Floating action button with CoordinatorLayout - android-recyclerview

Question

I using fragments in my app. I have base activity with hiding toolbar when content is scrolling. But is not working with this fragment. FAB is hiding ok but toolbar is not hiding when i scrolling. FAB and list not fitting bottom. How to do that? Thx.
Sorry for my English please.
Activity layout:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<android.support.design.widget.CoordinatorLayout
android:id="#+id/coordinator"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.design.widget.AppBarLayout
android:id="#+id/appBarLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
android:theme="#style/AppTheme.AppBarOverlay"
app:elevation="0dp">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:layout_scrollFlags="scroll|enterAlways">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
android:elevation="0dp"
app:layout_collapseMode="pin"
app:popupTheme="#style/AppTheme.PopupOverlay">
</android.support.v7.widget.Toolbar>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<FrameLayout
android:id="#+id/content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>
<android.support.design.widget.NavigationView
android:id="#+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
app:headerLayout="#layout/app_nav_header_main"
app:menu="#menu/main_drawer" />
</android.support.v4.widget.DrawerLayout>
Fragment layout:
<?xml version="1.0" encoding="utf-8"?>
<ViewFlipper xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/flipper"
android:layout_width="match_parent"
android:layout_height="match_parent">
<include
layout="#layout/layout_please_wait"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<android.support.design.widget.CoordinatorLayout
android:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v4.widget.SwipeRefreshLayout
android:id="#+id/refresh"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="5dp">
<android.support.v7.widget.RecyclerView
android:id="#+id/adsList"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</android.support.v4.widget.SwipeRefreshLayout>
<android.support.design.widget.FloatingActionButton
android:id="#+id/addAds"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|right"
android:src="#drawable/ic_action_new"
app:layout_anchor="#id/adsList"
app:layout_anchorGravity="bottom|right|end"
app:layout_behavior="sakh.com.utils.ScrollAwareFABBehavior"
app:useCompatPadding="true" />
</android.support.design.widget.CoordinatorLayout>
<include
layout="#layout/layout_no_internet"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<include
layout="#layout/layout_no_search_result"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</ViewFlipper>