<?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"
    android:orientation="vertical">

    <Spinner
        android:id="@+id/category_spinner"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
    </Spinner>

    <ListView
        android:id="@android:id/list"
        android:fastScrollEnabled="true"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
    </ListView>

</LinearLayout>