gistfile1.txt

<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools">
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:orientation="vertical"
              android:background="@color/grey_5" android:fitsSystemWindows="true"
              android:layout_width="match_parent"
              android:layout_height="match_parent">

    <com.google.android.material.appbar.AppBarLayout android:background="@color/grey_5"
                                            android:id="@+id/appbar_main"
                                            android:layout_width="fill_parent"
                                            android:layout_height="wrap_content"
                                            app:elevation="0.0dip" tools:ignore="MissingConstraints">
                                            
        <androidx.appcompat.widget.Toolbar android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
                                           android:id="@+id/toolbar" android:layout_width="fill_parent"
                                           android:layout_height="?actionBarSize"
                                           app:title="My Wallet"
                                           app:titleTextColor="@color/colorPrimary"
                                           app:contentInsetStartWithNavigation="0.0dip"
                                           app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
                                           app:theme="@style/Toolbar.Light"/>
                                           
    </com.google.android.material.appbar.AppBarLayout>

    <fragment android:layout_width="match_parent" android:layout_height="0dp"
                                           android:name="androidx.navigation.fragment.NavHostFragment"
                                           app:navGraph="@navigation/nav_graph"
                                           app:defaultNavHost="true"
                                           tools:ignore="MissingConstraints"
                                           app:layout_constraintBottom_toTopOf="@+id/bottom_nav"
                                           android:id="@+id/main_fragment"
                                           app:layout_constraintTop_toBottomOf="@+id/appbar_main">
                                           </fragment>
                                           
    <com.google.android.material.bottomnavigation.BottomNavigationView android:layout_width="match_parent"
                                          app:elevation="3dp"
                                          android:id="@+id/bottom_nav"
                                          app:menu="@menu/nav_menu"
                                          android:layout_height="wrap_content"
                                          android:background="@color/white_transparency"                                                                               tools:ignore="MissingConstraints"
                                          android:layout_marginBottom="4dp"
                                          app:layout_constraintBottom_toBottomOf="parent"
                                          app:layout_constraintEnd_toEndOf="parent"
                                          app:layout_constraintStart_toStartOf="parent">

    </com.google.android.material.bottomnavigation.BottomNavigationView>

</androidx.constraintlayout.widget.ConstraintLayout>
</layout>