Preview color always black

[ronenfe]

<com.skydoves.colorpickerpreference.ColorPickerPreference app:key="day_speed_color_picker" app:title="Dial color for day theme" app:summary="Choose your color" app:enabled="true" app:defaultValue="#FF9999" app:preference_attachAlphaSlideBar="true" app:preference_attachBrightnessSlideBar="true" app:preference_colorBox_radius="26dp" app:preference_dialog_title="Select Color" app:preference_dialog_positive="OK" app:preference_dialog_negative="Cancel" />

I put this in pref xml.

the preview color always stays black. Also no change event fired when changing the color override fun onSharedPreferenceChanged(sharedPreferences: SharedPreferences, key: String?) { when (key) {