SwiftUI Tutorial

Introduction to SwiftUI Views & Modifiers State & Binding Stacks & Layout Lists & Navigation Forms & User Input Data Flow: ObservableObject & Environment Animations Networking & async/await in SwiftUI Combine Basics Building a Complete SwiftUI App

Introduction to SwiftUI

June 02, 2026 • 1 min read

SwiftUI is Apple's modern way to build UI for iPhone, iPad, Mac and Watch. Instead of manually updating views, you describe what the UI should look like for a given state, and SwiftUI keeps the screen in sync automatically.

Declarative vs imperative

In UIKit you say "create a label, then later set its text". In SwiftUI you say "there is a Text showing this value" — when the value changes, the Text updates itself.

Your first view

import SwiftUI

struct ContentView: View {
    var body: some View {
        Text("Hello, SwiftUI")
            .font(.title)
            .padding()
    }
}

Use the Xcode live preview (the canvas on the right) to see changes instantly without running the app.

Tip: Every SwiftUI screen is a struct conforming to View with a body property.

Summary

SwiftUI is declarative: describe the UI for your data and it stays in sync. You built your first View and saw the live preview.