1:  <?xml version="1.0" encoding="utf-8"?>

   2:  <androidx.constraintlayout.widget.ConstraintLayout

   3:      xmlns:android="http://schemas.android.com/apk/res/android"

   4:      xmlns:app="http://schemas.android.com/apk/res-auto"

   5:      android:id="@+id/main"

   6:      android:layout_width="match_parent"

   7:      android:layout_height="match_parent">

   8:   

   9:      <androidx.recyclerview.widget.RecyclerView

  10:          android:id="@+id/contactsRecyclerView"

  11:          android:layout_width="match_parent"

  12:          android:layout_height="match_parent" />

  13:   

  14:      <com.google.android.material.tabs.TabLayout

  15:          android:id="@+id/tabLayout"

  16:          android:layout_width="0dp"

  17:          android:layout_height="wrap_content"

  18:          android:background="@color/material_dynamic_neutral90"

  19:          app:layout_constraintBottom_toBottomOf="parent"

  20:          app:layout_constraintEnd_toEndOf="parent"

  21:          app:layout_constraintStart_toStartOf="parent" />

  22:   

  23:  </androidx.constraintlayout.widget.ConstraintLayout>