Working on a small side project, I wanted to display images in my view controller view at full device width in a vertical scrolling view. Sounds simple right? The good news is that it is. While you may want to use UITableView for more control, using UIStackView is a simpler way to get up and running fast.
For my sample code, I opted to do it programmatically as it’s easier to copy & paste code than explain what constraints to add in Xcode. Also note that the code presented here is a proof of concept, quick and dirty example (not intended for production).
The steps are easy to understand:
- Add a scroll view to your view
self.scrollView = UIScrollView() scrollView.translatesAutoresizingMaskIntoConstraints = false view.addSubview(scrollView) scrollView.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor).isActive = true scrollView.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor).isActive = true scrollView.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor).isActive = true scrollView.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor).isActive = true
- Add a stack view to your scroll view
self.stackView = UIStackView() stackView.translatesAutoresizingMaskIntoConstraints = false stackView.axis = .vertical stackView.spacing = 23.0 scrollView.addSubview(stackView) scrollView.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "H:|[stackView]|", options: NSLayoutFormatOptions.alignAllCenterX, metrics: nil, views: ["stackView": stackView])) scrollView.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "V:|[stackView]|", options: NSLayoutFormatOptions.alignAllCenterX, metrics: nil, views: ["stackView": stackView]))
- Add images to your stack view
For the full code, read the ViewController on GitHub
Hope this helps you if you’re trying to throw together a quick prototype of vertically scrolling images in iOs.