<?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"

     xmlns:tools="http://schemas.android.com/tools"

     android:layout_width="match_parent"

     android:layout_height="match_parent"

     android:fitsSystemWindows="true"

     tools:context="com.eve.coordinatorlayoutsample.ScrollingActivity">

     <android.support.design.widget.AppBarLayout

         android:id="@+id/app_bar"

         android:layout_width="match_parent"

         android:layout_height="@dimen/app_bar_height"

         android:fitsSystemWindows="true"

         android:theme="@style/AppTheme.AppBarOverlay">

         <android.support.design.widget.CollapsingToolbarLayout

             android:id="@+id/toolbar_layout"

             android:layout_width="match_parent"

             android:layout_height="match_parent"

             android:fitsSystemWindows="true"

             app:contentScrim="?attr/colorPrimary"

             app:layout_scrollFlags="scroll|exitUntilCollapsed">

             <android.support.v7.widget.Toolbar

                 android:id="@+id/toolbar"

                 android:layout_width="match_parent"

                 android:layout_height="?attr/actionBarSize"

                 app:layout_collapseMode="pin"

                 app:popupTheme="@style/AppTheme.PopupOverlay" />

             <ImageView

                 android:src="@mipmap/bird"

                 app:layout_scrollFlags="scroll|enterAlways|enterAlwaysCollapsed"

                 android:layout_width="match_parent"

                 android:layout_height="match_parent"

                 android:scaleType="centerCrop"

                 app:layout_collapseMode="parallax"

                 android:minHeight="?attr/actionBarSize"/>

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

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

     <include layout="@layout/content_scrolling" />

     <android.support.design.widget.FloatingActionButton

         android:id="@+id/fab"

         android:layout_width="wrap_content"

         android:layout_height="wrap_content"

         android:layout_margin="@dimen/fab_margin"

         app:layout_anchor="@id/app_bar"

         app:layout_anchorGravity="bottom|end"

         app:srcCompat="@android:drawable/ic_dialog_email" />

 </android.support.design.widget.CoordinatorLayout>

 <?xml version="1.0" encoding="utf-8"?>

 <android.support.v4.widget.NestedScrollView 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"

     app:layout_behavior="@string/appbar_scrolling_view_behavior"

     tools:context="com.eve.coordinatorlayoutsample.ScrollingActivity"

     tools:showIn="@layout/activity_scrolling">

     <TextView

         android:layout_width="wrap_content"

         android:layout_height="wrap_content"

         android:layout_margin="@dimen/text_margin"

         android:text="@string/large_text" />

 </android.support.v4.widget.NestedScrollView>

 public class ScrollingActivity extends AppCompatActivity {

     @Override

     protected void onCreate(Bundle savedInstanceState) {

         super.onCreate(savedInstanceState);

         setContentView(R.layout.activity_scrolling);

         Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);

         setSupportActionBar(toolbar);

         FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);

         fab.setOnClickListener(new View.OnClickListener() {

             @Override

             public void onClick(View view) {

                 Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)

                         .setAction("Action", null).show();

             }

         });

     }

 }