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POdismissModalViewControllerAnimated: (and dismissViewControllerAnimated) crashing in iOS 5
 

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  1. POdismissModalViewControllerAnimated: (and dismissViewControllerAnimated) crashing in iOS 5
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    <p>I can't find any logical explanation, but the fact remains that, in iOS 5 (xCode 4.2), if I presentModalView:* animated:YES, I can call dismissModalViewAnimated:* fine, but if I call presentModalView:* animated:NO, then calling the dismiss method crashes. (This works the same if I use the new presentViewController:animated:completion: + dismissViewControllerAnimated:). I am going TRY to work around this for now (I don't want the presentation animated) and report a bug to Apple, but I have been beating my head on this for a while. Any and all suggestions are welcome. Not much out there on iOS 5, so please help if you can. Sample code that does not crash in iOS 4 or iOS 5:</p> <pre><code>LoginController *loginController = [[LoginController alloc] initWithNibName:@"LoginControllerGG" bundle:nil]; [self presentModalViewController:loginController animated:YES]; [loginController release]; ... [self dismissModalViewControllerAnimated:YES]; </code></pre> <p>This will crash in iOS 5 with EXC_BAD_ACCESS on the dismiss call:</p> <pre><code>LoginController *loginController = [[LoginController alloc] initWithNibName:@"LoginControllerGG" bundle:nil]; [self presentModalViewController:loginController animated:NO]; [loginController release]; ... [self dismissModalViewControllerAnimated:YES]; //crashes with EXC_BAD _ACCESS </code></pre> <p>One note: I have an animation within the loginController that happens on viewDidLoad. Going to see if taking that out changes anything, but I wanted to get this out there since I need a solution asap. </p> <hr> <p>[Edit] Full code flow... In AppDelegate, application:didFinishLaunchingWithOptions:</p> <pre><code>if (!loggedIn) [myViewController showLoginPanel]; </code></pre> <p>In myViewController:</p> <pre><code>- (void)showLoginPanel { LoginController *loginController = [[LoginController alloc] initWithNibName:@"LoginControllerGG" bundle:nil]; if ([self respondsToSelector:@selector(presentViewController:animated:completion:)]) { [self presentViewController:loginController animated:NO completion:nil]; } else { [self presentModalViewController:loginController animated:NO]; //iOS 4 works fine with or without animation } [loginController release]; } </code></pre> <p>In loginController:</p> <pre><code>- (IBAction)closeLoginWindow { [[NSNotificationCenter defaultCenter] postNotificationName:@"CloseLoginWindow" object:nil]; } //doing it this way because calling on the self.parentViewController doesn't work </code></pre> <p>Back in myViewController:</p> <pre><code>- (void) viewDidLoad ... [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(closeLoginWindow) name:@"CloseLoginWindow" object:nil]; ... - (void)closeLoginWindow { if ([self respondsToSelector:@selector(dismissViewControllerAnimated:completion:)]) { [self dismissViewControllerAnimated:YES completion:nil]; //iOS 5 crashes only if presentation was not animated } else [self dismissModalViewControllerAnimated:YES]; //deleting the previous condition, iOS 5 still crashes if presentation was not animated } </code></pre>
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    1. USJoel Cave
    1. USJoel Cave
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    1. COAs I suspected, removing the animation from the viewDidLoad method of loginController has no bearing on the issue. Grasping at straws here.
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      1. USJoel Cave
    2. COThat sure is strange. Are you sure you are not releasing loginController at any place other than [loginController release] ?
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      1. USManali
    3. COI will check to be sure, but changing the animation flag and leaving all other code as is causes a crash. I would think a management problem would present itself regardless of the animation, but this is inexplicable at the moment, so I will surely check.
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