Migrate snippets from "Develop UI for Android Views-based Apps"

Author: devbridie

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

@@ -0,0 +1,92 @@
+/*
+ * Copyright 2025 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.xr.compose
+
+import android.content.Context
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.activity.ComponentActivity
+import androidx.compose.material3.Text
+import androidx.compose.ui.platform.ComposeView
+import androidx.compose.ui.platform.ViewCompositionStrategy
+import androidx.compose.ui.unit.dp
+import androidx.fragment.app.Fragment
+import androidx.xr.compose.platform.setSubspaceContent
+import androidx.xr.compose.subspace.SpatialPanel
+import androidx.xr.compose.subspace.layout.SubspaceModifier
+import androidx.xr.compose.subspace.layout.depth
+import androidx.xr.compose.subspace.layout.height
+import androidx.xr.compose.subspace.layout.width
+import androidx.xr.scenecore.Dimensions
+import androidx.xr.scenecore.PanelEntity
+import androidx.xr.scenecore.Session
+import com.example.xr.R
+
+private class MyCustomView(context: Context) : View(context)
+
+private class ActivityWithSubspaceContent : ComponentActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        // [START androidxr_compose_ActivityWithSubspaceContent]
+        setSubspaceContent {
+            SpatialPanel(
+                view = MyCustomView(this),
+                modifier = SubspaceModifier.height(500.dp).width(500.dp).depth(25.dp)
+            )
+        }
+        // [END androidxr_compose_ActivityWithSubspaceContent]
+    }
+}
+
+private class FragmentWithComposeView() : Fragment() {
+    // [START androidxr_compose_FragmentWithComposeView]
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View {
+        val view = inflater.inflate(R.layout.example_fragment, container, false)
+        view.findViewById<ComposeView>(R.id.compose_view).apply {
+            // Dispose of the Composition when the view's LifecycleOwner
+            // is destroyed
+            setViewCompositionStrategy(ViewCompositionStrategy.DisposeOnViewTreeLifecycleDestroyed)
+            setContent {
+                // In Compose world
+                SpatialPanel(SubspaceModifier.height(500.dp).width(500.dp)) {
+                    Text("Spatial Panel with Orbiter")
+                }
+            }
+        }
+        return view
+    }
+    // [END androidxr_compose_FragmentWithComposeView]
+}
+
+fun ComponentActivity.PanelEntityWithView(xrSession: Session) {
+    // [START androidxr_compose_PanelEntityWithView]
+    val panelContent = MyCustomView(this)
+    val panelEntity = PanelEntity.create(
+        session = xrSession,
+        view = panelContent,
+        surfaceDimensionsPx = Dimensions(500f, 500f),
+        dimensions = Dimensions(1f, 1f, 1f),
+        name = "panel entity"
+    )
+    // [END androidxr_compose_PanelEntityWithView]
+}

xr/src/main/res/layout/example_fragment.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+<androidx.compose.ui.platform.ComposeView
+    android:id="@+id/compose_view"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content" />
+</LinearLayout>