res/layout/desk_clock.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
  Copyright (C) 2016 The Android Open Source Project

  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
  -->

<LinearLayout
    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:orientation="vertical"
    app:statusBarBackground="@null"
    android:fitsSystemWindows="true">

    <com.google.android.material.appbar.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@null"
        app:elevation="0dp">

        <androidx.appcompat.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:contentInsetStart="0dp"
            tools:ignore="RtlSymmetry"
            android:gravity="center">

            <TextView
                android:id="@+id/title_view"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="start"
                android:layout_marginStart="24dp"
                style="@style/TextAppearance.Title" />

        </androidx.appcompat.widget.Toolbar>
    </com.google.android.material.appbar.AppBarLayout>

    <androidx.coordinatorlayout.widget.CoordinatorLayout
        android:id="@+id/content"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1">

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

        <androidx.constraintlayout.widget.ConstraintLayout
            android:id="@+id/fab_container"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="bottom"
            android:baselineAligned="false"
            android:orientation="horizontal"
            app:layout_dodgeInsetEdges="bottom"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_behavior="@string/appbar_scrolling_view_behavior">

            <com.google.android.material.floatingactionbutton.FloatingActionButton
                android:id="@+id/left_button"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center"
                android:contentDescription="@null"
                app:layout_constraintBottom_toBottomOf="parent"
                app:layout_constraintEnd_toStartOf="@id/fab"
                app:layout_constraintHorizontal_bias="0.6"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toTopOf="parent"
                android:backgroundTint="@color/accent_color2" />

            <com.google.android.material.floatingactionbutton.FloatingActionButton
                android:id="@+id/fab"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center"
                android:layout_margin="@dimen/fab_margin"
                android:contentDescription="@null"
                app:fabCustomSize="@dimen/fab_height"
                app:layout_constraintBottom_toBottomOf="parent"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toTopOf="parent"/>

            <com.google.android.material.floatingactionbutton.FloatingActionButton
                android:id="@+id/right_button"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center"
                android:contentDescription="@null"
                app:layout_constraintBottom_toBottomOf="parent"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintHorizontal_bias="0.4"
                app:layout_constraintStart_toEndOf="@id/fab"
                app:layout_constraintTop_toTopOf="parent"
                android:backgroundTint="@color/accent_color2"/>
        </androidx.constraintlayout.widget.ConstraintLayout>
    </androidx.coordinatorlayout.widget.CoordinatorLayout>

    <com.google.android.material.bottomnavigation.BottomNavigationView
        android:id="@+id/bottom_view"
        android:layout_width="match_parent"
        android:layout_height="80dp"
        android:background="@color/secondary_color"
        android:paddingTop="12dp"
        android:paddingBottom="16dp"
        app:menu="@menu/bottom_navigation_menu"
        app:itemIconTint="@color/tab_tint_color"
        app:itemTextColor="@color/tab_tint_color"
        app:itemTextAppearanceActive="@style/navText"
        app:itemTextAppearanceInactive="@style/navText"
        app:labelVisibilityMode="labeled" />
</LinearLayout>