New android Support Design Library, scroll tablayout offscreen not working -

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trying use new support design library. in layout want toolbar stay @ top of screen, have tablayout go off screen when user scrolls down. looks viewpager goes underneath appbarlayout. used blog post reference https://medium.com/ribot-labs/exploring-the-new-android-design-support-library-b7cda56d2c32

this layout, within viewpager holds fragments consist of recycler views

<?xml version="1.0" encoding="utf-8"?> <relativelayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@color/material_grey50" android:clickable="true">  <android.support.design.widget.coordinatorlayout     android:layout_width="match_parent"     android:layout_height="match_parent">      <android.support.v4.view.viewpager         android:id="@+id/pager"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:layout_below="@+id/tablayout" />   <android.support.design.widget.appbarlayout     android:layout_width="match_parent"     android:layout_height="wrap_content">       <android.support.v7.widget.toolbar         android:id="@+id/toolbar_list"         android:layout_width="match_parent"         android:layout_height="?attr/actionbarsize"         android:background="?attr/colorprimary"         android:theme="@style/themeoverlay.appcompat.dark.actionbar"          app:popuptheme="@style/themeoverlay.appcompat.light" />       <android.support.design.widget.tablayout         android:id="@+id/tablayout"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:layout_below="@+id/toolbar_list"         android:background="?attr/colorprimary"         android:scrollbars="horizontal"         android:theme="@style/themeoverlay.appcompat.dark.actionbar"         app:layout_scrollflags="scroll|enteralways"         app:tabgravity="center" />   </android.support.design.widget.appbarlayout>   <android.support.design.widget.floatingactionbutton     android:id="@+id/fab_post"     android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:layout_alignparentbottom="true"     android:layout_alignparentright="true"     android:layout_gravity="bottom|right"     android:layout_marginbottom="16dp"     android:layout_marginright="16dp"     android:elevation="3dp"     android:src="@drawable/ic_videocam_white_36dp"     app:backgroundtint="@color/accent"     app:fabsize="normal" />   </android.support.design.widget.coordinatorlayout>

don't forget set in viewpager:

app:layout_behavior="@string/appbar_scrolling_view_behavior"


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