All views can have shadows thanks to the
CALayer behind them, but you can use that same property to create glow effects. For example, this creates a 128x128 view then gives it a 20-point yellow glow:
let vw = UIView(frame: CGRect(x: 100, y: 100, width: 128, height: 128)) vw.backgroundColor = .white vw.layer.shadowOffset = .zero vw.layer.shadowColor = UIColor.yellow.cgColor vw.layer.shadowRadius = 20 vw.layer.shadowOpacity = 1 vw.layer.shadowPath = UIBezierPath(rect: vw.bounds).cgPath
Bright glows work best on a dark background, so try making your main view black:
view.backgroundColor = .black
Available from iOS 3.2
Did this solution work for you? Please pass it on!
Other people are reading…
About the Swift Knowledge Base
This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.