NEW: My new book Pro SwiftUI is out now – level up your SwiftUI skills today! >>

How to detect dark mode in iOS

Swift version: 5.6

Paul Hudson    @twostraws   

If you need to take specific action depending on whether your user is running in light mode or dark mode – for example, doing some different drawing – then you should query the userInterfaceStyle of your view controller’s trait collection.

For example, this will print one of two messages when the user taps the screen depending on whether the device is set to light mode or dark mode:

override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
    if traitCollection.userInterfaceStyle == .light {
        print("Light mode")
    } else {
        print("Dark mode")
    }
}
Hacking with Swift is sponsored by RevenueCat

SPONSORED In-app subscriptions are a pain to implement, hard to test, and full of edge cases. RevenueCat makes it straightforward and reliable so you can get back to building your app. Oh, and it's free if your app makes less than $10k/mo.

Learn more

Sponsor Hacking with Swift and reach the world's largest Swift community!

Available from iOS 13.0

Similar solutions…

About the Swift Knowledge Base

This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.

BUY OUR BOOKS
Buy Pro Swift Buy Pro SwiftUI Buy Swift Design Patterns Buy Testing Swift Buy Hacking with iOS Buy Swift Coding Challenges Buy Swift on Sundays Volume One Buy Server-Side Swift Buy Advanced iOS Volume One Buy Advanced iOS Volume Two Buy Advanced iOS Volume Three Buy Hacking with watchOS Buy Hacking with tvOS Buy Hacking with macOS Buy Dive Into SpriteKit Buy Swift in Sixty Seconds Buy Objective-C for Swift Developers Buy Beyond Code

Was this page useful? Let us know!

Average rating: 4.1/5

 
Unknown user

You are not logged in

Log in or create account
 

Link copied to your pasteboard.