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POEXC_BAD_ACCESS on iPhone (with debugger screenshot)
 

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    <p>I'm developing an iPhone application that show the camera's view with this code:</p> <pre><code>-(void) displayAR { [rootViewController presentModalViewController:[self cameraController] animated:NO]; [displayView setFrame:[[[self cameraController] view] bounds]]; } </code></pre> <p>And hide the camera's view with this code:</p> <pre><code>- (void) hideAR { [[self locationManager] stopUpdatingHeading]; [[self locationManager] stopUpdatingLocation]; [[self accelerometerManager] release]; [rootViewController dismissModalViewControllerAnimated:YES]; } </code></pre> <p>When I call hideAR, I get an EXC_BAD_ACCESS with the following debugger screenshot:</p> <p><a href="http://img408.imageshack.us/img408/4550/capturadepantalla201006u.png" rel="nofollow noreferrer">alt text http://img408.imageshack.us/img408/4550/capturadepantalla201006u.png</a></p> <p>Any advice?</p> <p><strong>UPDATE:</strong><br /></p> <p>I've changed hideAR code with this and I'm getting the same error:</p> <pre><code>- (void) hideAR { [rootViewController dismissModalViewControllerAnimated:YES]; } </code></pre> <p>I've checked rootViewController and it isn't nil.</p> <p>As you can see on debugger's screenshot, the last method called (the first on the stack) is: <code>[UIWindowController transitionViewDidComplete:fromView:toView]</code>.</p> <p>Maybe, there is something accessing camera´s view after it was dismissed.</p> <p><strong>SECOND UPDATE</strong><br /></p> <p>The class containing these methods is:</p> <pre><code>@implementation AugmentedRealityController @synthesize locationManager; @synthesize accelerometerManager; @synthesize displayView; @synthesize centerCoordinate; @synthesize scaleViewsBasedOnDistance; @synthesize rotateViewsBasedOnPerspective; @synthesize maximumScaleDistance; @synthesize minimumScaleFactor; @synthesize maximumRotationAngle; @synthesize centerLocation; @synthesize coordinates = coordinates; @synthesize debugMode; @synthesize currentOrientation; @synthesize degreeRange; @synthesize rootViewController; @synthesize cameraController; - (id)initWithViewController:(UIViewController *)vc { coordinates = [[NSMutableArray alloc] init]; coordinateViews = [[NSMutableArray alloc] init]; latestHeading = -1.0f; debugView = nil; [self setRootViewController: vc]; [self setDebugMode:NO]; [self setMaximumScaleDistance: 0.0]; [self setMinimumScaleFactor: 1.0]; [self setScaleViewsBasedOnDistance: NO]; [self setRotateViewsBasedOnPerspective: NO]; [self setMaximumRotationAngle: M_PI / 6.0]; CGRect screenRect = [[UIScreen mainScreen] bounds]; [self setDisplayView: [[UIView alloc] initWithFrame: screenRect]]; [self setCurrentOrientation:UIDeviceOrientationPortrait]; [self setDegreeRange:[[self displayView] bounds].size.width / 12]; [vc setView:displayView]; [self setCameraController: [[[UIImagePickerController alloc] init] autorelease]]; [[self cameraController] setSourceType: UIImagePickerControllerSourceTypeCamera]; [[self cameraController] setCameraViewTransform: CGAffineTransformScale([[self cameraController] cameraViewTransform], 1.13f, 1.13f)]; [[self cameraController] setShowsCameraControls:NO]; [[self cameraController] setNavigationBarHidden:YES]; [[self cameraController] setCameraOverlayView:displayView]; CLLocation *newCenter = [[CLLocation alloc] initWithLatitude:37.41711 longitude:-122.02528]; [self setCenterLocation: newCenter]; [newCenter release]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(deviceOrientationDidChange:) name: UIDeviceOrientationDidChangeNotification object:nil]; [[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications]; // Inicializa el gestor del GPS y el del acelerómetro. [self startListening]; return self; } </code></pre> <p><strong>THIRD UPDATE</strong><br /></p> <p>I've put some NSLog trace, and I see that displayAR is called after hideAR call. I also see that <code>viewDidAppear</code> method on <code>rootViewController</code> is also called after hideAR. Actually, <code>viewDidAppear</code> is calling <code>displayAR</code>.</p> <p><strong>Why is called viewDidAppear?</strong></p> <p><strong>FOURTH UPDATE</strong><br /></p> <p>I've found the line that is failing. This is the first line on <code>displayAR</code>:</p> <pre><code>[rootViewController presentModalViewController:[self cameraController] animated:NO]; </code></pre> <p><strong>Any ideas?</strong> <code>rootViewController</code> and <code>cameraController</code> aren't nil.</p> <p><strong>FITH UPDATE</strong><br /></p> <p>If you want to reproduce my error:</p> <p>I'm using nielswh's iPhone-AR-Toolkit (you can download it <a href="http://github.com/nielswh/iPhone-AR-Toolkit/tree/staticlibrary" rel="nofollow noreferrer">here</a>).</p> <p>You can modify the ARKitDemo example include it with the library and try to dismissModalView.</p>
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    1. COHey, did u manage to find a solution in how to dismiss the view? I'm currently having problems the AR view. Would appreciate some help if you have
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    2. CONo, sorry. I didn't find any solution to this problem.
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    3. CO=/ so i dont supopose u know of any examples that can show me on how to dismiss the ar? i want it to return to main menu =/
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