bottom_app_bar.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"
    android:layout_width="match_parent"
    android:background="@color/gray"
    android:layout_height="match_parent">

    <!-- Other components and views -->

    <com.google.android.material.bottomappbar.BottomAppBar
        android:id="@+id/bar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        style="@style/Widget.MaterialComponents.BottomAppBar"
        android:layout_gravity="bottom"
        app:backgroundTint="@color/skyBlue"
        app:navigationIcon="@drawable/ic_dehaze_black_24dp"/>


    <com.google.android.material.floatingactionbutton.FloatingActionButton
        android:id="@+id/fab"
        android:layout_width="wrap_content"
        android:src="@drawable/ic_add_black_24dp"
        android:layout_height="wrap_content"
        app:backgroundTint="@color/colorAccent"
        app:layout_anchor="@id/bar"/>

</androidx.coordinatorlayout.widget.CoordinatorLayout>