samples/MediaRoutingDemo/src/main/res/layout/activity_settings.xml

<?xml version="1.0" encoding="utf-8"?><!-- Copyright (C) 2013 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.
-->

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto">

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

        <androidx.appcompat.widget.AppCompatButton
            android:id="@+id/open_system_routes"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@string/settings_activity_show_system_routes" />

        <Button
            android:id="@+id/go_to_route_listing_preference_button"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Route listing preference"/>

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:layout_margin="12dp"
            android:padding="4dp">

            <Switch
                android:id="@+id/show_this_phone_switch"
                android:layout_width="wrap_content"
                android:layout_height="match_parent"
                android:layout_alignParentEnd="true"
                android:layout_alignParentRight="true"
                android:layout_centerVertical="true" />

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentLeft="true"
                android:layout_alignParentStart="true"
                android:layout_centerVertical="true"
                android:gravity="center"
                android:text="Transfer to local Enabled" />

        </RelativeLayout>

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:layout_margin="12dp"
            android:padding="4dp">

            <Switch
                android:id="@+id/dynamic_routing_switch"
                android:layout_width="wrap_content"
                android:layout_height="match_parent"
                android:layout_alignParentEnd="true"
                android:layout_alignParentRight="true"
                android:layout_centerVertical="true" />

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentLeft="true"
                android:layout_alignParentStart="true"
                android:layout_centerVertical="true"
                android:gravity="center"
                android:text="Enable dynamic routing (For next routes only)" />

        </RelativeLayout>

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:layout_margin="12dp"
            android:padding="4dp">

            <Spinner
                android:id="@+id/dialog_spinner"
                android:layout_width="wrap_content"
                android:layout_height="match_parent"
                android:layout_alignParentEnd="true"
                android:layout_alignParentRight="true"
                android:layout_centerVertical="true" />

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentLeft="true"
                android:layout_alignParentStart="true"
                android:layout_centerVertical="true"
                android:gravity="center"
                android:text="Dialog Type" />

        </RelativeLayout>

        <androidx.recyclerview.widget.RecyclerView
            android:id="@+id/routes_recycler_view"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="1" />

    </LinearLayout>

    <com.google.android.material.floatingactionbutton.FloatingActionButton
        android:id="@+id/new_route_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentEnd="true"
        android:layout_alignParentRight="true"
        android:layout_margin="20dp"
        android:padding="0dp"
        app:srcCompat="@drawable/ic_add" />

</RelativeLayout>