Update UICollectionView with animation

gistfile1.m

- (void)viewWillTransitionToSize:(CGSize)size withTransitionCoordinator:(id<UIViewControllerTransitionCoordinator>)coordinator
{
    [super viewWillTransitionToSize:size withTransitionCoordinator:coordinator];
    
    [coordinator animateAlongsideTransition:nil completion:^(id<UIViewControllerTransitionCoordinatorContext> context) {
        [self.collectionView performBatchUpdates:^{
            [self.collectionView setCollectionViewLayout:self.collectionView.collectionViewLayout animated:YES];
        } completion:nil];
    }];
}