iOS UI & Layout Standards

Priority: P0 (CRITICAL)

Implementation Guidelines

Auto Layout

• Code-Based Layout: Prefer programmatic layout using NSLayoutAnchor or SnapKit over Storyboards for better source control.
• Safe Area: Always respect view.safeAreaLayoutGuide.
• UIStackView: Use for linear layouts to reduce constraint complexity.

UIKit Best Practices

• View Lifecycle: Perform layout adjustments in viewWillLayoutSubviews or updateConstraints.
• Reusable Views: Extract complex UI into custom UIView subclasses.
• Image Optimization: Use SF Symbols for icons. Preferred vector (PDF/SVG) for custom assets.
• SwiftUI Bridge: Use UIViewRepresentable or UIViewControllerRepresentable to host UIKit in SwiftUI.

Human Interface Guidelines (HIG)