UICollectionView not resizing correctly

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Trying to resize a UICollectionViewCell when a user presses it. At the moment, the cell resizes, but the other cells do not react to it. Here is a picture of the issue:

Here is the code I am using. I have a feeling the issue is with the invalidating, but I am not sure:

- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath
{


    UICollectionViewCell * cellToChangeSize = [self.collectionView cellForItemAtIndexPath:indexPath]; // Avoid retain cycles

    UICollectionViewCell *__weak cell = [self.collectionView cellForItemAtIndexPath:indexPath]; // Avoid retain cycles
    void (^animateChangeWidth)() = ^()
    {
        CGRect frame = cell.frame;
        frame.size = CGSizeMake(300, 100);
        cell.frame = frame;
    };

    // Animate

    [UIView transitionWithView:cellToChangeSize duration:0.1f options: UIViewAnimationOptionCurveLinear animations:animateChangeWidth completion:^(BOOL finished) {
        [self.collectionView.collectionViewLayout invalidateLayout];


    }];

}

asked 37 secs ago

spogebob92

138

UICollectionView not resizing correctly