DatePickerWidget can't refresh data ?

[Qusdrok]

i'm using StreamBuilder to build a DatePickerWidget if initial data changed, but it don't working, why?
import 'dart:async';

import 'package:LunarCalendar/models/app_utils.dart';
import 'package:dotted_border/dotted_border.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter_holo_date_picker/flutter_holo_date_picker.dart';
import 'package:flutter_screenutil/screenutil.dart';

class DoiNgayPage extends StatefulWidget {
static const String routeName = '/DNPage';

@OverRide
State createState() {
return DoiNgayPageState();
}
}

class DoiNgayPageState extends State {
DateTime solarDay = DateTime.now();
DateTime lunarDay = DateTime.now();

final dateTimeStream = StreamController();

@OverRide
void dispose() {
super.dispose();
dateTimeStream.close();
}

@OverRide
void initState() {
super.initState();

DateTime dateTime = AppUtils().GetLunarDateFromSolarDate(solarDay.day, solarDay.month, solarDay.year);
lunarDay = new DateTime(dateTime.year, dateTime.month, dateTime.day);
dateTimeStream.sink.add(lunarDay);

}

@OverRide
Widget build(BuildContext context) {
ScreenUtil.init(context, width: 1280, height: 720, allowFontScaling: false);

return Scaffold(
  backgroundColor: Colors.white,
  appBar: AppBar(
    automaticallyImplyLeading: false,
    centerTitle: true,
    title: Text('ĐỔI NGÀY', style: TextStyle(fontSize: 22)),
    backgroundColor: Color(0xff4965e0),
  ),
  body: Column(
    mainAxisAlignment: MainAxisAlignment.spaceEvenly,
    children: <Widget>[
      new Container(
        child: Row(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Image.asset(
              "assets/images/duonglich.png",
              height: 50,
              width: 50,
              fit: BoxFit.fill,
            ),
            Text(
              ' Dương lịch: ${AppUtils().formatViewDay(solarDay)}',
              style: TextStyle(
                fontSize: ScreenUtil().setSp(70),
                color: Colors.orangeAccent,
                fontWeight: FontWeight.w500,
              ),
            ),
          ],
        ),
      ),
      new Container(
        padding: EdgeInsets.only(left: ScreenUtil().setWidth(120), right: ScreenUtil().setWidth(120)),
        child: DottedBorder(
          color: Colors.lightBlueAccent,
          borderType: BorderType.RRect,
          radius: Radius.circular(5),
          child: DatePickerWidget(
            looping: false,
            initialDate: solarDay,
            onChange: (DateTime date, _) {
              setState(() {
                solarDay = date;
                DateTime dateTime = AppUtils().GetLunarDateFromSolarDate(solarDay.day, solarDay.month, solarDay.year);
                lunarDay = new DateTime(dateTime.year, dateTime.month, dateTime.day);
              });

              dateTimeStream.sink.add(lunarDay);
            },
            dateFormat: "dd-MMMM-yyyy",
            locale: DateTimePickerLocale.vi,
            pickerTheme: DateTimePickerTheme(
              itemTextStyle: TextStyle(color: Colors.black, fontSize: 19, fontWeight: FontWeight.bold),
              dividerColor: Colors.orange[200],
            ),
          ),
        ),
      ),
      new Container(
        child: Row(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Image.asset(
              "assets/images/amlich.png",
              height: 50,
              width: 55,
              fit: BoxFit.fill,
            ),
            Text(
              ' Âm lịch: ${AppUtils().formatViewDay(lunarDay)}',
              style: TextStyle(
                fontSize: ScreenUtil().setSp(70),
                color: Colors.orangeAccent,
                fontWeight: FontWeight.w500,
              ),
            ),
          ],
        ),
      ),
      amlichbuilder(),
    ],
  ),
);

}

amlichbuilder() {
return StreamBuilder(
stream: dateTimeStream.stream,
builder: (context, snapshot) {
if (!snapshot.hasData) return CircularProgressIndicator();

    return new Container(
      padding: EdgeInsets.only(left: ScreenUtil().setWidth(120), right: ScreenUtil().setWidth(120)),
      child: DottedBorder(
        color: Colors.lightBlueAccent,
        borderType: BorderType.RRect,
        radius: Radius.circular(5),
        child: DatePickerWidget(
          looping: false,
          initialDate: snapshot.data,
          onChange: (DateTime date, _) {
            setState(() {
              lunarDay = date;
              DateTime dateTime = AppUtils().GetSolarDateFromLunarDate(lunarDay.day, lunarDay.month, lunarDay.year);
              solarDay = new DateTime(dateTime.year, dateTime.month, dateTime.day);
            });
          },
          dateFormat: "dd-MMMM-yyyy",
          locale: DateTimePickerLocale.vi,
          pickerTheme: DateTimePickerTheme(
            itemTextStyle: TextStyle(color: Colors.black, fontSize: 19, fontWeight: FontWeight.bold),
            dividerColor: Colors.orange[200],
          ),
        ),
      ),
    );
  },
);

}
}

[kfiross]

Hi,
Can you send a link to the repository? It's hard to understand what the problem you face with or what you expected to happen