DEV Community

Thomas Prezioso Jr.
Thomas Prezioso Jr.

Posted on


How to Detect Dark Mode in SwiftUI

SwiftUI makes it really simply to detect when dark mode is enabled. We simply have to add a @Enviroment variable and use .colorScheme property to scan the settings on our device and see if dark mode is enabled.

Let's take a look at the example below.

struct ContentView: View {
    @Environment(\.colorScheme) var colorScheme

    var body: some View {
        ZStack {
            Color(colorScheme == .light ? .blue : .red)
            Text("Hello, World!")

In the code above we are creating the @Environment variable to see if our device is in dark mode. Then inside of our body view we are setting the background color to red if its in dark mode or blue if its not in dark mode by using our colorScheme variable inside of a ternary operator.

A great use case for this is if you want to support different custom UI's for when the users device is in dark mode.

πŸŒƒ Happy Coding! πŸŒƒ

Top comments (0)

An Animated Guide to Node.js Event Loop

Node.js doesn’t stop from running other operations because of Libuv, a C++ library responsible for the event loop and asynchronously handling tasks such as network requests, DNS resolution, file system operations, data encryption, etc.

What happens under the hood when Node.js works on tasks such as database queries? We will explore it by following this piece of code step by step.