wiimmfi-watcher/app/src/main/res/layout/activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.drawerlayout.widget.DrawerLayout 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:id="@+id/drawer_layout"
    tools:context=".MainActivity">

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:fitsSystemWindows="true">

        <com.google.android.material.appbar.AppBarLayout
            android:id="@+id/appBarLayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:fitsSystemWindows="true"
            app:layout_constraintTop_toTopOf="parent">

            <com.google.android.material.appbar.MaterialToolbar
                android:id="@+id/toolbar"
                style="@style/Widget.MaterialComponents.Toolbar.Primary"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"
                android:background="@android:color/transparent"
                android:elevation="0dp"
                app:menu="@menu/top_app_bar"
                app:title="Wiimmfi Watcher" />

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

        <androidx.fragment.app.FragmentContainerView
            android:id="@+id/friend_code_input_fragment"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:layout_constraintTop_toBottomOf="@+id/appBarLayout" />

        <androidx.fragment.app.FragmentContainerView
            android:id="@+id/room_fragment"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hapticFeedbackEnabled="false"
            app:layout_constraintTop_toBottomOf="@+id/friend_code_input_fragment" />

        <com.google.android.material.floatingactionbutton.ExtendedFloatingActionButton
            android:id="@+id/clear_button"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="bottom|right"
            android:layout_margin="15dp"
            android:foregroundTint="#FFFFFF"
            android:text="Clear"
            android:textColor="#FFFFFF"
            app:backgroundTint="#1E88E5"
            app:icon="@drawable/ic_baseline_clear_all_24"
            app:iconTint="#FFFFFF"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent" />

        <!-- Screen content -->
        <!-- Use app:layout_behavior="@string/appbar_scrolling_view_behavior" to fit below top app bar -->

    </androidx.constraintlayout.widget.ConstraintLayout>


</androidx.drawerlayout.widget.DrawerLayout>