java.lang.IllegalStateException: Must specify preferenceTheme in theme

Question

I am trying to load a PreferenceFragment (PreferenceFragmentCompat) in an application running on API 16, but every time I attempt to load the fragment I get the following error:

Answer 1

I managed to fix it. The problem was my activity that was loading the fragment didn't have the theme set.

<activity android:name=".controllers.MainActivity" android:theme="@style/AppTheme.Base" />