NEW: Master Swift design patterns with my latest book! >>

How to add a border outline color to a UIView

Written by Paul Hudson    @twostraws

Any UIView subclass has a built-in way to draw a border around it using its underlying CALayer. For example, to draw a 10-point black border around a view, you'd use this:

yourView.layer.borderWidth = 10
yourView.layer.borderColor = UIColor.black.cgColor

Note that you need to use the cgColor property of your UIColor in order for this to work. Adding a border to a view even works if you also round the corners of your view – it's very flexible!

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.

Upgrade to the premium experience

Get all 40 projects in PDF and ePub, plus exclusive content that will take your Swift learning to the next level – buy the Hacking with Swift book today!

Click here to visit the Hacking with Swift store >>