iOS6 UICollectionView and UIPageControl - How to get visible cell?

Question

While studying iOS6 new features I got a question about UICollectionView.
I am currently testing it with Flow layout and the scroll direction set to horizontal, scrolli

Answer 1

1. Place PageControl in your view or set by Code.
2. Set UIScrollViewDelegate
3. In Collectionview-> cellForItemAtIndexPath (Method) add the below code for calculate the Number of pages,

int pages =floor(ImageCollectionView.contentSize.width/ImageCollectionView.frame.size.width); [pageControl setNumberOfPages:pages];

Add the ScrollView Delegate method,

pragma mark - UIScrollVewDelegate for UIPageControl

- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
{
    CGFloat pageWidth = ImageCollectionView.frame.size.width;
    float currentPage = ImageCollectionView.contentOffset.x / pageWidth;

    if (0.0f != fmodf(currentPage, 1.0f))
    {
        pageControl.currentPage = currentPage + 1;
    }
    else
    {
        pageControl.currentPage = currentPage;
    }
    NSLog(@"finishPage: %ld", (long)pageControl.currentPage);
}