<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:background="#eeeeee"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar_pdfThumb"
        android:background="@color/reader_top_toolbar_bg"
        app:navigationIcon="@drawable/selector_arrow_back_black_blue_24dp"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        android:elevation="4dp"
        android:minHeight="?attr/actionBarSize"
        android:layout_width="0dp"
        android:layout_height="wrap_content">
    </android.support.v7.widget.Toolbar>

    <android.support.v7.widget.RecyclerView
        android:id="@+id/id_recyclerview"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:cacheColorHint="@null"
        android:layout_marginTop="4dp"
        android:padding="2dp"
        app:layout_constraintTop_toBottomOf="@id/toolbar_pdfThumb"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        />
</android.support.constraint.ConstraintLayout>