SwiftUI 26 Reference

Complete API reference for iOS 26 SwiftUI features. Covers Liquid Glass design system, performance improvements, @Animatable macro, WebView, rich text editing, 3D charts, and spatial layout.

When to Use This Reference

Use this reference when you need:

• Liquid Glass APIs and toolbar patterns
• Performance improvements in iOS 26
• @Animatable macro for custom animation
• WebView and WebPage integration
• TextEditor with AttributedString
• Chart3D for 3D data visualization
• Spatial layout and scene bridging

For Liquid Glass implementation: See liquid-glass for adoption patterns.

Example Prompts

Questions you can ask Claude that will draw from this reference:

• "What Liquid Glass APIs are available in iOS 26?"
• "How do I use the @Animatable macro?"
• "How do I embed web content with WebView in SwiftUI?"
• "How do I use TextEditor with AttributedString?"
• "How do I create 3D charts in SwiftUI?"
• "What performance improvements does iOS 26 bring to SwiftUI?"

What's Covered

Liquid Glass Design

• .glassBackgroundEffect() modifier
• Toolbar spacers and roles
• Bottom-aligned search fields
• Tab bar with .tabRole(.search)
• Material-aware backgrounds

Performance Improvements

• 6x faster simple lists
• 16x faster complex lists
• Nested ScrollView optimization
• SwiftUI Instrument in Instruments 26
• Cause & Effect Graph

@Animatable Macro

• Automatic animatableData synthesis
• @AnimatableIgnored for excluded properties
• Custom animation interpolation

WebView Integration

• WebView for URL content
• WebPage for custom HTML
• Navigation and load status handling
• JavaScript interaction

Rich Text Editing

• TextEditor with AttributedString
• .textFormatting() modifier
• Character-level styling
• Markdown export

3D Charts

• Chart3D container
• BarMark3D, LineMark3D, PointMark3D
• Perspective options
• Data visualization in 3D

Scene Bridging

• UIKit ↔ SwiftUI transitions
• .sceneBridge() modifier
• Shared state management

Key Pattern

Liquid Glass Navigation

NavigationStack {
    ContentView()
        .navigationTitle("Home")
        .toolbar {
            ToolbarItem(placement: .automatic) {
                Button("Add", systemImage: "plus") { }
            }
        }
        .searchable(text: $searchText)
        .searchFieldPlacement(.navigationBarDrawer(displayMode: .always))
}

@Animatable Macro

@Animatable
struct ProgressView: View {
    var progress: Double  // Automatically animatable

    var body: some View {
        Circle()
            .trim(from: 0, to: progress)
            .stroke(lineWidth: 4)
    }
}

WebView

WebView(url: URL(string: "https://example.com")!)
    .onNavigationAction { action in
        // Handle navigation
    }
    .onLoadStatusChanged { status in
        // Track loading state
    }

Documentation Scope

This page documents the axiom-swiftui-26-ref reference skill—complete API coverage Claude uses when you need specific iOS 26 SwiftUI APIs or feature details.

For Liquid Glass adoption: See liquid-glass for implementation workflows.

For performance profiling: See swiftui-performance for Instruments workflows.

Related

• liquid-glass — Liquid Glass implementation patterns
• swiftui-performance — Performance optimization
• swiftui-animation-ref — Animation API reference
• swiftui-debugging — View update debugging

Resources

WWDC: 2025-256 (What's New in SwiftUI), 2025-268 (Swift Concurrency)

Docs: /swiftui, /swiftui/animation