iOS Rotating Phone crashes

Question

I support portrait only ATM, I get these error when rotating the device:

[__NSCFData setProperRotation]: unrecognized selector sent to instance 0x2dc890
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFData setProperRotation]: unrecognized selector sent to instance 0x2dc890'

This is in iOS5.1. Initially I just left the default portrait clause in, but changed it to:

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
if (interfaceOrientation == UIInterfaceOrientationPortrait) { // Or whatever orientation it will be presented in.
        return YES;
    }
    return NO;
}

I am using ARC btw.

Hoping that would help stop the crashing. My info.plist has portrait and portrait upside down. There is nothing else I have done thats stock practice except my main view has multiple ViewControllers and its set to:

self.wantsFullScreenLayout=YES;

Any ideas peoples? Thanks in advance.

My project adds the main view from the appdelegate as such:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
mainViewController=[[MainViewController alloc] init];

[self.window addSubview:mainViewController.view];

And I have 2 ViewControllers on that mainViewController and I use a Navigation controller to push several ViewControllers as such:

- (void) loadActionsView {


NSArray* views = [self.navigationController viewControllers];

if ([views containsObject: actionsPanelViewController])
{
    [self.navigationController popToViewController:actionsPanelViewController animated:YES];
} else {

    [self.navigationController pushViewController:actionsPanelViewController animated:YES];
}

[[StateModel stateModel] setCurrentScreenIndex:0];

}

This is the first view that is called btw.

Update 2 with Solution/problem found:

I was using part of SHK the SHKActivityIndicator, that had a notification that was capturing the screen rotation and its selectors where causing the issue:

[[NSNotificationCenter defaultCenter] addObserver:currentIndicator selector:@selector(setProperRotation) name:UIDeviceOrientationDidChangeNotification object:nil];

Answer 1

It sounds like your ViewController is released and another Object receives setProperRotation message. Check if your ViewController is alive.

mainViewController=[[MainViewController alloc] init];
[self.window addSubview:mainViewController.view];

here is the problem. You adding only the view. ARC thinks that you dont need your MainViewController anymore.

• Make MainViewController as a Class variable or

• set window.rootViewController

   self.window.rootViewController = mainViewController; 

Answer 2

The exception shows that you are likely over-releasing an object which is supposed to responds to -setProperRotation . Look for that object and try to understand where you forgot to retain it (for example, track its retains and releases with Object allocation instrument)