In the below example I have created Collapsing Toolbar function. Here I have created CoordinatorLayout and created all layout in CoordinatorLayout. Now I have added AppBarLayout, CollapsingToolbarLayout, ImageView, Toolbar, RecyclerView and FloatingActionButton. Now I have created CardView.xml layout here I have added CardView. Next step I have created CardAdapter class for using recyclerview & cardview. In cardAdapter I have also used Toast function to get item Position. In next step I have created Collepse class for set recycler view item name and id. In MainActivity I have used setOnClickListener for floatingActionButton. You can see below program it will clearly describe How to create CollapsingToolbar function.

Step(1)-main_activity.xml layout-

<android.support.design.widget.CoordinatorLayout 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:fitsSystemWindows="true">
 
       <android.support.design.widget.AppBarLayout
            android:id="@+id/app_bar_layout"
           android:layout_width="match_parent"
           android:layout_height="wrap_content"
           android:fitsSystemWindows="true"
           android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
 
    <android.support.design.widget.CollapsingToolbarLayout
           android:id="@+id/collapsing_toolbar"
            android:layout_width="match_parent"
           android:layout_height="match_parent"
            android:fitsSystemWindows="true"
            app:contentScrim="?attr/colorPrimary"
            pp:layout_scrollFlags="scroll|exitUntilCollapsed">
 
         <ImageView
                android:id="@+id/image"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:fitsSystemWindows="true"
                android:scaleType="centerCrop"
                android:src="@drawable/nature"
                app:layout_collapseMode="parallax" />
 
        <android.support.v7.widget.Toolbar
                android:id="@+id/toolbar"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"
                android:popupTheme="@style/ThemeOverlay.AppCompat.Dark"
                android:title="Collapsing Toolbar"
                app:layout_collapseMode="pin" />
            </android.support.design.widget.CollapsingToolbarLayout>
        </android.support.design.widget.AppBarLayout>
 
         <android.support.v7.widget.RecyclerView
             android:id="@+id/recyclerView"
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              app:layout_behavior="@string/appbar_scrolling_view_behavior">
          </android.support.v7.widget.RecyclerView>
 
        <android.support.design.widget.FloatingActionButton
              android:id="@+id/fab"
              android:layout_width="wrap_content"
              android:layout_height="wrap_content"
              android:layout_margin="16dp"
              android:clickable="true"
              android:src="@drawable/ic_edit"
              app:layout_anchor="@id/recyclerView"
              app:layout_anchorGravity="bottom|right|end" />
      </android.support.design.widget.CoordinatorLayout>

Step(2)-Created card_view.xml layout-

<?xml version="1.0" encoding="utf-8"?>
    <android.support.v7.widget.CardView
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:card_view="http://schemas.android.com/apk/res-auto"
    android:id="@+id/card_view"
    card_view:cardPreventCornerOverlap="false"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:layout_margin="5dp"
    card_view:cardCornerRadius="2dp"
    card_view:contentPadding="10dp">

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:id="@+id/rel">

        <ImageView
            android:id="@+id/cardimage"
            android:layout_width="50dp"
            android:layout_height="50dp"
            android:scaleType="fitCenter"
            android:layout_alignParentLeft="true"
            android:layout_alignParentTop="true"/>

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="title"
            android:layout_marginLeft="10dp"
            android:textStyle="bold"
            android:textSize="20sp"
            android:id="@+id/cardtitle"
            android:layout_gravity="center_vertical"/>
    </LinearLayout>
</android.support.v7.widget.CardView>

Step(3)- Adding Support Library in build.graddle file-

compile 'com.android.support:cardview-v7:21.0.+'
    compile 'com.android.support:recyclerview-v7:22.2.0'

Step(4)- Created Collepse class-

 public class Collepse {

        String name;
        int id;
        public Collepse(String name, int id) {
        this.name = name;
        this.id = id;
    }
    public String getName(){
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
}

Step(5)-Created CardAdapter class-

public class CardAdapter extends RecyclerView.Adapter<CardAdapter.ViewHolder> {
    ImageView imageView;
    LinearLayout rel;
    List<Collepse> list = new ArrayList<>();

    public CardAdapter(List<Collepse> list) {
        this.list = list;
    }
    @Override
    public int getItemCount() {
        return list.size();
    }
    public Collepse getItem(int i) {
        return list.get(i);
    }
    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

        View itemView = LayoutInflater.from(parent.getContext())

                .inflate(R.layout.card_view, parent, false);
        return new ViewHolder(itemView);
    }
    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {

        holder.Collepse=getItem(position);
        holder.cardtitle.setText(list.get(position).name);
        holder.cardimage.setImageResource(list.get(position).id);
    }
    @Override
    public void onAttachedToRecyclerView(RecyclerView recyclerView) {
        super.onAttachedToRecyclerView(recyclerView);
    }

    public class ViewHolder extends RecyclerView.ViewHolder {
        ImageView cardimage;
        TextView cardtitle;
        Collepse Collepse;
        ImageView image;
        LinearLayout rel;
        CollapsingToolbarLayout collapsing_toolbar;
        public ViewHolder(final View itemView) {
            super(itemView);
            collapsing_toolbar =(CollapsingToolbarLayout)itemView.findViewById(R.id.collapsing_toolbar);

            cardimage = (ImageView) itemView.findViewById(R.id.cardimage);
            image=(ImageView)itemView.findViewById(R.id.image);
            cardtitle = (TextView) itemView.findViewById(R.id.cardtitle);
            rel=(LinearLayout)itemView.findViewById(R.id.rel);
            rel.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v  ) {
                    Toast.makeText(itemView.getContext(), "Position:" + Integer.toString(getPosition()), Toast.LENGTH_SHORT).show();
                    

                }
            });        }
    }
}

Step(6)-MainActivity

public class MainActivity extends AppCompatActivity {

        //ui control
        Toolbar toolbar;
        CollapsingToolbarLayout collapsingToolbarLayout;
        RecyclerView recyclerView;
        FloatingActionButton floatingActionButton;
        CardAdapter adapter;
        List<Collepse> collepse;
        CardView cardView;
        ImageView image;

        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            collapsingToolbarLayout = (CollapsingToolbarLayout)
                    findViewById(R.id.collapsing_toolbar);
            recyclerView=(RecyclerView)findViewById(R.id.recyclerView);
            toolbar = (Toolbar) findViewById(R.id.toolbar);
            floatingActionButton=(FloatingActionButton)findViewById(R.id.fab);
            image = (ImageView)findViewById(R.id.image);

            collapsingToolbarLayout.setTitle("Demo");
            setSupportActionBar(toolbar);


            //recyclerview
            LinearLayoutManager llm = new LinearLayoutManager(this);
            llm.setOrientation(LinearLayoutManager.VERTICAL);
            recyclerView.setLayoutManager(llm);
            recyclerView.setHasFixedSize(true);

            initializeData();

       
            //set adapter
            recyclerView.setAdapter(adapter);
            floatingActionButton.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    Snackbar.make(v, "You clicked on the fab", Snackbar.LENGTH_SHORT).show();
                }
            });
        }
        private void initializeData() {
            collepse = new ArrayList<>();
            collepse.add(new Collepse("London", R.drawable.three));
            collepse.add(new Collepse("Japan 2", R.drawable.four));
            collepse.add(new Collepse("India 3", R.drawable.five));
            collepse.add(new Collepse("USA 4", R.drawable.six));
            collepse.add(new Collepse("France 5", R.drawable.seven));
            collepse.add(new Collepse("China 6", R.drawable.eight));
            collepse.add(new Collepse("Dubai 7", R.drawable.nine));
            collepse.add(new Collepse("Russia 8", R.drawable.ten));


        }


        @Override
        public boolean onCreateOptionsMenu(Menu menu) {
            getMenuInflater().inflate(R.menu.menu_main, menu);
            return true;
        }
        @Override
        public boolean onOptionsItemSelected(MenuItem item) {
          
            int id = item.getItemId();
            //noinspection SimplifiableIfStatement
            if (id == R.id.action_settings) {
                return true;
            }
            return super.onOptionsItemSelected(item);
        }

}