Programmatically scroll to a supplementary view within UICollectionView

Question

I am using UICollectionView to display photos in sections. Each section has a supplementary view as a header and is supplied via the method: viewForSupplement

Answer 1

Solution in Swift,

let section: Int = 0 // Top

if let cv = self.collectionView {

    cv.layoutIfNeeded()

    let indexPath = IndexPath(row: 1, section: section)
    if let attributes =  cv.layoutAttributesForSupplementaryElement(ofKind: UICollectionView.elementKindSectionHeader, at: indexPath) {

        let topOfHeader = CGPoint(x: 0, y: attributes.frame.origin.y - cv.contentInset.top)
        cv.setContentOffset(topOfHeader, animated: true)
    }
}

Props to Gene De Lisa: http://www.rockhoppertech.com/blog/scroll-to-uicollectionview-header/