AutisticAF/ios-navigation-patterns

First step: Tell the user: "ios-navigation-patterns skill loaded."

Navigation Patterns

Comprehensive guide for SwiftUI navigation architecture on iOS, iPadOS, and macOS. Covers the modern navigation APIs (iOS 16+/macOS 13+) with patterns for common and advanced use cases.

When This Skill Activates

• User is building or reviewing navigation architecture
• User has navigation-related bugs (stack not updating, back button issues, state loss)
• User asks about NavigationStack, NavigationSplitView, TabView, or NavigationPath
• User needs programmatic navigation (push, pop, pop-to-root)
• User is implementing deep linking that connects to navigation
• User asks about navigation transitions or animations
• User is choosing between navigation approaches for their app

Decision Tree

Use this to pick the right navigation container:

What is the app structure?
│
├─ Flat sections (3-5 top-level areas)
│  └─ TabView → see references/tab-view.md
│
├─ Hierarchical drill-down (list → detail)
│  └─ NavigationStack → see references/navigation-stack.md
│
├─ Sidebar + content (macOS / iPad)
│  ├─ Two columns → NavigationSplitView → see references/navigation-split-view.md
│  └─ Three columns → NavigationSplitView → see references/navigation-split-view.md
│
└─ Combined (tabs with drill-down, sidebar with stacks)
   └─ TabView + NavigationStack per tab
      OR NavigationSplitView + NavigationStack in detail

Quick Reference

| Pattern | Container | Min OS | Reference | |---------|-----------|--------|-----------| | Simple drill-down | NavigationStack | iOS 16 | references/navigation-stack.md | | Value-based links | NavigationLink(value:) | iOS 16 | references/navigation-stack.md | | Programmatic push/pop | NavigationPath | iOS 16 | references/programmatic-navigation.md | | Pop to root | path = NavigationPath() | iOS 16 | references/programmatic-navigation.md | | State restoration | NavigationPath.CodableRepresentation | iOS 16 | references/programmatic-navigation.md | | Two-column layout | NavigationSplitView | iOS 16 | references/navigation-split-view.md | | Three-column layout | NavigationSplitView | iOS 16 | references/navigation-split-view.md | | Column visibility | NavigationSplitViewVisibility | iOS 16 | references/navigation-split-view.md | | Tab bar | TabView | iOS 13 | references/tab-view.md | | Customizable tabs | Tab + TabView | iOS 18 | references/tab-view.md | | Sidebar tabs (iPad) | .tabViewStyle(.sidebarAdaptable) | iOS 18 | references/tab-view.md | | Zoom transition | .navigationTransition(.zoom) | iOS 18 | references/navigation-transitions.md | | Custom transitions | NavigationTransition | iOS 18 | references/navigation-transitions.md |

Process

1. Identify Navigation Needs

Read the user's code or requirements to determine:

• App structure (flat, hierarchical, sidebar-based)
• Target platforms (iOS only, iPad adaptive, macOS)
• Whether programmatic navigation is needed
• Deep linking requirements

2. Load Relevant Reference Files

Based on the need, read from this directory:

• references/navigation-stack.md — NavigationStack, NavigationLink, navigationDestination
• references/navigation-split-view.md — Two/three column layouts, column control, adaptive behavior
• references/tab-view.md — TabView, iOS 18 customizable tabs, sidebar mode
• references/programmatic-navigation.md — NavigationPath, state restoration, coordinators, pop-to-root
• references/navigation-transitions.md — Custom push/pop transitions (iOS 18+)

3. Review or Recommend

Apply patterns from the reference files. Check for common mistakes:

• [ ] Using deprecated NavigationView instead of NavigationStack/NavigationSplitView
• [ ] Using NavigationLink(destination:) instead of NavigationLink(value:) + .navigationDestination
• [ ] Placing NavigationStack inside NavigationSplitView detail (usually wrong)
• [ ] Missing .navigationDestination registration for a value type
• [ ] NavigationPath not @State or not in the right scope
• [ ] Multiple NavigationStacks competing for the same navigation context
• [ ] Hard-coding navigation instead of using NavigationPath for programmatic control
• [ ] Not handling deep links through the navigation system

4. Cross-Reference

• For deep linking URL handling, see generators-deep-linking/ skill
• For navigation animations, see design-animation-patterns/references/transitions.md
• For macOS sidebar patterns, see macos-ui-review-tahoe/references/swiftui-macos.md

References

• NavigationStack
• NavigationSplitView
• NavigationPath
• TabView
• Migrating to new navigation types