android - AppBarLayout is not responding to scroll in the fragment -

i using new android support design library. have followed demo on android developer blogspot except use fragment recyclerview instead of putting both in same xml.

here's activity_main.xml

<android.support.v4.widget.drawerlayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     xmlns:app="http://schemas.android.com/apk/res-auto"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:id="@+id/drawer_layout"     >      <android.support.design.widget.coordinatorlayout         android:layout_height="match_parent"         android:layout_width="match_parent">          <android.support.design.widget.appbarlayout             android:layout_width="match_parent"             android:layout_height="wrap_content">             <include layout="@layout/toolbar"/>          </android.support.design.widget.appbarlayout>        <framelayout           android:id="@+id/container"           android:layout_width="fill_parent"           android:layout_height="fill_parent"           app:layout_behavior="@string/appbar_scrolling_view_behavior"/>        </android.support.design.widget.coordinatorlayout>           <fragment             android:id="@+id/navigation_drawer"             android:layout_margintop="?android:attr/actionbarsize"             android:name="aungkyawpaing.yangonuniversity.fragments.navigationdrawerfragment"             android:layout_width="@dimen/navigation_drawer_width"             android:layout_height="match_parent"             android:layout_gravity="start|left"             tools:layout="@layout/fragment_navigation_drawer"/>  </android.support.v4.widget.drawerlayout> 

this toolbar.xml

<?xml version="1.0" encoding="utf-8"?> <android.support.v7.widget.toolbar     xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:app="http://schemas.android.com/apk/res-auto"     android:id="@+id/my_awesome_toolbar"     android:layout_width="match_parent"     android:layout_height="wrap_content"     android:layout_gravity="top"     android:background="?attr/colorprimary"     android:minheight="?attr/actionbarsize"     app:layout_scrollflags="scroll|enteralways"     app:popuptheme="@style/themeoverlay.appcompat.light"     app:theme="@style/themeoverlay.appcompat.dark.actionbar"/>   , fragment has recyclerview      <android.support.v7.widget.recyclerview             xmlns:android="http://schemas.android.com/apk/res/android"             xmlns:app="http://schemas.android.com/apk/res-auto"             android:id="@+id/department_list"             android:layout_width="match_parent"             android:layout_height="match_parent"         /> 

i have add latest support library dependency in gradle. have seen person saying doesn't work because used list view in fragment, i'm using recyclerview suggested.

okay, might looks stupid have add in dependency

compile 'com.android.support:recyclerview-v7:22.2.0'