"UIPopoverPresentationController presentationTransitionWillBegin" crash when using UIPopoverController

Question

I am getting the following crash when I open a popover by tapping on a bar button item on my main controller and then rotating the view.

"NSGenericException: UIPopoverPresentationController should have a non-nil sourceView or barButtonItem set before the presentation occurs."

I looked at a similar crash here - UIActivityViewController crashing on iOS8 iPads, but I am not directly using "UIPopoverPresentationController" anywhere in my code.

My main controller is an UIViewController and has a barbuttonitem which when tapped opens up a popover as another controller which is UITableViewController (DisplayTableViewController class). Below is the code:

In my main controller in a custom method say "createPopover" I have:

- (void)createPopover   
{
        self.tableViewController = [[DisplayTableViewController alloc] init];
        self.tableViewController.someDelegate = self;

        UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:self.tableViewController];

        // Display the popover.
        self.navBarButtonItemPopoverController = [[UIPopoverController alloc] initWithContentViewController:navigationController];
        self.navBarButtonItemPopoverController.delegate = self;

        [self displayPopover:self.myBarButton];   
}

- (void)displayPopover:(id)sender
{       
        [self.navBarButtonItemPopoverController presentPopoverFromBarButtonItem:sender
                                                   permittedArrowDirections:UIPopoverArrowDirectionAny
                                                                   animated:YES];
}

When I rotate the view this gets executed. This code is also in my main controller:

- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation
{
    [super didRotateFromInterfaceOrientation:fromInterfaceOrientation];

    if ([self.navBarButtonItemPopoverController isPopoverVisible])
    {
        [self.navBarButtonItemPopoverController dismissPopoverAnimated:NO];

        [self performSelector:@selector(displayPopover:) withObject:self.myBarButton afterDelay:0.0];
    }
}

After this the app crashes with the mentioned error. In my createPopover method, I tried:

self.tableViewController.popoverPresentationController.sourceView = [self view];

But nothing helps. When I print out "self.tableViewController.popoverPresentationController" or "self.popoverPresentationController" anytime in the life cycle, it's always nil. Also I noticed "sender" in displayPopover method is always present i.e. before rotation and after rotation too and is the same object.

Any idea why the popoverPresentationController is nil or why the app is crashing?

bluedome · Accepted Answer · 2014-12-27T04:01:09.157

4

This is iOS8 issue. As you know, -didRotateFromInterfaceOrientation: has been deprecated in iOS8. Try new API -viewWillTransitionToSize:withTransitionCoordinator:. Just implementing it would solve your problem.

- (void)viewWillTransitionToSize:(CGSize)size withTransitionCoordinator:(id <UIViewControllerTransitionCoordinator>)coordinator 
{
    [super viewWillTransitionToSize:size withTransitionCoordinator:coordinator];
    // we have nothing to do.
}

edited Dec 27 '14 at 04:01

answered Dec 27 '14 at 03:41

bluedome

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Oh great. This actually helped in solving the issue. But any idea why was it complaining about sourceView and barButtonItem though. From whatever I had learnt, it seemed that the sourceType or barButtonItem was not being set and hence it was crashing. – tech_human Dec 27 '14 at 14:44

"UIPopoverPresentationController presentationTransitionWillBegin" crash when using UIPopoverController

1 Answers1