During the session there was a request for me to release the slide deck I was using. So, I’ll do that. I’ll also add some very useful links for those of you interested in joining the Apache Flex community.

Apache Flex Links

• Podling Status: http://incubator.apache.org/projects/flex
• Website: http://incubator.apache.org/flex/
• Wiki: https://cwiki.apache.org/confluence/display/FLEX/Apache+Flex+(incubating)+Wiki
• JIRA: https://issues.apache.org/jira/browse/FLEX
• Source (SVN): http://svn.apache.org/repos/asf/incubator/flex/
• Source (GIT): https://github.com/apache/flex
• Voting: http://www.apache.org/foundation/voting.html
• Building Apache Flex
• Using Git with Apache Flex
• Mailing Lists:
• developer – flex-dev@incubator.apache.org
• users – flex-users@incubator.apache.org
• private (PPMC) – flex-private@incubator.apache.org
• commits – flex-commits@incubator.apache.org

Spoon Slides Download URL

The following link will take you to the session recording, slides, resource links, and code samples: http://www.realeyes.com/blog/2011/08/23/introduction-to-the-flash-platform-p2p-api-with-jun-heider/

Enjoy!

• Multiscreen Development: Using a roughly 80/20 code reuse architecture we built an application for Smartphones, Tablets, and TV.
• P2P: We utilized Flash Player P2P technologies to communicate between the various instances of the application running on the devices.
• FMS: We utilized FMS to stream VOD content and bootstrap and keep track of the P2P Nodes.

If you want to learn more about multiscreen development, you should consider coming to Denver’s RMAUG Flash Camp and/or Adobe MAX.  There will be plenty of good sessions on multiscreen development along with the ones I’ll be doing:

• http://camp.rmaug.com/sessions/descriptions
• http://www.iheartair.com/?p=815

If you want to learn more about P2P and FMS, you should consider attending my online talk with the FMSUG this Tuesday 8/23:

Oh, and I’d like to hear from you.  I’ve created a Uservoice forum so that you can suggest concepts, practices, and topics you feel need to be addressed when it comes to Multiscreen projects and developing applications for multiple screens efficiently.

I’ll keep the Uservoice forum open until I present so keep an eye on it and as new ideas are brought up, feel free to vote them up for more likely consideration.

Here’s some links, and see you all at Adobe MAX!

Register for MAX: http://max.adobe.com/?sdid=ISMTQ

The short link to my session: http://bit.ly/nR3Svy

Link to my Uservoice feedback forum: http://coderjun.uservoice.com/forums/16673-adobe-max-2011-multiscreen-project-best-practices

It was a very fun presentation to give and I appreciate all that attended. Here are the slides, code, and resources that we used:

• Slides
• Resources
• OSMFLightTest Project
• VideoAcrossScreens (Library)
• VideoAcrossScreens (Desktop wrapper)
• VideoAcrossScreens (iOS wrapper)
• VideoAcrossScreens (Android wrapper)

One note, if you want to compile and run the VideoAcrossScreens multi-screen sample app you’ll need Flash Builder 4.5 (prerelease). Take the survey and sign up for 4.5.

• Slides
• Resources

I’ll keep an eye out for when the video becomes available.  Also, thanks to all that attended the live version of the presentation.  It was a blast and so was 360|Flex!  Best one in years if you ask me.

Since we’d like this panel to be worthwhile, we’ve decided to open the floor to get a feel for the types of questions the community would like to ask.  So, if you have any ideas for questions or would like to vote on the ones you’d like answered, go over to my UserVoice forum and make your voice heard: https://coderjun.uservoice.com/forums/16673-open-screen-project-views-from-the-trenches-36

Also, I want to take this post as an opportunity to announce our recently confirmed bad-ass panelist, Jeff Tapper of Digital Primates.

This panel is gonna be a blast, and you’re not going to want to miss it, or 360 either.

Please RSVP for the panel if you are interested: http://rmaug.com/

If you haven’t registered for 360|Flex, then do so: http://360flex.eventbrite.com/?ref=ebtn

This error manifested itself when trying to debug on the simulator and also when trying to export a .bar file.

Looking at the error message started me down the path of thinking the path to the icon image was too long, but after much fiddling I didn’t get anywhere.  I also googled and looked through the Playbook developer forum and found nothing.  Finally, I tried something that in a way makes sense…but it was a wild guess on my part.  Luckily it was the solution.

So, if you find yourself in this situation the solution is to make sure the <id> in your AIR app.xml descriptor file is less than 50 characters long. (In my case, less than 48 characters long.)

This was the broken app.xml <id/> that caused the error:

This was the app.xml <id/> that worked:

I don’t recall seeing this 50 char Package-Name constraint in any of the documentation, and I’m sure I should probably file a bug with Blackberry…but right now I’m tired and my main objectives was to help those of you encountering this issue until I get the energy to log this.

Reason 1: A plethora of content for Flash Platform and Flex developers. Not only is it good content, but it’s relevant to the current state of tech. For instance, I’ll be doing a session on building ActionScript applications for the iPad to go with the recent announcement of AIR 2.6. With all the sessions I know of, I can guarantee that if you pay attention while you’re at 360 your head will be exploding with fun, useful, and interesting knowledge by the time you leave. If you don’t believe me, check out the schedule.

Reason 2: Not only is 360|Flex full of outstanding sessions and speakers, but it’s also a perfect place to talk about stuff that interests you with like-minded peers.  I’ll be moderating a birds of a feather session “Open Screen Project: Views from the Trenches” on Tuesday evening through RMAUG.  I’m looking forward to this BOF, and we’ve got an outstanding lineup of speakers waiting to talk to you about Flash Platform development across all devices:

• Jonathan Campos
• Antonio Holguin
• Joseph Labrecque
• Matt Legrand
• Ben Stucki
• Couple other big names that are TBD

Reason 3: It’s not all tech.  Yeah, you will learn.  Yeah, you’ll be overloaded with new knowledge by the time you leave. One of the best things about 360|Flex is John Wilker has kept it from growing so large that you can’t ever find your peeps like some of the other conferences I’ve been to – CES, SXSW, Adobe MAX – and that’s a good thing.  I’ve gone to every 360|Flex in the USA since 360|Flex Seattle in 2007.  I don’t see myself ever wanting to stop going.  There’s so many cool, laid back people to meet – both Wilkers included – and it’s always good to hang with them each time I return to 360|Flex.  Just think of 360|Flex as a yearly family reunion for the Flex community.

So get registered now, before it’s too late (Use this code for 20% off: speakerfriend2011): http://360flex.eventbrite.com/?ref=ebtn

Adobe AIR 1.5 applications started supporting DRM-protected video content with Adobe’s old FMRMS 1.5.  Now, with Flash Player 10.1 and Flash Access 2, DRM-protected video content can be played back in both desktop AIR applications and Flash Player-based web applications.  Although both application types are based on Flash Player and ActionScript, the methods of clearing the local voucher cache is different.

Here are the various methods you can use to reset your local vouchers.

Resetting the Local Voucher Cache in AIR applications (Using the ActionScript API):

The recommended way to reset your voucher cache in AIR applications is through the ActionScript API.  The DRMManager class has a method called resetDRMVouchers().  You can call this method in your application during debugging and comment it out or remove it before the production release.  It’s also something that you could implement in a settings manager or control panel within your application.

One thing to keep in mind with resetDRMVouchers() is that it seems to be per application, at least from my testing.  I’ve submitted a forum post and commented the livedoc if you want to keep an eye on Adobe’s official response:

• Adobe Forum Post
• DRMManager LiveDoc

Resetting the Local Voucher Cache in AIR applications (Manually deleting ELS content):

Sometime you need to test server-side policy file updates and/or don’t have the luxury of modifying the code to add in a resetDRMVouchers() call.  In this case you can clear out the Encrypted Local Store (ELS) directory for your application.  This will remove the cached vouchers and force the app to request new one the next time you try to play the file.

For those that need some info on the Encrypted Local Store or where to find it on their system, here’s a good blog post that discusses ELS along with the location of the ELS directory on Windows and Mac OS: Link

Resetting Local Vouchers in Flash Player applications (Flash Player Settings Manager):

When working with Flash Access 2 and Flash Player versions 10.1 and above, the way to reset locally cached DRM vouchers is to go to the Flash Player Global Settings Manager.

1. Go to the Flash Player Global Settings Manager. Link

2. In the Protected Content Playback Settings panel click Reset License Files (screenshot below)

3. In the Confirmation Dialog click to confirm that you want to reset ALL vouchers for all Flash Player applications. (screenshot below)

Resetting the Local Voucher Caches for Both AIR and Flash Player Globally:

At this time there is no way to clear DRM vouchers for all applications on your system at one time.  You will have to use one of the four methods above on a case-by-case basis.