How can I create a SwiftUI App?

To create a SwiftUI app, you can follow these steps:

Launch Xcode: Open Xcode, Apple's integrated development environment (IDE).
Create a New Project: Select "Create a new Xcode project" and choose the "App" template under the iOS, macOS, watchOS, or tvOS section, depending on your target platform.
Set Up Your Project: Enter your project name, organization identifier, and other settings. Make sure to select "SwiftUI" for the User Interface option.
Understand SwiftUI Basics: SwiftUI is a declarative framework, meaning you describe what your UI should look like and SwiftUI takes care of rendering it. Views are the basic building blocks in SwiftUI. They are declarative, compositional, and state-driven.
- Declarative: You describe what view you want in your user interface, and SwiftUI produces the result.
- Compositional: You can combine smaller views to create more complex ones.
- State-Driven: Views automatically update when the state changes.

Build Your First View: Start by creating a simple view. For example, you can create a Text view inside a VStack (vertical stack) to display text vertically.

import SwiftUI

struct ContentView: View {
    var body: some View {
        VStack {
            Text("Hello, SwiftUI!")
                .font(.largeTitle)
                .padding()
            Text("Welcome to your first SwiftUI app.")
                .font(.subheadline)
        }
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}

Run Your App: Click the "Run" button in Xcode to build and run your app on the simulator or a connected device.

For more detailed guidance, you can watch the SwiftUI essentials session from WWDC 2024, which covers the fundamentals of views, built-in capabilities, and how to use SwiftUI across all Apple platforms.

Relevant Sessions

These sessions provide a comprehensive overview of SwiftUI and its capabilities, helping you get started with building your SwiftUI app.