Transparent PreferenceScreen fix.java

@Override
public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen,
                                     Preference preference) {
    super.onPreferenceTreeClick(preferenceScreen, preference);
    if (preference != null) {
        if (preference instanceof PreferenceScreen) {
            if (((PreferenceScreen) preference).getDialog() != null) {
                ((PreferenceScreen) preference)
                        .getDialog()
                        .getWindow()
                        .getDecorView()
                        .setBackgroundColor(Color.BLACK);
            }
        }
    }
    return false;
}