code: public static void setRateClickDate(Context context, Date rateClickDate) {
          final long rateClickDateMills = ((rateClickDate != null) ? rateClickDate.getTime() : 0);
  
          SharedPreferences prefs = getSharedPreferences(context);
          SharedPreferences.Editor prefsEditor = prefs.edit();
  
          prefsEditor.putLong(PREF_KEY_RATE_CLICK_DATE, rateClickDateMills);
  
          prefsEditor.commit();
      }
docs: Modify internal value.
  <p/>
  If you use this method, you might need to have a good understanding of this class code.
  
  @param context       Context
  @param rateClickDate Date of "Rate" button clicked.