skills/ HoangNguyen0403/agent-skills-standard

common-mobile-ux-core

Enforce universal mobile UX principles for touch-first interfaces including touch targets, safe areas, and mobile-specific interaction patterns. Use when building mobile screens, handling touch interactions, or validating safe area compliance.

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Mobile UX Core

Priority: P0 (CRITICAL)

Guidelines

  • Touch Targets: Min 44x44pt (iOS) / 48x48dp (Android). Add padding if needed.
  • Safe Areas: Wrap content in SafeArea/WindowInsets. Avoid notches.
  • Interactions: Use active states (no hover). Haptic feedback (short).
  • Typography: Min 16sp body. Line height 1.5x.
  • Keyboards: Auto-scroll inputs. Set InputType (email/number) & Action.

Code Examples

  • Correct: IconButton(icon: Icon(Icons.close), padding: EdgeInsets.all(12))
  • Avoid: Icon(Icons.close, size: 16) (Touch target too small)

Review Workflow

  1. Test the smallest interactive element against 44pt iOS / 48dp Android.
  2. Test content, keyboard, and fixed actions with notch/home-indicator/window insets.
  3. Check pressed, loading, error, and disabled states; do not port desktop hover behavior.
  4. Verify platform conventions separately before calling the screen complete.

Anti-Patterns

  • No Hover Effects: Mobile no cursor; use pressed/active states instead
  • No Tiny Targets: All clickable elements must ≥44pt
  • No Fixed Bottoms: Always account for Home Indicator and Keyboard safe areas
  • No OS Mixing: Respect Material (Android) and Cupertino (iOS) conventions separately

Related Topics

mobile-accessibility | mobile-performance | flutter-design-system | react-native-dls

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