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Animation Patternsby rshankras

Animation Patterns Skill.

Choose and review SwiftUI animation APIs for native interfaces.

  • SwiftUI
  • Apple Platforms
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Source Review · animation-patternsSKILL.md
Task Choose and review SwiftUI animation APIs for native interfaces. Produces A SwiftUI animation pattern selected for the actual state change. Before You Start It does not provide a CSS, browser or video-rendering workflow.
Editorial summary · source reviewed 2026-11-02 · not a generated example

01 What It Does

Choose and review SwiftUI animation APIs for native interfaces

Review SwiftUI springs, phase and keyframe animators, navigation transitions and reduced-motion behavior against your project's SDK.

Source-based workflowNot an execution benchmark

The Working Approach

animation-patterns is a SwiftUI reference for choosing and reviewing animation APIs. It routes state changes, sequenced phases, property keyframes, view insertion and navigation transitions into different implementation patterns. It also covers SF Symbol effects and geometry-driven visual treatments.

The source focuses on API-shape mistakes that can derail implementation: mixing spring parameter generations, selecting the wrong transition scope or confusing shared geometry with navigation zoom. Platform availability and the project's deployment target remain part of the decision, alongside reduced-motion behavior and inexpensive per-frame work.

Expected Deliverables

  • A SwiftUI animation pattern selected for the actual state change.
  • A targeted API-correctness review and correction guidance.
  • Accessibility, deployment-target and per-frame performance checks.
See the Example Brief

From Brief to Review

  1. 01
    Classify the animation

    Distinguish a state tween, phase sequence, multi-property timeline, insertion/removal or navigation transition before choosing an API.

  2. 02
    Check API generation and scope

    Match parameter names and closures to the installed SDK and deployment target. Verify that the animated view actually participates in the intended state change.

  3. 03
    Review interaction and cost

    Check interruption, reduced motion, completion behavior and expensive work inside per-frame closures. Exercise the actual UI in its target environment.

02 When to Use It

When to Use It

It does not provide a CSS, browser or video-rendering workflow.

A Good Fit

  • SwiftUI animation code fails or behaves oddlyThe source is organized around common API mistakes and a task-based routing tree.
  • A native transition needs the right scopeIt distinguishes local view geometry from navigation-driven transitions.

Limits to Check

  • This is native Apple guidanceIt does not provide a CSS, browser or video-rendering workflow.
  • Availability must be confirmedThe upstream table is a source snapshot; current SDK declarations and the project's deployment target govern implementation.

Bring These Inputs

  • SwiftUI codeProvide the affected view, state variables and animation modifiers.
  • Platform constraintsState the deployment target and installed SDK or Xcode version.
  • Desired behaviorDescribe the trigger, intermediate motion, final state and reduced-motion expectation.

03 Decisions That Matter

Decisions That Matter

  1. Correct API selection

    The decision tree separates superficially similar animation tasks.

  2. Fewer signature mistakes

    Spring families and animator closure shapes receive explicit attention.

  3. Cheap frame updates

    The review flags work that should not repeat inside rendering closures.

04 Try a Focused Brief

Try a Focused Brief

The example brief below has not been tested. Check the skill’s setup before using it.

Review the Source and Setup

Provide the affected view, state variables and animation modifiers.

Upstream Source File
https://github.com/rshankras/claude-code-apple-skills/blob/9ffb83138209057875698dd11c1720c657c47a92/skills/design/animation-patterns/SKILL.md

The reference below opens the upstream instructions. Review the repository setup before using them; it is not an installation command.

Start With One Deliverable

Adapt the scope, source material and constraints in this brief before running the skill.

Example Brief
Use animation-patterns to review the SwiftUI code for my expandable summary card and its navigation into a detail view. Check the project's deployment target before selecting APIs. Keep the card's local expansion separate from the navigation transition, and verify that spring parameters belong to one supported API generation. Preserve the existing state model. Add a reduced-motion alternative that keeps the result understandable, and identify formatting or allocation work inside per-frame closures. Deliver targeted corrections and explain how to test repeated activation, completion and the detail-to-list return.

Inspect the Result

Check the actual output against these observable criteria.

  • Confirm API signatures against the project's SDK and deployment target.
  • Test state insertion, navigation scope and repeated activation.
  • Inspect reduced motion and avoid heavy work in per-frame closures.

OpenDesign provides a local design workspace for coding agents. This listing does not mean the skill is bundled or that its external tools, credentials and software dependencies are included.

Download OpenDesignRead the Quickstart

05 Source and License

Source and License

This page describes the pinned source revision linked below. Upstream behavior and requirements can change.

Source Owner
rshankras
Repository
rshankras/claude-code-apple-skills
Skill File
SKILL.md
License
MIT
Reviewed Snapshot
2026-11-02 · 9ffb83138209
Editorial Source Summary
Choose and review SwiftUI animation APIs for native interfaces.

Original summary by OpenDesign, based on the linked source. Repository stars are a dated popularity signal, not skill usage or a quality score.

06 Questions Before You Start

Questions Before You Start

Is a local geometry transition the same as navigation zoom?

The source treats them as separate tasks with different APIs and scopes. Choose based on whether the transition occurs within a view or across navigation.

Can spring parameter names be mixed?

The source highlights that older and newer spring configuration families use different parameter combinations. Use one supported signature consistently.

Does it implement web animations?

No. Its scope is SwiftUI and related native Apple animation patterns, with version and accessibility checks for that environment.

OpenDesign

Keep Your Brief and Design Work Together.

Keep your brief, source material and design work together in a local workspace. Check the skill’s own setup before adding it to your workflow.

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Upstream Source File
https://github.com/rshankras/claude-code-apple-skills/blob/9ffb83138209057875698dd11c1720c657c47a92/skills/design/animation-patterns/SKILL.md