PresentViewController crash on iOS 4.3 but not on iOS 5

Question

Can anyone tell me why this code crashes with SIGABRT unrecognised selector sent to instance, on 4.3 simulator, but works just fine on iOS 5 simulator?

matchSetup = [[viewMatchSetup alloc]initWithNibName:@"viewMatchSetup" bundle:nil];
[matchSetup setModalTransitionStyle:UIModalTransitionStyleFlipHorizontal];
[self presentViewController:matchSetup animated:YES completion:NULL];

Thanks in advance

FIX: [self presentModalViewController:matchSetup animated:YES]; //Modal being the required change

DarkDust · Accepted Answer · 2012-02-07T14:09:53.663

12

It crashes because the presentViewController:animated:completion: method of UIViewController is not available on iOS 4.3. It was introduced in iOS 5. Since you don't use the completion block, simply use the "old" method presentModalViewController:animated::

[self presentModalViewController:matchSetup animated:YES];

edited Feb 07 '12 at 14:09

answered Feb 07 '12 at 12:35

DarkDust

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You can perform the check with `respondsToSelector:` function – Alexander Feb 07 '12 at 12:38
[self presentViewController:matchSetup animated:YES]; Oh hang, that doesn't work either. Same error. – Dann Feb 07 '12 at 13:21
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[self presentModalViewController:matchSetup animated:YES] works – Dann Feb 07 '12 at 13:42
Ouch, even though I cited the method with the correct name, my example was wrong. Have fixed it. – DarkDust Feb 07 '12 at 14:10

PresentViewController crash on iOS 4.3 but not on iOS 5

1 Answers1