zumo_2.0_android/app/src/main/res/font/font_droid_sans.xml

<?xml version="1.0" encoding="utf-8"?>
<font-family xmlns:android="http://schemas.android.com/apk/res/android"
             xmlns:app="http://schemas.android.com/apk/res-auto">

  <!-- normal -->
  <font
    android:font="@font/droid_sans"
    android:fontStyle="normal"
    android:fontWeight="400"
    app:font="@font/droid_sans"
    app:fontStyle="normal"
    app:fontWeight="400"/>

  <!-- italic -->
  <font
    android:font="@font/droid_sans"
    android:fontStyle="italic"
    android:fontWeight="400"
    app:font="@font/droid_sans"
    app:fontStyle="italic"
    app:fontWeight="400"/>

  <!-- bold -->
  <font
    android:font="@font/droid_sans"
    android:fontStyle="normal"
    android:fontWeight="700"
    app:font="@font/droid_sans"
    app:fontStyle="normal"
    app:fontWeight="700"/>

</font-family>