1

Hey all,

Basically I a trying to make our game run on the iPhone, works totally fine on Android, but each time the game runs I see the loading splash and then it crashes. I have been following this thread but their solutions don’t seem to make a difference for me:

http://forum.unity3d.com/threads/black-screen-on-ios-device-beta14.282154/

This crashes on the line:

return [_displayConnection objectForKey:(UIScreen*)key];

In the file DisplayManger.mm, method objectForKeyedSubscript()

If I follow the stack trace for the thread is first gets called by the UnityAppController.mm on the line/method:

[[DisplayManager Instance] updateDisplayListInUnity];

Not going to lie I am completely stumped!

Any ideas or suggestions welcome. Oh I have tried a build with a blank project and just a spinning cube, works totally fine

3

For me, this only became fixed when I edited Classes/Unity/DisplayManager.mm, line 277, to say:

_displayConnection = [[NSMapTable
            mapTableWithKeyOptions:NSPointerFunctionsStrongMemory | NSPointerFunctionsObjectPointerPersonality
            valueOptions:NSPointerFunctionsStrongMemory | NSPointerFunctionsObjectPointerPersonality
        ] retain];

It seems strange that I need to make this change, but others do not. However, this allowed the app to continue running.

2

I “had” the same issue but looks like I solved it!

For me, to be able to build my app for Facebook, I had to disable the arc just like mentioned below:

After that, my problem about build was gone and I was able to load it to my iPhone6. But after play, I had the same issue as you mentioned. When I debugged for _displayConnection object, reference pointer inside of the object was null. (Don’t know Objective-C, just C++ so sorry about syntax!)

What did I do? Well:

First, I set ALL files’ flags with -fno-objc-arc flag as mentioned on the link! Why all? Because it was easier! But as far as I can see, only one file; FBUnityInterface.mm needs to be corrected this way! When I remove compiler flag from rest, my app is working fine right now!!! So set compiler flag for FBUnityInterface.mm and leave rest!

I’m using Unity 5 Personel, Facebook SDK 6.2.1. Target device is iPhone 6 and I set iOS 8.1 on my platform settings for iOS and Unity.

Hope this helps you too!!!

4
5

I had a similar issue. it was crashing on the below line.

- (BOOL)displayAvailable:(UIScreen*)targetScreen;
{
	return self[targetScreen] != nil;
}

It was caused because I disabled Automatic reference counting (ARC) in the Xcode project settings. Re-enabling it fixed the issue. If you don’t want to use ARC in your code add -fno-objc-arc flag to your Objective-C script.