF slow on iOS device.

Hi! I would like some advice for loading external SWF on iOS devices because it is very slow, and also sometime when I load external SWF there is always message 'Uncompiled ActionScript' showing. Please tell me how to avoid this msg.

This is not Adobe Air limitations. This also affect on any software. Android don't have such issues.
In your case - you can use external assest but only if you link external files as I said above. Adobe Air during compilation will rip source code from SWF and embed it to the app. Your server files can be used for app. Read this more details http://blogs.adobe.com/airodynamics/2013/03/08/external-hosting-of-secondary-swfs-for-air- apps-on-ios

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Hi JBelcher!
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What is or isn't possible on iOS? (Not having Loader, loadBytes(), external swfs, etc)

My basic question is: "What are the classes which we should not use for iOS using the packager."
I have been trying for a few days trying to get a simple Flash app to run on the iPad. A very simple app (with sound!) with just 2 classes works fine (Performance is a whole other issue. We will get to that). But if I try anything else, all I get is a white/black screen on the iPad. So it would be really nice to know what classes, functions, etc we CANNOT use for the Packager.
I have fairly simple app (not as simple as 2 classes) which loads some art assets via URLRequest/Loader, puts them on the stage. Fairly common standard practice in AS3.
I've read about not able to load an external file using the Packager. So to fix the situation of loading assets, I have looked into the [embed] tag, which seems to work. I hope the blogger doesn't mind, but this page is an excellent source on what works and doesn't work with the [embed] tag in it's various flavors: http://www.richardleggett.co.uk/blog/index.php/2010/03/08/flash_builder_and_flash_pro_asse t_workflows. For example, AS3 in a swf is stripped out from an external swf using [embed].
The best way to load an external swf file for iOS seems to be using [embed] with "application/octet-stream" and load the swf through ByteArray (Option #4 in the link above). This works great on the PC. HOWEVER, on iPad, it fails. The [embed] tag works on the iPad with the other ways, so my guess is that loadBytes() does not work. Is this true Adobe/Flash guys? Can you confirm this?
My initial question is "why is this not allowed on iOS?". If it is because of the fact that it uses a Loader, can it be changed so it's not using a Loader to construct a MovieClip? I have a ByteArray with the raw swf/MovieClip data. Why can't I construct a MovieClip from it without going through Loader?
This loadBytes() failure seems to be the only thing preventing me from using the normal pipeline of Flash development in loading external assets. If there are other ways people have found, please share!
Now on to performance. Adobe, can you post some examples/samples of code which runs at decent performance? Like a "tech demo" of what is possible using the Packager running on iPad/iPhone. That would be extremely helpful for everyone. I have done a lot of the optimizing suggestions on various sites and pages ( and by Adobe http://www.adobe.com/devnet/flash/articles/optimize_content_ios.html), but I am not seeing the 30 fps performance that is MORE than possible on iPhone/iPad. Displaying and moving around Bitmaps (I don't use any vector graphics) should be blazing fast. Quake runs on iPad without any problems and that code is 10 years old. Moore's law dictates that drawing Bitmaps using CPU should be faster than a 3D engine written 10 years ago... I am trying out the new iOS 4.2 which is supposed to be "significantly" better, but I am still stuck on loadBytes().
So at this point, I am blocked on loadBytes() and my performance for a simple app which draws a few Bitmaps and MovieClips is terrible. I am hopeful some people out there have figured out some solution (there are lots of clever people out there) and I will stumble on to something. But being forced to go native Objective-C seems to be my only option at this point.
In summary, here are the questions I would like to ask the Adobe/Flash group for some more help/information/advise:
- Why is Loader not allowed on iOS? Is it a technical limitation of the hardware/os/Flash? Will it never be supported? What is the future of this class on iOS?
- Why is loadBytes() not allowed on iOS? I have the raw embedded data in memory. I don't need to make a remote call so security should not be an issue. Can I create a MovieClip without using Loader?
- Why is AS3 stripped from the timeline when a Symbol is retrieved using [embed]? Maybe this is the same reason loadBytes() fails, but if I could use [embed] and get a copy of the Symbol, that is what I need. (There are issues with the mx.core.MovieClipLoaderAsset/Asset, but it is better than being blocked by loadBytes())
- What are some apps you guys have written that we can use to compare PC vs iOS? Again, a "tech demo" or sample code of what you as experts in Packager for iOS have done which runs at decent framerate (30+fps) would be of tremendous help. If the Adobe/Flash group hasn't gotten the current Packager for iOS to handle more than 50+ 2D Bitmaps on screen running at 30+fps, that would be good to know. Please let us know what the experts and owners of your software are capable of getting the most throughput using the Packager. I'd hate to sound a bit fed up/angry, but I think you are wasting a lot of people's time and energy with a piece of software that, to me, seems like it was a bit early to release. Flash can do some great things. If it can do it on iOS, even better. But PROVE it to us that it's possible, before having your customers run into barriers imposed on us by trial and error.
Thanks.

I have hardly ever seen a post here from someone at Adobe, so you may need to be patient.
Read this article, and get its associated demo files, to see some good performing tech demos:
http://www.adobe.com/devnet/flash/articles/optimize_content_ios.html
Back to your main point, loaders are working, what isn't working for you is accessing of things in the library of a successfully loaded swf, that have been set to Export for ActionScript. That means that the swf you have loaded has an ActionScript Class, to represent the library symbol. iOS Flash apps are native ARM code, and don't include the virtual machines that a browser plugin has, and so it's not able to interpret ActionScript. That may be why it would fail.
Now, I can think of at least a couple of reasons why you might want to have external swfs with elements that you want to reuse in the main swf. One would be if you're intending to make a lot of them, like say if you wanted to have an Asteroids game and the ability to use artwork from a set of different swfs. Another reason might be if you want to skin your interface, by taking specific elements from the loaded swf and using them in the main swf. That way you could have artists preparing those swfs for you, and you just include them in your package, and load the one you want.
There is a way to do either of those things. The second one can be done by having the item as a named symbol on the stage of the loaded swf. With a to-be-loaded swf named "inner.swf", that has a movieclip on its stage named "mc1", this script in the main swf would load that external swf and use its symbol on the main swf's stage, without having to make the inner swf's symbol use ActionScript:
var req:URLRequest = new URLRequest("inner.swf");
var ldr:Loader = new Loader();
ldr.contentLoaderInfo.addEventListener(Event.COMPLETE,loaded);
ldr.load(req);
function loaded(e:Event) {
var mc:MovieClip = e.target.content as MovieClip;
var innermc:* = mc.mc1;
innermc.x = 50;
innermc.y = 50;
addChild(innermc);
For the other case, you can take the item off the stage of the loaded swf and draw it into a bitmapdata, and then make as many bitmaps from that as you like. Here's the above example, only it adds the original movieclip to the main swf stage, and also creates a bitmap that looks the same:
var req:URLRequest = new URLRequest("inner.swf");
var ldr:Loader = new Loader();
ldr.contentLoaderInfo.addEventListener(Event.COMPLETE,loaded);
ldr.load(req);
function loaded(e:Event) {
var mc:MovieClip = e.target.content as MovieClip;
var innermc:* = mc.mc1;
innermc.x = 50;
innermc.y = 50;
addChild(innermc);
var bmd:BitmapData = new BitmapData(innermc.width,innermc.height);
bmd.draw(innermc);
var bm:Bitmap = new Bitmap(bmd);
bm.x = 150;
bm.y = 150;
addChild(bm);
So, the thing to learn is that a native ARM code application does not have an ActionScript interpreter in it, and if you need to do something that normally requires interpreting ActionScript, find another way to do it.

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im using Air 3.7 to call external swf from server to main swf , but i got this warning after publishing Air for IOS "ActionScript contained in externally loaded SWF files will be ignored on IOS devices" please what i miss i know that the SDK 3.7 support this features all my extrnal swf contain actionscript 3 ??

This warning is thrown by CS6 as CS6 was published when AIR iOS didn't have multiple SWFs support. Please ignore it as the feature will work in your app and SWFs will load on your iOS devices with AIR 3.7.
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Hello
Can android AIR and IOS AIR app download and play external SWF with code inside?
I have created android AIR app(SDK version 4.0) which load external swf with simple movie clip on the scene.
var loader:Loader=new Loader();
loader.contentLoaderInfo.addEventListener(Event.COMPLETE, onLoaded);
loader.load(new URLRequest("2.swf"));
function onLoaded(e:Event):void
addChild(loader);
I have installed this android AIR app on device but i do not see external swf on the scene.
Thanks in advance

So for ios as3 code must be like this one.?
var _urlRequest:URLRequest = new URLRequest("2.swf");
var _loader:Loader = new Loader();
var _lc:LoaderContext = new LoaderContext(false, ApplicationDomain.currentDomain, null);
_loader.load(_urlRequest, _lc);
addChild(_loader);
One more question: How exactly i can add the external swf to the included files?
Can you give link with information or some sample? Also, does it work on Android Air?
If you have sample for ios Air or for Andoid Air i will be very appreciative.
Sorry for my english.

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I want to load an external .swf which is included theme objects of the application. The loader class finishes loading but after this when I try to get objects in the swf I get this error.
Device is iPad v.2 iOS v5.1.
ReferenceError: Error #1065: Variable MenuHome is not defined.
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1- Create a .fla file and one object in it (like below):
2- In Flash Builder 4.6
Load the external swf:
                var swfLoader:Loader = new Loader();
                var url:URLRequest = new URLRequest("themes/DefaultTheme/DefaultTheme.swf");
                var loaderContext:LoaderContext = new LoaderContext(false, ApplicationDomain.currentDomain, null);
                swfLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, completeHandler);
                swfLoader.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR, ioErrorHandler);
                swfLoader.load(url, loaderContext);
        private function completeHandler(event:Event):void
            var evt:LoadThemeSWFEvent = new LoadThemeSWFEvent(LoadThemeSWFEvent.COMPLETE);
            if (AdaptiveHelper.getInstance().platform == PlatformType.DESKTOP)
                evt.swfLoader = SWFLoader(event.currentTarget);
            else
                evt.loader = Loader(event.currentTarget.loader)
            dispatchEvent(evt);
          // load is OK
        private function ioErrorHandler(event:IOErrorEvent):void
After load is complete I tried to get the object from the swf file and use it as a skin class of a button.
cssSelector.setStyle(property, Class(content.loaderInfo.applicationDomain.getDefinition("MainMenu")));
I am stuck here. Any ideas what the problem is?
My Best,
Suat

Hi Suat,
Can you send me a sample application @[email protected] with which I can reproduce your problem and can look into the issue?
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I am working on this site and I am doing a video page. I am
loading video externally by creating an empty movie clip. I then
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My purpose of loading it externally was to make it load
faster. The video is 3 minutes long. The external swf file I
created for the video is 5.2 MB.
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http://www.adobe.com/devnet/flash/articles/video_guide_03.html
http://livedocs.adobe.com/flash/mx2004/main_7_2/wwhelp/wwhimpl/common/html/wwhelp.htm?cont ext=Flash_MX_2004&file=00000338.html
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File -> Import -> Import Video and look a Progressive
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[UnloadSWF] main.swf/[[DYNAMIC]]/45116
[UnloadSWF] main.swf/[[DYNAMIC]]/45117
[UnloadSWF] main.swf/[[DYNAMIC]]/45118
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public static var SomeFontClass:Class;
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public static var SomeFontClass:Class;
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It seems only a DefineFont4 is tagged in the swf, there doesn't seem to be a 'Class' per se to call on.
More importantly, iOS apps cannot load external swfs with code in them, so my understanding is any extra wrapped swf that would contain a custom Class technique would fail the iOS requirement of only having one main SWF with any ActionScript compiled code.
Is there an alternative to the 'Class' technique by grabbing the DefineFont4 tagged resource from the swf and instantiating a proper working Font class from that? One that would still be compatible with the restrictions placed on AIR mobile apps running on iOS?

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Have tried renaming SSID, rebooting router etc but no improvement.
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Load and unload the external swf file using AS3(for window, IOS and android)

For the external swf file loading, I use this code
load2.addEventListener(MouseEvent.MOUSE_DOWN, newvid);
function newvid(event:MouseEvent) {
          trace("you clicked me");
          var loadit = new Loader();
          addChild(loadit);
    var _lc:LoaderContext = new LoaderContext(false, ApplicationDomain.currentDomain, null);
    loadit.load(new URLRequest("scene02.swf"), _lc);
its working great but I don’t know how to unload the loaded swf files (looking: unload one by one and unload all)
in AS2 we have
on (release) {
          loadMovieNum("scene2.swf", 1);
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          unloadMovieNum(3);
but i need in AS3

Now I use this code and this time I got these compiler errors
package {
                import flash.display.SimpleButton;
                import flash.display.MovieClip;
                import flash.events.MouseEvent;
                //import flash.display.URLRequest;
                //import flash.display.Loader;
                import flash.events.Event;
                import flash.system.ApplicationDomain;
                import flash.net.URLRequest;
                import flash.system.LoaderContext;
                                public class load1 extends SimpleButton {
                                                var loadit:Loader;
                                                public function load1() {
                                                                this.addEventListener(MouseEvent.MOUSE_DOWN, loadfile);
                                                private function loadfile(event:MouseEvent):void {
                                                                trace("you clicked me");
                                                                loadit = new Loader();
                                                                this.parent.addChild(loadit);
                                                                var _lc:LoaderContext = new LoaderContext(false, ApplicationDomain.currentDomain, null);
                                                                loadit.load(new URLRequest("s01.swf"), _lc);
                                                private function unloadfile(event:MouseEvent):void {
                                                                loadit.unloadAndStop();

External SWF slow on iOS device.

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