samples/SupportEmojiDemos/src/main/res/layout/layout_config.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
  ~ Copyright (C) 2017 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
  ~
  ~      http://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.
  -->

<merge xmlns:android="http://schemas.android.com/apk/res/android"
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              android:orientation="horizontal">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">

        <Switch
            android:id="@+id/enable"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="EmojiCompat"
            android:layout_marginBottom="@dimen/spacing_small"/>

        <Switch
            android:id="@+id/replaceAll"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Replace All"
            android:layout_marginBottom="@dimen/spacing_small"/>

        <Switch
            android:id="@+id/useDownloadable"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Downloadable"
            android:layout_marginBottom="@dimen/spacing_small"/>

        <Switch
            android:id="@+id/indicator"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Indicator"
            android:layout_marginBottom="@dimen/spacing_small"/>

    </LinearLayout>

</merge>