private void setReadModeImg() {
   if (day_night_title != null) {
     boolean isDay = PreferenceUtils.getDayMode(getActivity());
     int id = isDay ? R.drawable.day_mode : R.drawable.night_mode;
     day_night_title.setCompoundDrawablesWithIntrinsicBounds(0, 0, id, 0);
   }
 }
 private void updateTextColor(Context context) {
   int colorId = PreferenceUtils.getDayMode(context) ? R.color.text_black : R.color.text_white;
   fontSizeTitleTV.setTextColor(context.getResources().getColor(colorId));
   fontSizeTV.setTextColor(context.getResources().getColor(colorId));
   day_night_title.setTextColor(context.getResources().getColor(colorId));
   readSlokaCB.setTextColor(context.getResources().getColor(colorId));
   showSlokaCB.setTextColor(context.getResources().getColor(colorId));
   showStoryCB.setTextColor(context.getResources().getColor(colorId));
   enableSpeakCB.setTextColor(context.getResources().getColor(colorId));
 }
 private int getThemeId() {
   return PreferenceUtils.getDayMode(getActivity())
       ? android.R.style.Theme_Holo_Light_Dialog
       : android.R.style.Theme_Holo_Dialog;
 }