Axiom Swiftui

charleswiltgen/axiom/.claude-plugin/plugins/axiom/skills/axiom-swiftui

by charleswiltgene45d98ffbb5fMIT1.1K starsListed Oct 9, 2026Updated Oct 8, 2026Repository updated today

Use when building, fixing, or improving ANY SwiftUI UI — views, navigation, layout, animations, gestures, debugging, iOS 26 features, iPhone Duo, view-level performance, feature architecture.

Instructions onlySoftware Development
AI-generated overview

Router skill that directs SwiftUI work — views, navigation, layout, animation, gestures, debugging, previews and iOS 26 features — to reference files and…

What it does
This is a routing and reference skill for SwiftUI development. It maps symptoms and tasks, such as a view not updating, navigation problems, layout breaks, slow previews or gesture conflicts, to specific reference documents in the suite, and points to automated auditor agents for architecture, performance, navigation, layout, UX flow, Liquid Glass and TextKit scans. It also lists non-SwiftUI UI topics that live in other suites and gives conflict-resolution guidance for UI performance work.
When to use it
Use it when building, fixing or improving any SwiftUI interface, including views, state, navigation, layout, animations, gestures, previews and iOS 26 features. It is also the entry point when deciding which SwiftUI reference or auditor applies to a given problem.
Requirements
Instructions only; no scripts are shipped. Some referenced auditor agents require Bash, builds, tests, simulators or crash symbolication and are described as Claude Code-only, while others can be followed inline with file search and read.

SwiftUI

You MUST use this skill for ANY SwiftUI work including views, state, navigation, layout, animations, architecture, gestures, and debugging.

<!-- AXIOM_AUDITOR_INLINE_BEGIN — auto-maintained by scripts/build-inlined-auditors.ts; do not hand-edit -->

Not on Claude Code? Where this router says "Launch some-auditor agent", read that auditor's file in this suite and follow it inline — the same procedure, needing only file search and read.

Available here: skills/swiftui-architecture-auditor.md, skills/swiftui-layout-auditor.md, skills/swiftui-nav-auditor.md, skills/swiftui-performance-analyzer.md, skills/textkit-auditor.md, skills/ux-flow-auditor.md. Homed in another suite: axiom-design/skills/liquid-glass-auditor.md.

Agents that need Bash — builds, tests, simulators, crash symbolication — stay Claude Code-only; there is no inline equivalent for those.

<!-- AXIOM_AUDITOR_INLINE_END -->

Quick Reference

Symptom / TaskReference
View not updatingSee skills/debugging.md
View update still broken after debuggingSee skills/debugging-diag.md
Slow previews / building good previews / @Previewable / PreviewModifier / variant matrixSee skills/previews.md
Preview API reference (#Preview, traits, modes, Development Assets)See skills/previews-ref.md
Preview crashes / won't loadSee skills/debugging.md (Preview Crashes section)
Hot reload / live editing / edit the running app on deviceSee skills/hot-reload.md
Navigation issuesSee skills/nav.md
Navigation still broken after debuggingSee skills/nav-diag.md
Navigation API referenceSee skills/nav-ref.md
Layout breaks on iPad/rotationSee skills/layout.md
State lost on resize/rotation (scroll, selection, focus, drafts)See skills/layout.md (State Survives the Transition)
Layout API referenceSee skills/layout-ref.md
Performance/lag/slow scrollSee skills/swiftui-performance.md
Architecture/testabilitySee skills/architecture.md
@State object rebuilt every view init, or an init assignment ignored at runtimeSee skills/architecture.md (@State is a macro now)
Animation issuesSee skills/animation-ref.md
Stacks/grids/outlinesSee skills/containers-ref.md
Custom containers / List replacement (iOS 18+)See skills/containers-ref.md Part 7
Search implementationSee skills/search-ref.md
Toolbars, ToolbarItem, sheet button placement, customizationSee skills/toolbars.md
Navigation subtitle: navigationSubtitle, .title / .subtitle / .largeTitle / .largeSubtitle placements (iOS 26)See skills/toolbars.md (Pattern 14)
Sheets, detents, popovers, fullScreenCover, presentation adaptationSee skills/presentations.md
Multi-column Table, sortable/resizable columns (iPad/Mac; collapses to first column in compact)See axiom-macos (skills/swiftui-differences.md)
Inspector panel (.inspector — trailing column in regular width, sheet in compact)See axiom-macos (skills/swiftui-differences.md)
Gesture conflictsSee skills/gestures.md
Section index — the vertical A–Z index strip / alphabet scrubber on a list's trailing edge, jump-to-sectionSee skills/26-ref.md (Section Index)
List section margins / insets around a SectionSee skills/26-ref.md (Section Margins)
Web content — WebView / WebPage, scroll modifiers, WebView-in-NavigationStackSee skills/26-ref.md (WebView & WebPage)
iPhone Duo / foldable iPhone: poses, vertical bars, the fold, arrangements, hinge, scene accessories (SwiftUI and UIKit)See skills/iphone-duo.md
iOS 26 featuresSee skills/26-ref.md

Non-SwiftUI UI Routes

These topics are part of the broader iOS UI domain but live in separate suites:

UIKit issues
  • Auto Layout conflicts → See axiom-uikit (skills/auto-layout-debugging.md)
  • Animation timing → See axiom-uikit (skills/uikit-animation-debugging.md)
  • SwiftUI ↔ UIKit bridging → See axiom-uikit (skills/uikit-bridging.md)
Design & guidelines
  • Liquid Glass adoption → See axiom-design (skills/liquid-glass.md)
  • SF Symbols → See axiom-design (skills/sf-symbols.md)
  • HIG compliance → See axiom-design (skills/hig.md)
  • Typography → See axiom-design (skills/typography-ref.md)
  • TextKit/rich text → See axiom-uikit (skills/textkit-ref.md)
Other
  • tvOS (focus, remote, text input) → See axiom-swift (skills/tvos.md)
  • App-level composition (root, auth, scenes) → See axiom-design (skills/app-composition.md)
  • Drag/drop, sharing, copy/paste → See axiom-swift (skills/transferable-ref.md)
  • VoiceOver, Dynamic Type → /skill axiom-accessibility
  • UI test flakiness → /skill axiom-testing
  • UX dead ends, dismiss traps → Launch ux-flow-auditor agent
watchOS-specific patterns
  • Glanceable UI, watch navigation, Smart Stack widgets → See axiom-watchos

Conflict Resolution

axiom-swiftui vs axiom-performance: When UI is slow (e.g., "SwiftUI List slow"):

  1. Try axiom-swiftui FIRST — Domain-specific fixes (LazyVStack, view identity, @State optimization) often solve UI performance in 5 minutes
  2. Only use axiom-performance if domain fixes don't help — Profiling takes longer and may confirm what domain knowledge already knows

Decision Tree

dot
digraph swiftui {    start [label="SwiftUI issue" shape=ellipse];    what [label="What's wrong?" shape=diamond];
    start -> what;    what -> "skills/debugging.md" [label="view not updating"];    what -> "skills/nav.md" [label="navigation"];    what -> "skills/swiftui-performance.md" [label="slow/lag"];    what -> "skills/layout.md" [label="adaptive layout"];    what -> "skills/containers-ref.md" [label="stacks/grids/outlines"];    what -> "skills/architecture.md" [label="feature architecture"];    what -> "skills/animation-ref.md" [label="animations"];    what -> "skills/gestures.md" [label="gestures"];    what -> "skills/search-ref.md" [label="search"];    what -> "skills/toolbars.md" [label="toolbars / sheet buttons"];    what -> "skills/presentations.md" [label="sheets/detents/popovers"];    what -> "skills/26-ref.md" [label="iOS 26 features"];    what -> "skills/iphone-duo.md" [label="iPhone Duo / foldable"];    what -> "skills/previews.md" [label="slow previews / building good previews"];    what -> "skills/previews-ref.md" [label="preview API reference"];    what -> "skills/debugging.md" [label="preview crashes / won't load"];    what -> "skills/hot-reload.md" [label="hot reload / live editing"];    what -> "axiom-macos (skills/swiftui-differences.md)" [label="Table / .inspector\n(large-window density)"];    what -> "axiom-uikit (skills/uikit-bridging.md)" [label="UIKit interop"];    what -> "axiom-design (skills/app-composition.md)" [label="app-level (root, auth)"];    what -> "axiom-swift (skills/transferable-ref.md)" [label="drag/drop, sharing"];}

Automated Scanning

  • Architecture audit → Launch swiftui-architecture-auditor agent
  • Performance scan → Launch swiftui-performance-analyzer agent or /axiom:audit swiftui-performance
  • Navigation audit → Launch swiftui-nav-auditor agent or /axiom:audit swiftui-nav
  • Layout audit → Launch swiftui-layout-auditor agent or /axiom:audit swiftui-layout
  • UX flow audit → Launch ux-flow-auditor agent or /axiom:audit ux-flow
  • Liquid Glass scan → Launch liquid-glass-auditor agent or /axiom:audit liquid-glass (detects migration opportunities AND adoption-completeness gaps: variant discipline for media surfaces, glass-on-glass nesting, unstyled pre-26 fallbacks, semantic toolbar placement, Tab(role: .search), the UIDesignRequiresCompatibility opt-out; scores ADOPTED / PARTIAL / NOT ADOPTED)
  • TextKit scan → Launch textkit-auditor agent or /axiom:audit textkit (detects fallback triggers, glyph APIs that corrupt complex scripts, missing Writing Tools wiring, AND architectural gaps like missing fallback observation, SwiftUI wrappers dropping TextKit 2 properties, missing isWritingToolsActive guards; scores MODERN / MIXED / LEGACY)

Anti-Rationalization

ThoughtReality
"Simple SwiftUI layout, no need"SwiftUI layout has 12 gotchas. skills/layout.md covers all of them.
"I know how NavigationStack works"Navigation has state restoration, deep linking, and identity traps. skills/nav.md prevents 2-hour debugging.
"It's just a view not updating"View update failures have 4 root causes. skills/debugging.md diagnoses in 5 min.
"I'll just add .animation()"Animation issues compound. skills/animation-ref.md has the correct patterns.
"No architecture needed"Even small features benefit from separation. skills/architecture.md prevents refactoring debt.
"I know .searchable"Search has 6 gotchas. skills/search-ref.md covers all of them.
"I'll just add a Done button"Sheets without Cancel break the HIG (updated 2026-03-24). .cancellationAction / .confirmationAction produce HIG-correct placement automatically — skills/toolbars.md Pattern 2 has the rules.
"A sheet is a sheet, nothing to configure"Detents, compact adaptation, background interaction, and iOS 18 sizing decide how it behaves across window shapes. skills/presentations.md covers the adaptation traps (landscape sheets silently become full-screen covers).
"Previews are slow forever, I'll just use the simulator"Five concrete fixes in skills/previews.md. Rule 4 (auto-refresh off) is 30 seconds and often halves perceived slowness.
"@State is lazy in Xcode 27, I read the release notes"Only when the property is private/fileprivate and the deployment target is iOS 17 or later — below 17 the private case silently keeps the old eager behavior. skills/architecture.md has the gate, the three TN3211 breaks, and the one that compiles and is wrong at runtime.
"I'll just write a wrapper view for @State in this preview"@Previewable @State (Xcode 16+) eliminates that boilerplate. skills/previews-ref.md has the macro signature.
"I'll just rebuild and relaunch every time"Hot reload edits the running app in place, state preserved. skills/hot-reload.md has the InjectionNext + Inject setup and the verify-via-xclog loop.
"Duo is just a bigger iPhone; my layout already resizes"Bars move to the side, the fold divides the screen, and the outer display can't open windows. skills/iphone-duo.md covers what resizing alone misses.

Source and attribution

Source:charleswiltgen/axiomin.claude-plugin/plugins/axiom/skills/axiom-swiftuiat commite45d98f

License: MIT

Content belongs to its original authors. SourceWeft indexes it from a public repository.

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