The @Environment property wrapper in SwiftUI

With the @Environment property wrapper, SwiftUI provides a possibility to share data between views without explicitly passing the data from view to view. By setting an environment property on a view, it will be available not only in the view itself but also in all of its subviews.

SwiftUI provides predefined values that we can use just out of the box like colorScheme, managedObjectContext, timeZone, openURL and more.

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For example, we can access the current color scheme in our view by using the colorScheme property.

struct ContentView: View {

    @Environment(\.colorScheme) private var colorScheme

    var body: some View {
        VStack {
            Text(colorScheme == .dark ? "dark" : "light")
        }
    }
}

A full list is available at Apple's EnvironmentValues documentation.

If you like to create your own @Environmentvalues, check out this article on How to create custom @Environment values in SwiftUI.

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