PreferenceFragment
class SettingsFragment: PreferenceFragment() { ... override fun onActivityCreated(savedInstanceState: Bundle?) { super.onActivityCreated(savedInstanceState) val listView = view.findViewById<ListView>(android.R.id.list) if (listView != null) { listView.divider = null } }}NOTE: the above code can be put in onViewCreated as well
PreferenceFragmentCompat
class SettingsFragment: PreferenceFragmentCompat() { ... override fun onActivityCreated(savedInstanceState: Bundle?) { super.onActivityCreated(savedInstanceState) setDivider(null) }}