SwiftUI Debugging

Use this skill to turn SwiftUI performance complaints into a small evidence loop: identify what changed, confirm whether SwiftUI is recreating or merely re-evaluating views, then apply the narrowest fix.

Workflow

1. Reproduce or localize the symptom.

   • Search for the named view, model, list/grid, or modifier chain before editing.
   • Ask for a minimal reproduction only when the target view or interaction cannot be inferred from the repo.
   • Prefer a profiler trace, _printChanges() output, Console logs, or a clear interaction path over guesswork.

2. Choose the diagnostic path.

   • Unexpected body calls or noisy _printChanges(): read references/body-reevaluation.md.
   • State resets, repeated onAppear, weird animations, focus loss, or scroll resets: read references/view-identity.md.
   • Slow lists, grids, scroll views, or initial load with many items: read references/lazy-loading.md.
   • AnyView, object creation in body, expensive sorting/filtering, oversized images, or repeated state writes: read references/common-pitfalls.md.