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

<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.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"
    tools:context="com.keylesspalace.tusky.MainActivity">

    <com.google.android.material.appbar.AppBarLayout
        android:id="@+id/main_appbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:elevation="@dimen/actionbar_elevation">

        <androidx.appcompat.widget.Toolbar
            android:id="@+id/main_toolbar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:contentInsetStartWithNavigation="0dp">

            <com.google.android.material.tabs.TabLayout
                android:id="@+id/tab_layout"
                style="@style/TuskyTabAppearance"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"
                app:tabGravity="fill"
                app:tabMaxWidth="0dp"
                app:tabMode="fixed"
                app:tabUnboundedRipple="false" />

        </androidx.appcompat.widget.Toolbar>

    </com.google.android.material.appbar.AppBarLayout>

    <androidx.viewpager.widget.ViewPager
        android:id="@+id/pager"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_below="@id/tab_layout"
        app:layout_behavior="@string/appbar_scrolling_view_behavior" />

    <com.google.android.material.floatingactionbutton.FloatingActionButton
        android:id="@+id/floating_btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="16dp"
        android:contentDescription="@string/action_compose"
        app:layout_anchor="@id/pager"
        app:layout_anchorGravity="bottom|end"
        app:srcCompat="@drawable/ic_create_24dp" />

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

</androidx.coordinatorlayout.widget.CoordinatorLayout>