Invalid resource directory name "font" Xamarin Android

For me the solution was to remove all the old Android SDK Build Tools from the SDK Manager. Now I only have for api level 26 and 27 installed and it works.

First always check out the latest xamarin documentation about new features. https://developer.xamarin.com/guides/android/platform_features/introduction-to-oreo/

I quickly created a new xamarin android project and added two textviews with diffrent fonts:

My solution looks as the following:

I usually try to avoid capital letters in resource names as the android studio complains about it.

Main Layout:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

  <TextView
    android:text="Pacifico example text"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:fontFamily="@font/pacifico" />

  <TextView
  android:text="Roboto light example text"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:fontFamily="@font/roboto_light" />

</LinearLayout>

I think that you do not use the latest platform to build. Check that you use the latest platform (Oreo) to build the application.

the right answer is in invalid resource directory. you must add fonts in assets/fonts and clean Rebuild