Edit res/values/styles.xml to include preferenceTheme for AppTheme (theme used by Activity in AndroidManifest.xml)
NOTE: applicable to support library PreferenceFragmentCompat only, not standard PreferenceFragment.
<style name="AppTheme.NoActionBar">
<item name="preferenceTheme">@style/PreferenceThemeOverlay.v14.Material</item>
<!-- <item name="preferenceTheme">@style/PreferenceThemeOverlay</item> -->
<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>
</style>Refer to Android Settings Preference Using PreferenceFragmentCompat for complete example.