Migrate Compose touch and input snippets

compose/snippets/src/main/java/com/example/compose/snippets/touchinput/gestures/GesturesSnippets.kt

@@ -19,6 +19,9 @@
 package com.example.compose.snippets.touchinput.gestures
 
 import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
 import androidx.activity.ComponentActivity
 import androidx.compose.foundation.MutatePriority
 import androidx.compose.foundation.background
@@ -69,11 +72,13 @@ import androidx.compose.material.icons.filled.Settings
 import androidx.compose.material.rememberSwipeableState
 import androidx.compose.material.swipeable
 import androidx.compose.material3.Button
+import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.Icon
 import androidx.compose.material3.IconButton
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Surface
 import androidx.compose.material3.Text
+import androidx.compose.material3.TopAppBar
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.annotation.FrequentlyChangingValue
@@ -113,6 +118,15 @@ import androidx.compose.ui.unit.sp
 import androidx.compose.ui.util.fastCoerceIn
 import androidx.compose.ui.util.fastRoundToInt
 import androidx.compose.ui.util.lerp
+import androidx.compose.ui.viewinterop.AndroidView
+import androidx.core.view.ViewCompat
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import androidx.recyclerview.widget.RecyclerView.Adapter
+import androidx.recyclerview.widget.RecyclerView.VERTICAL
+import androidx.recyclerview.widget.RecyclerView.ViewHolder
+import com.example.compose.snippets.R
+import com.google.android.material.bottomsheet.BottomSheetDialogFragment
 import kotlin.math.abs
 import kotlin.math.roundToInt
 import kotlinx.coroutines.CoroutineScope
@@ -981,3 +995,152 @@ fun NestedScrollSample() {
     }
     // [END android_compose_touchinput_gestures_nestedscrolldisabled]
 }
+
+@OptIn(ExperimentalMaterial3Api::class)
+// [START android_compose_touchinput_scroll_nested_scroll_interop_compose_parent]
+@Composable
+private fun NestedScrollInteropComposeParentWithAndroidChildExample() {
+    val toolbarHeightPx = with(LocalDensity.current) { ToolbarHeight.roundToPx().toFloat() }
+    val toolbarOffsetHeightPx = remember { mutableStateOf(0f) }
+
+    // Sets up the nested scroll connection between the Box composable parent
+    // and the child AndroidView containing the RecyclerView
+    val nestedScrollConnection = remember {
+        object : NestedScrollConnection {
+            override fun onPreScroll(available: Offset, source: NestedScrollSource): Offset {
+                // Updates the toolbar offset based on the scroll to enable
+                // collapsible behaviour
+                val delta = available.y
+                val newOffset = toolbarOffsetHeightPx.value + delta
+                toolbarOffsetHeightPx.value = newOffset.coerceIn(-toolbarHeightPx, 0f)
+                return Offset.Zero
+            }
+        }
+    }
+
+    Box(
+        Modifier
+            .fillMaxSize()
+            .nestedScroll(nestedScrollConnection)
+    ) {
+        TopAppBar(
+            title = {},
+            modifier = Modifier
+                .height(ToolbarHeight)
+                .offset { IntOffset(x = 0, y = toolbarOffsetHeightPx.value.roundToInt()) }
+        )
+
+        AndroidView(
+            { context ->
+                LayoutInflater.from(context)
+                    .inflate(R.layout.view_in_compose_nested_scroll_interop, null).apply {
+                        with(findViewById<RecyclerView>(R.id.main_list)) {
+                            layoutManager = LinearLayoutManager(context, VERTICAL, false)
+                            adapter = NestedScrollInteropAdapter()
+                        }
+                    }.also {
+                        // Nested scrolling interop is enabled when
+                        // nested scroll is enabled for the root View
+                        ViewCompat.setNestedScrollingEnabled(it, true)
+                    }
+            },
+            // ...
+        )
+    }
+}
+
+private class NestedScrollInteropAdapter :
+    Adapter<NestedScrollInteropAdapter.NestedScrollInteropViewHolder>() {
+    val items = (1..10).map { it.toString() }
+
+    override fun onCreateViewHolder(
+        parent: ViewGroup,
+        viewType: Int
+    ): NestedScrollInteropViewHolder {
+        return NestedScrollInteropViewHolder(
+            LayoutInflater.from(parent.context)
+                .inflate(R.layout.list_item, parent, false)
+        )
+    }
+
+    override fun onBindViewHolder(holder: NestedScrollInteropViewHolder, position: Int) {
+        // ...
+    }
+
+    class NestedScrollInteropViewHolder(view: View) : ViewHolder(view) {
+        fun bind(item: String) {
+            // ...
+        }
+    }
+    // [START_EXCLUDE]
+    override fun getItemCount(): Int = items.size
+    // [END_EXCLUDE]
+}
+// [END android_compose_touchinput_scroll_nested_scroll_interop_compose_parent]
+
+// [START android_compose_touchinput_scroll_view_in_compose_interop]
+@Composable
+fun ViewInComposeNestedScrollInteropExample() {
+    Box(
+        Modifier
+            .fillMaxSize()
+            .scrollable(
+                rememberScrollableState {
+                    // View component deltas should be reflected in Compose
+                    // components that participate in nested scrolling
+                    it
+                },
+                Orientation.Vertical
+            )
+    ) {
+        AndroidView(
+            { context ->
+                LayoutInflater.from(context)
+                    .inflate(R.layout.list_item, null)
+                    .apply {
+                        // Nested scrolling interop is enabled when
+                        // nested scroll is enabled for the root View
+                        ViewCompat.setNestedScrollingEnabled(this, true)
+                    }
+            }
+        )
+    }
+}
+// [END android_compose_touchinput_scroll_view_in_compose_interop]
+
+// [START android_compose_touchinput_scroll_bottom_sheet_interop]
+class BottomSheetFragment : BottomSheetDialogFragment() {
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View {
+        val rootView: View = inflater.inflate(R.layout.fragment_bottom_sheet, container, false)
+
+        rootView.findViewById<ComposeView>(R.id.compose_view).apply {
+            setContent {
+                val nestedScrollInterop = rememberNestedScrollInteropConnection()
+                LazyColumn(
+                    Modifier
+                        .nestedScroll(nestedScrollInterop)
+                        .fillMaxSize()
+                ) {
+                    item {
+                        Text(text = "Bottom sheet title")
+                    }
+                    items(10) {
+                        Text(
+                            text = "List item number $it",
+                            modifier = Modifier.fillMaxWidth()
+                        )
+                    }
+                }
+            }
+            return rootView
+        }
+    }
+}
+// [END android_compose_touchinput_scroll_bottom_sheet_interop]
+
+private val ToolbarHeight = 48.dp

compose/snippets/src/main/res/layout/fragment_bottom_sheet.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright 2026 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.
+-->
+<FrameLayout 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="match_parent"
+        android:layout_height="match_parent" />
+</FrameLayout>

compose/snippets/src/main/res/layout/list_item.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright 2026 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.
+-->
+<TextView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content" />

compose/snippets/src/main/res/layout/view_in_compose_nested_scroll_interop.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright 2026 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.
+-->
+<androidx.recyclerview.widget.RecyclerView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/main_list"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent" />