SwiftUI Preview

Preview in SwiftUI speeds up the development process as we don’t need to build and run our application every time we make some changes. Here are some tips how I use the Preview function.

Light and dark mode side-by-side

Change your code this way:

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        Group {
            ContentView()
                .preferredColorScheme(.light)
            ContentView()
                .preferredColorScheme(.dark)
        }
    }
}

Focus on important part not the whole screen

Add this:

    .previewLayout(.sizeThatFits)

I hope it helps and you will be more efficient.