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

In SwiftUI, handling theming and dark mode can be achieved using environment values and custom appearance settings. You can define your colors and styles in a way that adapts to the current environment, allowing your app to automatically switch between light and dark modes.

To implement this, you can use the `Color` type for UI elements and define color schemes in your asset catalog or directly in your SwiftUI views. Additionally, you can observe changes in the color scheme using the `@Environment` property wrapper.

Here’s an example of how to create a simple SwiftUI view that respects the system color scheme:

import SwiftUI struct ContentView: View { @Environment(\.colorScheme) var colorScheme var body: some View { VStack { Text("Hello, World!") .padding() .background(colorScheme == .dark ? Color.black : Color.white) .foregroundColor(colorScheme == .dark ? Color.white : Color.black) // Additional UI elements can be added here } } } struct ContentView_Previews: PreviewProvider { static var previews: some View { Group { ContentView() .preferredColorScheme(.light) ContentView() .preferredColorScheme(.dark) } } }

theming dark mode SwiftUI color scheme environment values

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