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POWhy UIAlertView prevents my modal view controller from being displayed?
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copied!<p>Let's say that when the user presses a button a message needs to be shown and then a modal view controller is displayed. I would write something like that :</p> <pre><code>- (void)pickImageButtonPressed:(id)button { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Alert" message:@"Some alert" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil]; [alert show]; [alert release]; UIImagePickerController *picker = [[UIImagePickerController alloc] init]; picker.delegate = self; picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; [[UIApplication sharedApplication].keyWindow.rootViewController presentModalViewController:picker animated:YES]; [picker release]; } </code></pre> <p>With this code, <strong>the modal view controller is simply not displayed</strong> !</p> <p>However, if I <strong>switch the two blocks</strong> of code (show modal first, then show the alert), the view controller is displayed modally and the alert shows up above it, exactly as I want.</p> <p>My question is: <strong>why the alert prevents the modal view controller from being displayed ?</strong></p> <p>Please note that I do not want to wait for alert to be dismissed before calling <em>presentModalViewController</em>.</p> <hr> <p><strong>Update :</strong> I figured out that my production code was a bit more complicated than what I first put. I updated the example code and then finally found a simple example to reproduce the problem.</p> <p>Note that in my production code, the popup is displayed from a place where I don't have any reference to a view controller, that's why I use <em>[UIApplication sharedApplication].keyWindow.rootViewController instead of a direct reference to a view controller</em></p>

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