android/app/src/main/res/layout/activity_device_set_chooser.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".DeviceSetChooserActivity">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/device_set_list"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1" />

    <Button
        android:id="@+id/button_add_device_set"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/add_device_set" />

</LinearLayout>