How do I handle theming and dark mode in UIKit with Swift?

Handling theming and dark mode in UIKit with Swift allows developers to create applications that adapt their user interface according to the system's appearance settings. This enhances user experience by ensuring that the app remains visually appealing and consistent with the user's preferences.

The following example demonstrates how to implement dark mode support in a simple UIKit application:

// In your ViewController class: override func viewDidLoad() { super.viewDidLoad() setupAppearance() } func setupAppearance() { if traitCollection.userInterfaceStyle == .dark { // Apply dark mode colors view.backgroundColor = UIColor.black myLabel.textColor = UIColor.white } else { // Apply light mode colors view.backgroundColor = UIColor.white myLabel.textColor = UIColor.black } } override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) { super.traitCollectionDidChange(previousTraitCollection) if traitCollection.hasDifferentColorAppearance(comparedTo: previousTraitCollection) { setupAppearance() // Update appearance for the new style } }

theming dark mode UIKit Swift user interface appearance settings

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