StackOverflow2013

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POCollectionView orientation issues
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copied!<p>I currently have a collection view with a grid of images on it, when selecting an image this segues to another collection view with a full screen image on it.</p> <p>To do this I am using:</p> <pre><code> - (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender { if ([segue.identifier isEqualToString:@"collectionView"]) { QuartzDetailViewController *destViewController = (QuartzDetailViewController *)segue.destinationViewController; NSIndexPath *indexPath = [[self.collectionView indexPathsForSelectedItems] objectAtIndex:0]; destViewController.startingIndexPath = indexPath; [destViewController.collectionView scrollToItemAtIndexPath:indexPath atScrollPosition:UICollectionViewScrollPositionCenteredHorizontally animated:NO]; [self.collectionView deselectItemAtIndexPath:indexPath animated:NO]; } } </code></pre> <p>and then in my detail view:</p> <pre><code>- (void)scrollViewDidScroll:(UIScrollView *)scrollView { if (_startingIndexPath) { NSInteger currentIndex = floor((scrollView.contentOffset.x - scrollView.bounds.size.width / 2) / scrollView.bounds.size.width) + 1; if (currentIndex < [self.quartzImages count]) { self.title = self.quartzImages[currentIndex][@"name"]; } } } - (void)viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; UICollectionViewFlowLayout *layout = (UICollectionViewFlowLayout *)self.collectionView.collectionViewLayout; layout.itemSize = self.view.bounds.size; [self.collectionView scrollToItemAtIndexPath:self.startingIndexPath atScrollPosition:UICollectionViewScrollPositionCenteredHorizontally animated:NO]; } </code></pre> <p>when I rotate to landscape the image disappears and the title at the top changes, if I go back to the grid and then select a cell again it will segue again to the detail view but the title is for a different cell and the image shows half and half between two different images.</p> <p>I am getting the following message as well on the log when I rotate the device:</p> <pre><code>2013-06-04 17:39:53.869 PhotoApp[6866:907] the behavior of the UICollectionViewFlowLayout is not defined because: 2013-06-04 17:39:53.877 PhotoApp[6866:907] the item height must be less that the height of the UICollectionView minus the section insets top and bottom values. </code></pre> <p>How can I correct this so it will support orientation.</p> <p>Thanks</p>

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