How can I hide a collectionView when scrolling in my tableView (knowing that this ViewCOntroller is half tableview and half collectionview)

Question

So I have a UIViewController that have a collectionView with horizontal scrolling (like the facebook stories on the top of newsFeed page) and under it is the tableView with cells. How can I hide this collection view when I scroll down the tableView ? I want it to exactly like facebook.

Answer 1

You have to set collectionView height constraint, and when you begin dragging table view:

heightConstraint.constant = 0

You can know about start dragging from table view delegate. For this you should inherit your viewController from UITableViewDelegate and set a function :

class ViewController: UIViewController, UITableViewDelegate {
    override func viewDidLoad() {
    super.viewDidLoad()
    self.tableView.delegate = self
    }

    func scrollViewWillBeginDragging(_ scrollView: UIScrollView) {
    print("begin dragging")
    heightConstraint.constant = 0
    }
}