How to make two UIScrollView dependent on each other?

Question

iOS

Good afternoon.
The crux of the problem is this, there are two separate UIScrollViews on the same ViewController.
How to connect them together so that when you move one second one moves identically?
Has anyone else experienced this
? Thank you in advance for your replies!

Answer 1

Try like this:

class MultiScrollViewController: UIViewController {
    // ...

    override func viewDidLoad() { 
        super.viewDidLoad()

        firstView.delegate = self
        secondView.delegate = self
    }

    // ...
}

extension MultiScrollViewController: UIScrollViewDelegate {
    func scrollViewDidScroll(scrollView: UIScrollView) {
        firstView.contentOffset = scrollView.contentOffset
        secondView.contentOffset = scrollView.contentOffset
    }
}