tachiyomi/app/src/main/res/values/attrs.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <!-- Define the values for the attribute -->
    <attr name="typeface" format="enum">
        <enum name="ptsansNarrow" value="0"/>
        <enum name="ptsansNarrowBold" value="1"/>
    </attr>

    <!-- Tell Android that the class "CustomButton" can be styled,
         and which attributes it supports -->
    <declare-styleable name="PTSansTextView">
        <attr name="typeface"/>
    </declare-styleable>

    <declare-styleable name="MinMaxNumberPicker">
        <attr name="min" format="integer"/>
        <attr name="max" format="integer"/>
    </declare-styleable>

    <attr name="navigation_view_theme" format="reference"/>
    <attr name="selectable_list_drawable" format="reference|integer" />
    <attr name="divider_drawable" format="reference|integer" />
</resources>