Add snippet for dec jxr release.

Author: amyZepp

gradle/libs.versions.toml

@@ -29,9 +29,9 @@ androidx-test-junit = "1.3.0"
 androidx-window = "1.5.0"
 androidx-window-core = "1.5.0"
 androidx-window-java = "1.5.0"
-androidx-xr-arcore = "1.0.0-alpha07"
-androidx-xr-compose = "1.0.0-alpha08"
-androidx-xr-scenecore = "1.0.0-alpha08"
+androidx-xr-arcore = "1.0.0-alpha09"
+androidx-xr-compose = "1.0.0-alpha09"
+androidx-xr-scenecore = "1.0.0-alpha10"
 androidxHiltNavigationCompose = "1.3.0"
 appcompat = "1.7.1"
 arcorePlayServices = "1.0.0-alpha08"

xr/src/main/java/com/example/xr/compose/SceneCoreEntity.kt

@@ -0,0 +1,46 @@
+package com.example.xr.compose
+
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.unit.dp
+import androidx.xr.compose.platform.LocalSession
+import androidx.xr.compose.spatial.Subspace
+import androidx.xr.compose.subspace.SceneCoreEntity
+import androidx.xr.compose.subspace.SceneCoreEntitySizeAdapter
+import androidx.xr.compose.subspace.layout.SubspaceModifier
+import androidx.xr.compose.subspace.layout.offset
+import androidx.xr.runtime.math.IntSize2d
+import androidx.xr.runtime.math.Pose
+import androidx.xr.scenecore.SurfaceEntity
+
+@Composable
+fun SceneCoreEntityExample() {
+    val session = LocalSession.current
+    if (session !== null) {
+        // [START androidxr_compose_SceneCoreEntity]
+        Subspace {
+            SceneCoreEntity(
+                modifier = SubspaceModifier.offset(x = 50.dp),
+                factory = {
+                    SurfaceEntity.create(
+                        session = session,
+                        pose = Pose.Identity,
+                        stereoMode = SurfaceEntity.StereoMode.MONO
+                    )
+                },
+                update = { entity ->
+                    // compose state changes may be applied to the
+                    // SceneCore entity here.
+                    entity.stereoMode = SurfaceEntity.StereoMode.SIDE_BY_SIDE
+                },
+                sizeAdapter =
+                    SceneCoreEntitySizeAdapter({
+                        IntSize2d(it.width, it.height)
+                    }),
+            ) {
+                // Content here will be children of the SceneCoreEntity
+                // in the scene graph.
+            }
+        }
+        // [END androidxr_compose_SceneCoreEntity]
+    }
+}

xr/src/main/java/com/example/xr/compose/Subspace.kt

@@ -23,7 +23,6 @@ import androidx.activity.enableEdgeToEdge
 import androidx.compose.foundation.layout.Row
 import androidx.compose.runtime.Composable
 import androidx.xr.compose.platform.LocalSession
-import androidx.xr.compose.spatial.ApplicationSubspace
 import androidx.xr.compose.spatial.Subspace
 import androidx.xr.compose.subspace.SpatialPanel
 import androidx.xr.scenecore.scene
@@ -35,7 +34,7 @@ private class SubspaceActivity : ComponentActivity() {
         // [START androidxr_compose_SubspaceSetContent]
         setContent {
             // This is a top-level subspace
-            ApplicationSubspace {
+            Subspace {
                 SpatialPanel {
                     MyComposable()
                 }
@@ -59,7 +58,7 @@ private fun PrimaryPane() {
     // This is a nested subspace, because PrimaryPane is in a SpatialPanel
     // and that SpatialPanel is in a top-level Subspace
     Subspace {
-        ObjectInAVolume(true)
+        SpatialPanel {}
     }
 }
 // [END androidxr_compose_SubspaceComponents]