Scroll View Insets

scrollviewinsets.swift

let scrollView = UIScrollView()
scrollView.backgroundColor = .systemGreen
scrollView.contentInset = UIEdgeInsets(top: 100, left: 100, bottom: 100, right: 100)
scrollView.contentSize = self.view.bounds.size
scrollView.translatesAutoresizingMaskIntoConstraints = false
self.view.addSubview(scrollView)

let views = ["scrollview": scrollView]
NSLayoutConstraint.activate([
  NSLayoutConstraint.constraints(withVisualFormat: "H:|[scrollview]|", metrics: nil, views: views),
  NSLayoutConstraint.constraints(withVisualFormat: "V:|[scrollview]|", metrics: nil, views: views)
  ].flatMap({$0}))

let subview = UIView(frame: CGRect(x: 0, y: 0, width: 100, height: 100))
subview.backgroundColor = .white
scrollView.addSubview(subview)