Add app bar scrolling view behavior to multiple views in CoordinatorLayout

You don't need a workaround or something strange. This behaviour is supported by the library. Just replace your LinearLayout by this and put it below the RecyclerView:

<android.support.v4.widget.NestedScrollView    android:layout_width="match_parent"    android:layout_height="wrap_content"    app:layout_behavior="@string/appbar_scrolling_view_behavior">    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:orientation="vertical"        android:gravity="center">        <Button            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:padding="15dp"            android:text="Button text"/>    </LinearLayout></android.support.v4.widget.NestedScrollView>

Also you will need to put this in your RecyclerView to show it behind the LinearLayout:

    android:paddingTop="30dp"    android:clipToPadding="false"

This is how it would look like:

<android.support.design.widget.CoordinatorLayout    xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res-auto"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"><android.support.design.widget.AppBarLayout    android:id="@+id/app_bar_layout"    android:layout_width="match_parent"    android:layout_height="@dimen/collapsible_app_bar_height"    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">    <android.support.design.widget.CollapsingToolbarLayout        android:id="@+id/collapsing_toolbar_layout"        android:layout_width="match_parent"        android:layout_height="match_parent"        android:background="@drawable/gradient_banner"        app:contentScrim="@color/background_content_frame"        app:layout_scrollFlags="scroll|exitUntilCollapsed">        <ImageView            android:id="@+id/image_header"            android:layout_width="match_parent"            android:layout_height="match_parent"            android:src="@drawable/some_image"            app:layout_collapseMode="parallax"/>        <android.support.v7.widget.Toolbar            android:id="@+id/collapsible_toolbar"            android:layout_width="match_parent"            android:layout_height="?attr/actionBarSize"            android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"            app:layout_collapseMode="pin"/>    </android.support.design.widget.CollapsingToolbarLayout></android.support.design.widget.AppBarLayout><android.support.v7.widget.RecyclerView    android:id="@+id/recycler_view"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:layout_marginTop="@dimen/slide_handle_height"    android:scrollbars="vertical"    app:layout_behavior="@string/appbar_scrolling_view_behavior"    android:paddingTop="30dp"    android:clipToPadding="false"/><android.support.v4.widget.NestedScrollView    android:layout_width="match_parent"    android:layout_height="wrap_content"    app:layout_behavior="@string/appbar_scrolling_view_behavior">    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:orientation="vertical"        android:gravity="center">        <Button            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:padding="15dp"            android:text="Button text"/>    </LinearLayout></android.support.v4.widget.NestedScrollView></android.support.design.widget.CoordinatorLayout>

This is not a nice design, but it is a solution. You can put a nicer Layout inside the LinearLayout to make it like Spotify.

Edit: Video added

This is a sticky header put in the middle between Toolbar and RecyclerView:

<Button    android:layout_width="wrap_content"    android:layout_height="wrap_content"    app:layout_anchor="@+id/app_bar_layout"    app:layout_anchorGravity="center|bottom"    android:text="Shuffle Play"/>

To avoid overlaping with the Toolbar you can set different heights to AppBarLayout and CollapsingToolbarLayout:

<android.support.design.widget.CoordinatorLayoutxmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"android:id="@+id/main_content"android:layout_width="match_parent"android:layout_height="match_parent"android:fitsSystemWindows="true"><android.support.design.widget.AppBarLayout    android:id="@+id/appbar"    android:layout_width="match_parent"    android:layout_height="240dp"    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"    android:fitsSystemWindows="true">    <android.support.design.widget.CollapsingToolbarLayout        android:id="@+id/collapsing_toolbar"        android:layout_width="match_parent"        android:layout_height="210dip"        android:background="?attr/colorPrimary"        app:layout_scrollFlags="scroll|exitUntilCollapsed"        android:fitsSystemWindows="true"        app:contentScrim="?attr/colorPrimary"        app:expandedTitleMarginStart="48dp"        app:expandedTitleMarginBottom="30dp"        app:expandedTitleMarginEnd="64dp">        <ImageView            android:id="@+id/backdrop"            android:layout_width="match_parent"            android:layout_height="match_parent"            android:scaleType="centerCrop"            android:fitsSystemWindows="true"            app:layout_collapseMode="parallax" />        <android.support.v7.widget.Toolbar            android:id="@+id/toolbar"            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><android.support.v7.widget.RecyclerView    android:id="@+id/recycler_view"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:layout_marginTop="@dimen/slide_handle_height"    android:scrollbars="vertical"    app:layout_behavior="@string/appbar_scrolling_view_behavior"/><Button    android:layout_width="wrap_content"    android:layout_height="wrap_content"    app:layout_anchor="@id/appbar"    app:layout_anchorGravity="center|bottom"    android:text="Shuffle Play"/></android.support.design.widget.CoordinatorLayout>

Video demo:

Also, you can set a height to the Toolbarbut will need to make a custom title with a custom behaviour like this proyect CoordinatorLayoutExample. I made it with a custom title without behavior:

<android.support.design.widget.CoordinatorLayoutxmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"android:id="@+id/main_content"android:layout_width="match_parent"android:layout_height="match_parent"android:fitsSystemWindows="true"><android.support.design.widget.AppBarLayout    android:id="@+id/appbar"    android:layout_width="match_parent"    android:layout_height="240dp"    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"    android:fitsSystemWindows="true">    <android.support.design.widget.CollapsingToolbarLayout        android:id="@+id/collapsing_toolbar"        android:layout_width="match_parent"        android:layout_height="match_parent"        android:background="?attr/colorPrimary"        app:layout_scrollFlags="scroll|exitUntilCollapsed"        android:fitsSystemWindows="true"        app:collapsedTitleTextAppearance="@style/TransparentText"        app:expandedTitleTextAppearance="@style/TransparentText"        app:contentScrim="?attr/colorPrimary">        <ImageView            android:id="@+id/backdrop"            android:layout_width="match_parent"            android:layout_height="match_parent"            android:scaleType="centerCrop"            android:fitsSystemWindows="true"            app:layout_collapseMode="parallax" />        <android.support.v7.widget.Toolbar            android:id="@+id/toolbar"            android:layout_height="80dp"            android:layout_width="match_parent"            android:minHeight="?attr/actionBarSize"            android:gravity="top"            app:popupTheme="@style/ThemeOverlay.AppCompat.Light"            app:layout_collapseMode="pin" >            <TextView                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:text="Title"                android:textSize="20sp"                android:textColor="@android:color/white"/>        </android.support.v7.widget.Toolbar>    </android.support.design.widget.CollapsingToolbarLayout></android.support.design.widget.AppBarLayout><android.support.v7.widget.RecyclerView    android:id="@+id/recycler_view"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:layout_marginTop="@dimen/slide_handle_height"    android:scrollbars="vertical"    app:layout_behavior="@string/appbar_scrolling_view_behavior"/><Button    android:layout_width="wrap_content"    android:layout_height="wrap_content"    app:layout_anchor="@id/appbar"    app:layout_anchorGravity="center|bottom"    android:text="Shuffle Play"/></android.support.design.widget.CoordinatorLayout>

Styles:

<style name="TransparentText" parent="@android:style/TextAppearance">    <item name="android:textColor">#00000000</item></style>

Video demo:

After some trial and error, this is the condensed version of the layout that ended up working for me:

<android.support.design.widget.CoordinatorLayout    xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res-auto"    xmlns:tools="http://schemas.android.com/tools"    android:id="@+id/coordinator_layout"    android:layout_width="match_parent"    android:layout_height="match_parent"><android.support.design.widget.AppBarLayout    android:id="@+id/app_bar_layout"    android:layout_width="match_parent"    android:layout_height="@dimen/collapsible_app_bar_height"    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">    <android.support.design.widget.CollapsingToolbarLayout        android:id="@+id/collapsing_toolbar_layout"        android:layout_width="match_parent"        android:layout_height="match_parent"        app:contentScrim="@color/background_content_frame"        app:layout_scrollFlags="scroll|exitUntilCollapsed">        <ImageView            android:id="@+id/image_header"            android:layout_width="match_parent"            android:layout_height="match_parent"            android:layout_gravity="center_horizontal"            android:layout_marginBottom="@dimen/button_bar_height"            android:scaleType="centerCrop"            android:background="@android:color/transparent"            android:src="@drawable/default_header"            android:contentDescription="@string/description_content_image"            app:layout_collapseMode="parallax"/>        <ImageView            android:id="@+id/image_header_gradient"            android:layout_width="match_parent"            android:layout_height="match_parent"            android:layout_marginBottom="@dimen/button_bar_height"            android:src="@drawable/scrim_top_bottom_banner"            app:layout_collapseMode="parallax"            tools:ignore="ContentDescription"/>        <android.support.v7.widget.Toolbar            android:id="@+id/collapsible_toolbar"            android:layout_width="match_parent"            android:layout_height="104dp"            android:minHeight="?attr/actionBarSize"            android:gravity="top"            android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"            app:contentInsetStart="0dp"            app:titleMargins="0dp"            app:layout_collapseMode="pin"/>        <RelativeLayout            android:layout_width="match_parent"            android:layout_height="wrap_content"            android:layout_marginStart="@dimen/landing_header_button_margin_horizontal"            android:layout_marginEnd="@dimen/landing_header_button_margin_horizontal"            android:layout_marginBottom="@dimen/button_bar_height"            android:layout_gravity="bottom"            android:gravity="center_vertical"            app:layout_collapseMode="parallax">            <Button                android:id="@+id/button_one"                android:layout_alignParentStart="true"                android:drawableStart="@drawable/selector_one"                android:textColor="@color/alabaster_white"                android:visibility="gone"                style="@style/Button.TextCount"/>            <Button                android:id="@+id/button_two"                android:layout_alignParentEnd="true"                android:layout_gravity="end"                android:drawableStart="@drawable/selector_two"                android:textColor="@color/alabaster_white"                android:visibility="gone"                style="@style/Button.TextCount"/>        </RelativeLayout>        <LinearLayout            android:layout_width="match_parent"            android:layout_height="@dimen/button_bar_height"            android:layout_gravity="bottom"            android:gravity="center_vertical"            android:orientation="horizontal"            android:background="@color/slide_handle">            <!-- three buttons -->        </LinearLayout>    </android.support.design.widget.CollapsingToolbarLayout></android.support.design.widget.AppBarLayout><android.support.v7.widget.RecyclerView    android:id="@+id/recycler_view"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:scrollbars="vertical"    app:layout_behavior="@string/appbar_scrolling_view_behavior"/>