Orientation and rotation issues when Building Unity App to iOS 6 beta 4

We have created a Unity iOS app we hope to release this fall.

My app has been building fine to iOS 5.1 devices and the application launches into landscape view without error and then pulls up the main window (also in landscape ... as it should). I also enabled orientation changes for both version of landscape, which work great on 5.1 as well. Testing on iPad 3rd gen.

We plan on publishing for iOS 6 and so are currently testing on the latest beta 4, but when I test, I am encountered some unusual behaviour. These issues only show up when building for iOS 6 on a device with iOS 6. My gut says maybe something may have changed in the build pipeline from Unity to Xcode.

Essentially the start screen comes up in landscape as it should, but unlike the builds for 5.1, the iOS 6 build displays the the main window in Portrait and screen all rotations are lost.

I get an error in the console that says:

Application windows are expected to have a root view controller at the end of application launch

This only happens when publishing for iOS 6 on a device with iOS 6. Has anyone else encountered anything like this who is currently testing a Unity App destined for iOS6.

Perhaps this may be resolved in the next Unity Update that will follow with the release of iOS 6, but if anyone has any advice that could resolve the issue, I'd be happy to hear it.

 

Unity generally doesn't support the pre-release versions of iOS6, and the NDA limits what you can talk about (not that that stops the rest of the internet). I do know orientation stuff has undergone changes though.

For situations like this it would be nice if Unity could build to the simulator.

 

@cool, Unity can build to the simulator:

 

How long has that been there?!

 

Unity autorotation is a mess in iOS 6. I was able to fix the "Application windows are expected to have a root view controller at the end of application launch" error by setting the UnityViewController as the window's rootViewController during the engine init in AppController.mm. Unfortunately, that was not enough to fix the autorotation issue.

Rather than continuing to mess with it, my temporary solution during development is to support a single orientation rather than autorotation. The splash screen is still messed up during load, but the game ends up in the proper orientation and aspect ratio once it's loaded. Select Landscape Left or Landscape Right for the Default Orientation setting in the iOS player settings and you should be good to go.

 

The issue is that, if you don't support auto-rotation between left and right, you run the risk of being rejected by Apple.

 

Yes, you should be rejected for not supporting both landscape orientations. I only used that workaround so I could continue developing for iOS 6. This will be a much bigger issue next week.

 

This may be a silly question, but does Unity know about the problem? Was a bug report submitted? I have not upgraded to iOS6 or Xcode 4.5 yet, so I have not experienced it yet.

 

For the folks out there that havent figured this all out yet check out this post for the details of how to fix it.