How to dim the screen
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.
Available from iOS 2.0
Did this solution work for you? Please pass it on!
Other people are reading…
- How to use UISearchController to let users enter search words
- How to read the battery level of an iPhone or iPad
- How to activate multiple Auto Layout constraints using activate()
- How to set the tabs in a UITabBarController
- How to animate a blur effect using UIVisualEffectView
About the Swift Knowledge Base
This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.
