Expandable toolbar

fragment_order_list.xml

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

    <android.support.design.widget.AppBarLayout
        android:id="@+id/appbar"
        android:layout_width="match_parent"
        android:layout_height="190dp"
        android:fitsSystemWindows="true"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

    <android.support.design.widget.CollapsingToolbarLayout
        android:layout_width="match_parent"
        app:contentScrim="?attr/colorPrimaryDark"
        android:layout_height="match_parent"
        android:id="@+id/collapsing_toolbar"
        app:layout_scrollFlags="scroll|exitUntilCollapsed">
        <ImageView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:scaleType="centerCrop"
            android:src="@drawable/wallpaper_dashboard"/>
        <LinearLayout
            android:layout_width="match_parent"
            android:background="#cc333333"
            android:orientation="vertical"
            app:layout_scrollFlags="scroll|enterAlways|enterAlwaysCollapsed"
            app:layout_collapseMode="parallax"
            android:paddingBottom="20dp"
            android:layout_height="match_parent">
            <RelativeLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:orientation="horizontal">

                <com.feresr.restapp.RoundedImageView
                    android:id="@+id/waiter_picture"
                    android:layout_width="80dp"
                    android:layout_height="80dp"
                    android:src="@drawable/ic_waiter"
                    android:layout_centerVertical="true"
                    android:layout_marginLeft="16dp"
                    android:layout_marginRight="16dp" />

                <TextView
                    android:id="@+id/waiter_name"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_centerVertical="true"
                    android:layout_toRightOf="@id/waiter_picture"
                    android:fontFamily="sans-serif"
                    android:text="Fernando Raviola"
                    android:textColor="@color/lightPrimary"
                    android:textSize="38sp" />

                <TextView
                    android:id="@+id/waiter_username"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_below="@id/waiter_name"
                    android:layout_marginTop="-5dp"
                    android:layout_toRightOf="@id/waiter_picture"
                    android:fontFamily="sans-serif-light"
                    android:text="feresr"
                    android:textColor="@color/secondaryText"
                    android:textSize="16sp"
                    android:visibility="gone" />

            </RelativeLayout>

        </LinearLayout>
        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            app:layout_scrollFlags="scroll|enterAlways"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
            app:layout_collapseMode="pin" />


    </android.support.design.widget.CollapsingToolbarLayout>
    </android.support.design.widget.AppBarLayout>

    <RelativeLayout
        android:id="@+id/empty_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_behavior="@string/appbar_scrolling_view_behavior"

        android:gravity="center">

        <ImageView
            android:id="@+id/empty_icon"
            android:layout_width="100dp"
            android:alpha=".5"
            android:layout_height="100dp"

            android:layout_centerHorizontal="true"
            android:src="@drawable/pizza_icon" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_below="@id/empty_icon"
            android:layout_centerHorizontal="true"
            android:layout_marginTop="14dp"
            android:gravity="center"
            android:text="@string/no_orders" />
    </RelativeLayout>
    <android.support.v7.widget.RecyclerView
        android:id="@+id/recyclerview"
        app:layout_behavior="@string/appbar_scrolling_view_behavior"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:visibility="gone" />
    </android.support.design.widget.CoordinatorLayout>