Keeping the contentOffset in a UICollectionView while rotating Interface Orientation

Question

I\'m trying to handle interface orientation changes in a UICollectionViewController. What I\'m trying to achieve is, that I want to have the same contentOffset afte

Answer 1

Use and in the method didRotateFromInterfaceOrientation: reload data of the CollectionView.

Implement collectionView:layout:sizeForItemAtIndexPath: method of and in the method verify the Interface orientation and apply your custom size of each cell.

- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath
{

    UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];

    if (UIInterfaceOrientationIsPortrait(orientation)) {

        return CGSizeMake(CGFloat width, CGFloat height);

    } else {

        return CGSizeMake(CGFloat width, CGFloat height);

    }

}