themed_icon.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
This file is created to work alongside the icon.xml file.
If the user provides a Monochrome icon in the export settings, its data will be used to overwrite the icon.xml file.
We needed to create this file to get a reference for icon_monochrome.
-->
<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
    <background android:drawable="@mipmap/icon_background"/>
    <foreground android:drawable="@mipmap/icon_foreground"/>
    <monochrome android:drawable="@mipmap/icon_monochrome"/>
</adaptive-icon>