Question

I have an existing iPhone app that was working fine in Xcode 4.0 prior to upgrading to Xcode 4.5. Upon upgrading, now I get a Black Screen when running in the iPhone/iPad 4.3 Simulator and get the following Exception when running the iPhone/iPad 6.0 Simulator.

Terminating app due to uncaught exception 'UIViewControllerHierarchyInconsistency', reason: 'A view can only be associated with at most one view controller at a time! View <CCGLView: 0x8c7f380; frame = (0 0; 320 480); layer = <CAEAGLLayer: 0x8c7f670>> is associated with <CCDirectorDisplayLink = 0x994c7f0 | Size: 320 x 480, view = <CCGLView: 0x8c7f380; frame = (0 0; 320 480); layer = <CAEAGLLayer: 0x8c7f670>>>. Clear this association before associating this view with <RootViewController: 0x8c7ef00>.'

The app is using Cocos2D 2.0, and is pretty simple based on a tutorial found online. There is no XIB file. Everything is being done programmatically.

These are the lines that cause the exception in the 6.0 Simulator (from IOS6TestAppDelegate.m):

viewController = [[RootViewController alloc] initWithNibName:nil bundle:nil];
[enter link description here][1]viewController.wantsFullScreenLayout = YES;

If these lines are commented out, then the 6.0 Simulator shows a black screen as well, instead of the regular menu screen.

I’ve searched online for solutions on this and tried a number of things, but have been unable to make progress. I’m fairly new to iPhone programming (though am not new to programming in general) and am really struggling with this. I would really appreciate any help.

Answer 1

First, delete

viewController = [[RootViewController alloc] initWithNibName:nil bundle:nil];
viewController.wantsFullScreenLayout = YES;

Then replace

[window setRootViewController:viewController];

With

if( ! [director enableRetinaDisplay:YES] )
    CCLOG(@"Retina Display Not supported");

// Create a Navigation Controller with the Director
UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:director];
navController.navigationBarHidden = YES;
NSString *reqSysVer = @"6.0";
NSString *currSysVer = [[UIDevice currentDevice] systemVersion];
if ([currSysVer compare:reqSysVer options:NSNumericSearch] != NSOrderedAscending)
{
    [window setRootViewController:navController];
} else
{
    [window addSubview: navController.view];
}

That should do it!