Contacts Demo App

activity_contacts_layout.xml

<android.support.design.widget.CoordinatorLayout
    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/main_content"
    tools:context=".ContactsActivity">

    <android.support.design.widget.AppBarLayout
        android:id="@+id/appbar"
        android:layout_width="match_parent"
        android:layout_height="112dp"
        android:fitsSystemWindows="true"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

        <android.support.design.widget.CollapsingToolbarLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:minHeight="?attr/actionBarSize"
            android:fitsSystemWindows="true"
            app:layout_scrollFlags="scroll|enterAlwaysCollapsed|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:fitsSystemWindows="false"
                app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
                app:layout_collapseMode="pin"
                app:layout_scrollFlags="scroll|enterAlways">
                
                <!-- Search layout -->
                <android.support.v7.widget.CardView
                    ....>
                    <!-- Some content -->
                </android.support.v7.widget.CardView>

            </android.support.v7.widget.Toolbar>
            
            <!-- Collapsible Layout for Last call -->
            <android.support.v7.widget.CardView
                android:layout_height="48dp"
                android:layout_width="match_parent"
                android:layout_marginRight="18dp"
                android:layout_marginLeft="18dp"
                android:layout_marginTop="?attr/actionBarSize"
                app:cardBackgroundColor="#fff"
                app:cardCornerRadius="4dp"
                app:cardElevation="3dp"
                app:contentPadding="6dp"
                app:layout_collapseMode="pin">

                <!-- Some content -->

            </android.support.v7.widget.CardView>

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

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

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        app:layout_behavior="@string/appbar_scrolling_view_behavior">

        <android.support.design.widget.TabLayout
            android:id="@+id/tabs"
            android:layout_width="match_parent"
            android:layout_height="48dp"
            android:background="@color/primary_color"
            app:layout_scrollFlags="scroll"/>

        <android.support.v4.view.ViewPager
            android:id="@+id/viewpager"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />

    </LinearLayout>

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