> On Dec 17, 2016, at 8:07 AM, Andreas Falkenhahn <andr...@falkenhahn.com> 
> wrote:
> 
> I'm not using ARC so I need to take care of releasing objects manually.
> I'm creating and presenting a modal UIViewController like this:
> 
>    MyViewController *vc = [[MyViewController alloc] init];
> 
>    vc.modalPresentationStyle = UIModalPresentationFormSheet;
>    vc.preferredContentSize = CGRectMake(320, 320);
> 
>    [self presentViewController:vc animated:YES completion:nil]
>    [vc release];
> 
> When touching the modal view's close button my code does the following:
> 
>    [[self presentingViewController] dismissViewControllerAnimated:YES 
> completion:nil];
> 
> Unfortunately, the app crashes right after the modal view has completed
> its transition animation.
> 
> When I disable the line "[vc release]", I don't get any crashes and it
> works fine. Can anybody explain why? I was expecting that 
> presentViewController()
> retained the view controller so that it is safe for me to release it
> right after making the call to presentViewController() because I don't
> need it any longer but apparently, there's something wrong in my code
> but I don't see it…

The code you’ve presented is fine, so the issue is likely to be elsewhere.

> 
> -- 
> Best regards,
> Andreas Falkenhahn                          mailto:andr...@falkenhahn.com
> 
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--
David Duncan


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