Changing the FontStyle of Toolbar in Android

 1 . Create toolbar.xml and add a style to  it android:theme="@style/ToolbarTheme"

	<?xml version="1.0" encoding="utf-8"?>
	<androidx.appcompat.widget.Toolbar
	xmlns:android="http://schemas.android.com/apk/res/android"
	android:id="@+id/toolbar"
	android:layout_width="match_parent"
	android:layout_height="?attr/actionBarSize"
	android:background="@color/actionbar_bg_color"
	android:theme="@style/ToolbarTheme">
	</androidx.appcompat.widget.Toolbar>

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 2 . Add it in styles.xml

	<!-- Toolbar theme -->
	<style name="ToolbarTheme" parent="ThemeOverlay.AppCompat.Dark.ActionBar">
	<item name="android:fontFamily">@font/audiowideregular</item>
	</style>

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 3 . Create a directory font inside res directory . Add the font inside it.