How to dim the screen
Swift version: 5.0
There is no built-in way to dim the screen unless you're presenting a view controller, at which point iOS dims the background view controller for you.
Instead, if you want to dim stuff you need to do it yourself: create a full-screen UIView with a translucent background color (I find 66% black works best) then set its alpha to be 0. When you want things to dim, set the alpha to be 1.
SPONSOR Meet the new Instabug – more than just bug reporting! We help you build better apps and minimize your debugging time. With each bug report, we automatically capture details like network requests, repro steps, and session details. Get real-time crash reports with stack trace details and session data to help you catch and fix issues easily. And with our customizable in-app surveys, you’ll gather insightful user feedback and much more. Instabug is the fastest and easiest way to release with confidence. Start your free trial now! Start your free trial now!
Available from iOS 2.0
Did this solution work for you? Please pass it on!
Other people are reading…
- How to make your user interface in code
- How to hide your navigation bar when the keyboard shows: hidesBarsWhenKeyboardAppears
- How to check whether users have enabled the reduced motion setting
- How to animate when your size class changes: willTransition(to:)
- How to draw custom views in Interface Builder using IBDesignable
About the Swift Knowledge Base
This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.
