Use custom font in style attribute

Question

What I want to achieve is adding style attribute to my axml file with custom font loaded from Asset.

I know I can load built-in fontface like this (style.xml):

<?xml version="1.0" encoding="utf-8"?>
<resources>
  <style name="CodeFont" parent="@android:style/TextAppearance.Medium">
    <item name="android:typeface">monospace</item>
  </style>
</resources>

And use it (Main.axml):

<TextView
        style="@style/CodeFont"
        local:MvxBind="Text Hello" />

I know that I can also create MyCustomTextView extending TextView and setting font by SetTypeface method, but I would like to use custom font in style attribute.

So something like:

 <resources>
    <style name="CodeFont" parent="@android:style/TextAppearance.Medium">
      <item name="android:typeface">MyCustomFontLoadedFromAsset</item>
    </style>
 </resources>

Is it possible (and how to do it)?

Solution

There isn't a way to do it straight out of the box. There's a library called Calligraphy that will let you do it. It will work on API 7+

I've also seen a trick using reflection to override serif/sans so that you can define those in your styles.xml: Is it possible to set a custom font for entire of application?, though I would recommend the first approach.