chinwag-android/app/src/main/res/layout/activity_main.xml

<?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:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.keylesspalace.tusky.MainActivity">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

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

            <android.support.design.widget.TabLayout
                android:id="@+id/tab_layout"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:background="?android:colorBackground"
                android:paddingTop="?attr/actionBarSize"
                app:tabGravity="fill"
                app:tabMaxWidth="0dp"
                app:tabPaddingEnd="1dp"
                app:tabPaddingStart="1dp"
                app:tabPaddingTop="4dp"
                app:tabTextAppearance="@style/TabLayoutTextStyle">

                <android.support.design.widget.TabItem
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="@string/title_home" />

                <android.support.design.widget.TabItem
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="@string/title_notifications" />

                <android.support.design.widget.TabItem
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="@string/title_public_local" />

                <android.support.design.widget.TabItem
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="@string/title_public_federated" />

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

        </android.support.v4.view.ViewPager>

    </LinearLayout>

    <com.arlib.floatingsearchview.FloatingSearchView
        android:id="@+id/floating_search_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:floatingSearch_close_search_on_keyboard_dismiss="true"
        app:floatingSearch_leftActionMode="showHamburger"
        app:floatingSearch_searchBarMarginLeft="6dp"
        app:floatingSearch_searchBarMarginRight="6dp"
        app:floatingSearch_searchBarMarginTop="4dp"
        app:floatingSearch_searchHint="@string/search"
        app:floatingSearch_showSearchKey="false"
        app:floatingSearch_suggestionsListAnimDuration="250" />

    <View
        android:id="@+id/tab_bottom_shadow"
        android:layout_width="match_parent"
        android:layout_height="2dp"
        android:background="@drawable/material_drawer_shadow_bottom"
        android:visibility="visible"
        app:layout_anchor="@id/tab_layout"
        app:layout_anchorGravity="bottom" />

    <android.support.design.widget.FloatingActionButton
        android:id="@+id/floating_btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="16dp"
        android:clickable="true"
        android:contentDescription="@string/action_compose"
        app:layout_anchor="@id/pager"
        app:layout_anchorGravity="bottom|end"
        app:srcCompat="@drawable/ic_create_24dp" />

    <FrameLayout
        android:id="@+id/overlay_fragment_container"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

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