activityCategories.axml

<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/layoutRoot"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <include
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        layout="@layout/includeAppBar"/>

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/list"
        app:layout_behavior="@string/appbar_scrolling_view_behavior"
        android:visibility="invisible"
        android:scrollbars="vertical"
        android:clipToPadding="false"
        android:paddingTop="10dp"
        android:paddingBottom="80dp"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>

    <LinearLayout
        android:id="@+id/layoutEmptyState"
        android:orientation="vertical"
        android:gravity="center"
        android:visibility="invisible"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_below="@id/toolbar">

        <ImageView
            android:layout_width="64dp"
            android:layout_height="64dp"
            android:layout_gravity="center"
            android:src="@drawable/big_ic_category"/>

        <com.google.android.material.textview.MaterialTextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:gravity="center"
            android:paddingEnd="32dp"
            android:paddingStart="32dp"
            android:textSize="24dp"
            android:layout_marginTop="22dp"
            android:textAppearance="?attr/textAppearanceHeadline5"
            android:text="@string/noCategoriesTitle"/>

        <com.google.android.material.textview.MaterialTextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:gravity="center"
            android:paddingEnd="32dp"
            android:paddingStart="32dp"
            android:layout_marginTop="12dp"
            android:textAppearance="?attr/textAppearanceSubtitle2"
            android:text="@string/noCategoriesMessage"/>
    </LinearLayout>

    <com.google.android.material.floatingactionbutton.FloatingActionButton
        android:id="@+id/buttonAdd"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|end"
        android:layout_margin="16dp"
        app:srcCompat="@drawable/baseline_add_24"/>

</androidx.coordinatorlayout.widget.CoordinatorLayout>