display-glasses-with-jetpack-compose-glimmer

Create a projected Glasses Activity with `android:requiredDisplayCategory="xr_projected"`, add the `androidx.xr.glimmer:glimmer` dependency, and build UI with Glimmer components wrapped in GlimmerTheme. Launch it from your phone app using ProjectedContext.

Display glasses use additive displays where black renders as transparent, so Material's dark foreground tokens become invisible. Glimmer components automatically resolve content colors that remain legible against real-world backgrounds.

The absolute minimum readable text size is 18sp, equivalent to 0.6 degrees of visual angle at 1 meter. Anything smaller fails legibility checks, and thin or hairline font weights should be avoided due to shimmering on additive lenses.

Glimmer uses one-dimensional focus search mapped to the glasses touchpad for tap and swipe gestures. Set `isInitialFocusOnFocusableAvailable` to true in onCreate, avoid nested scrolling controls, and use System Back to dismiss temporary states.

Use a Stack when showing one item at a time or when items are of different types; use a List with a Title Chip when items are similar in type. Stacks must be bottom-aligned and 66.dp taller than the tallest item.

Standard Material 3 elevation and shadow modifiers are unsupported; you must use ShadowScope or DepthEffect tokens. Specific hardware device capabilities are not detailed, and pure black must never be used for icon tints since it renders transparent.