android-ux

Touch targets must be at least 48x48dp with 8dp spacing between adjacent targets. Use IconButton, which enforces 48dp by default, or apply Modifier.minimumInteractiveComponentSize() to expand the tap area of smaller visual elements.

Score the screen across 10 categories: color tokens, typography, shape, elevation, components, layout, navigation, motion, accessibility, and theming consistency. Mark each as Pass, Partial, or Fail, then resolve all Partial and Fail items before shipping.

Yes, use WindowInfoTracker and FoldingFeature from Jetpack WindowManager to detect postures like tabletop and book mode. Never place interactive content across the hinge, and switch layouts based on fold orientation and state.

WCAG AA requires 4.5:1 contrast for body text and 3:1 for large text (18sp+ or 14sp+ bold) and UI components. Test ratios in both light and dark themes independently, and consider M3 contrast levels for user-controlled adjustment.

Hardcoded padding breaks across devices with different status bar heights, cutouts, and gesture navigation. Always consume the innerPadding provided by Scaffold or use WindowInsets APIs so content respects safe areas automatically.

Compose has no built-in reduced motion flag, so create a CompositionLocal that reads Settings.Global.ANIMATOR_DURATION_SCALE. When the user has disabled animations, skip or simplify transitions such as replacing slide animations with EnterTransition.None.