Android
```kotlin
public interface SpatialExternalSurfaceScope
```
[SpatialExternalSurfaceScope](/jetpack-compose/androidx.xr.compose/compose/interfaces/SpatialExternalSurfaceScope) is a scoped environment that provides the [Surface](/jetpack-compose/androidx.compose.material/material/components/Surface) associated with
a [SpatialExternalSurface](/jetpack-compose/androidx.xr.compose/compose/composable-functions/SpatialExternalSurface)
## Functions
onSurfaceCreated
```kotlin
public fun onSurfaceCreated(onSurfaceCreated: (Surface) -> Unit)
```
Invoked only one time when the Surface is created. This will execute before any layout or
modifiers are computed.
onSurfaceDestroyed
```kotlin
public fun onSurfaceDestroyed(onSurfaceDestroyed: (Surface) -> Unit)
```
Invoked when the Composable and its associated [Surface](/jetpack-compose/androidx.compose.material/material/components/Surface) are destroyed.