Broadly speaking it’s important to place your views so they are inside the safe area layout guide, but there are some occasions when you want to ignore that and have some that run under the safe area. Apple’s Weather app, for example, goes edge to edge with background weather graphics, then places the important content inside the safe area.
This is easy enough to accomplish: just make sure your background view goes edge to edge using your main view’s leading, trailing, top, and bottom anchors, then use the safe area layout guide’s anchors for your foreground view.
Here’s how that looks in code:
let background = UIView() background.translatesAutoresizingMaskIntoConstraints = false background.backgroundColor = .red view.addSubview(background) let foreground = UIView() foreground.translatesAutoresizingMaskIntoConstraints = false foreground.backgroundColor = .blue view.addSubview(foreground) background.leadingAnchor.constraint(equalTo: view.leadingAnchor).isActive = true background.trailingAnchor.constraint(equalTo: view.trailingAnchor).isActive = true background.topAnchor.constraint(equalTo: view.topAnchor).isActive = true background.bottomAnchor.constraint(equalTo: view.bottomAnchor).isActive = true foreground.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor).isActive = true foreground.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor).isActive = true foreground.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor).isActive = true foreground.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor).isActive = true
Available from iOS 11.0
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