Splash screen

In this post, we’ll see an object that is present in many popular applications: the Splash Screen. With the storyboard, we have a specific object for that. In SwiftUI, the splash screen is a regular view that we can create however we want. In the example, the splash screen contains a heart that pulses for two seconds.

Take a look at the code:

struct SpashView: View {
    @State private var isAnimating = false
    var body: some View {
        VStack {
            Image(systemName: "heart.fill")
                .resizable()
                .frame(width: 100, height: 100)
                .foregroundStyle(.red)
                .scaleEffect(isAnimating ? 1.5 : 1.0)
        }.onAppear {
            withAnimation(.easeInOut(duration: 1.0).repeatForever()) {
                isAnimating = true
            }
        }
    }
}

We have a variable used to start the animation (isAnimating). The image, a red heart, initially has dimensions of 100×100, but scales to 1.5 times its size. The animation lasts 1 second and loops indefinitely.

How do we display this view when the application starts? We have two possibilities:

• Create a coordinator view that contains the logic to decide what to display when the application starts.
• Add the logic mentioned in the previous point directly in the …App file.

The first solution may be the cleaner approach, but I also want to show how to modify the App file:

import SwiftUI

@main
struct SplashAppApp: App {
    @State var starting = true
    var body: some Scene {
        WindowGroup {
            if starting {
                SplashView()
                    .onAppear {
                        Task {
                            try await Task.sleep(nanoseconds: 2_000_000_000)
                            starting = false
                        }
                    }
            } else {
                ContentView()
            }
        }
    }
}

A starting variable is used to check if the application has already started or not. If the application is starting, the SplashView is displayed, and a task is initiated to wait for two seconds. After this time, the starting variable is toggled, and the main view of the application is displayed.