display-glasses-with-jetpack-compose-glimmer

Create a Projected Activity with the xr_projected display category, add the androidx.xr.glimmer:glimmer dependency, and wrap all UI in GlimmerTheme. Use Glimmer components like Card, Button, and List instead of Material components, with a pure black root background.

Jetpack Compose Glimmer is a Compose UI toolkit for building augmented Android XR experiences on display glasses. It provides components, theming, and depth behaviors optimized for transparent additive displays where black renders as fully transparent.

No. MaterialTheme and Material components must not be used because standard Material Text resolves to dark foreground tokens that render invisible on additive displays. Use GlimmerTheme and Glimmer components, which automatically manage content colors for glasses.

The project must target compileSdk 37 or higher. You also need the latest androidx.xr.glimmer:glimmer and androidx.xr.glimmer:glimmer-google-fonts dependencies declared in the project.

The absolute minimum readable text size is 18sp, corresponding to a 0.6 degree visual angle. Thin or Hairline font weights must be avoided because they cause shimmering and aliasing on additive AR lenses.

Input is one-dimensional through the glasses touchpad using tap and swipe gestures. Glimmer uses one-dimensional focus search, and you must set isInitialFocusOnFocusableAvailable to true in onCreate to enable automatic initial focus.