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hz-metavrx-layout-sdk

Build multi-window Meta Horizon OS experiences with the MetaVrx Layout SDK in Jetpack Compose or React Native. Covers framework selection, setup, anchoring, semantic offsets, window promotion, fallback, priority, lifecycle, and theming. Use for apps that need multiple app-owned panels without an immersive scene. Build path: Standard Android, including React Native; use hz-quest-verify-first if the path is unclear, and do not use this skill for immersive Spatial SDK scenes.

skills/hz-metavrx-layout-sdk/SKILL.md

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# MetaVrx Layout SDK

Use the Layout SDK when a Standard Android app needs multiple app-owned panels on Meta Horizon OS. It preserves the app's existing Android UI framework. Do not add Meta Spatial SDK unless the app needs an immersive scene, 3D entities, or full environment control.

## Choose the framework first

| Existing app UI | API style | Start here |
|---|---|---|
| Jetpack Compose | `SpatialScene`, `SpatialWindow`, `WindowModifier` | [Compose setup](references/compose-getting-started.md) and [Compose API](references/compose-api-reference.md) |
| React Native | `SpatialSceneProvider`, `SpatialWindow`, props and hooks | [React Native setup](references/react-native-getting-started.md) and [React Native API](references/react-native-api-reference.md) |

The app's UI framework dictates which set of references to continue with. The
Jetpack Compose and React Native APIs are intended to strive for behavioral and
conceptual parity across platforms.