farmer_client/lib/pages/MoreCars/index.dart

import 'dart:convert';

import 'package:farmer_client/pages/home/widgets/home/widgets/headers.dart';
import 'package:flutter/material.dart';
import 'package:flutter_easyloading/flutter_easyloading.dart';
import 'package:flutter_easyrefresh/easy_refresh.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:fluttertoast/fluttertoast.dart';
import 'package:get/get.dart';

import '../../models/app.dart';
import '../../models/entities/CardListModel.dart';
import '../../models/entities/CardTypeModel.dart';
import '../../services/homeAPI.dart';
import '../../widgets/CarsCard.dart';
import '../../widgets/NullCard.dart';
import '../../widgets/Search.dart';

class MoreCars extends StatefulWidget {
  const MoreCars({Key? key}) : super(key: key);
  @override
  State<MoreCars> createState() => _MoreCarsState();
}

class _MoreCarsState extends State<MoreCars> with TickerProviderStateMixin {
  late TabController _controller;
  late EasyRefreshController _controllerList;

  final tabText = Rx<List<CardTypeModel>>([]);
  final classId = Rx<List<dynamic>>([]);
  final cardTypeList = Rx<List<CardListModel>>([]);
  final newCardTypeList = Rx<List<CardListModel>>([]);
  var pageIndex = 1; //页数
  var count = 10; //每页10条
  late int maxSum; //最多条数
  String value=''; //最多条数
  int _count = 0;
  String? location = AppController.t.locationStr;
  bool hasTopLoad = false;
  int index = 0;
  String typeId='';
  Map<String, dynamic> params = {'pageNum': 1,'location':AppController.t.locationStr,'typeId':''};

  @override
  void initState() {
    // TODO: implement initState
    super.initState();
    _controller = TabController(length: tabText.value.length, vsync: this);
    _controllerList = EasyRefreshController();

    // _controller.addListener(() {
    //   setState(() => _selectedIndex = _controller.index);
    //   print("liucheng-> ${_controller.indexIsChanging}");
    // });
    _geList();
    getNewData(params);
    // _getAllCarsList();
  }

  @override
  void dispose() {
    super.dispose();
    _controller.dispose();
    _controllerList.dispose();
  }



  void getNewData(Map? params) {
    pageIndex = 1;
    params!['pageNum'] = pageIndex;
    print(params['pageNum']);
    getMachinery(params).then((value) {
      maxSum = value['total'];

      List<CardListModel> list = [];
      value['records'].forEach((item) {
        list.add(CardListModel.fromJson(item));
      });
      cardTypeList(list);
      newCardTypeList(list);
      _count = cardTypeList.value.length;
    });
  }
  void _geList() {
    getMachineryType().then((value) {
      EasyLoading.show(status: '数据加载中...');

      final list = <CardTypeModel>[];
      List classtypeId = [];
      List<CardTypeModel> newTabs = [
        CardTypeModel.fromJson({'name': '全部'})
      ];
      value['records'].forEach((item) {
        list.add(CardTypeModel.fromJson(item));
      });
      list.insertAll(0, newTabs);
      tabText(list);
      tabText().forEach((item) {
        classtypeId.add(item.typeId);
      });
      classId(classtypeId);

      hasTopLoad = true;
      _controller = TabController(length: tabText.value.length, vsync: this);
      print(hasTopLoad);
      EasyLoading.dismiss();

    });
  }
  void getMoreData(Map? params) {
    pageIndex++;
    params!['pageNum'] = pageIndex;
    print(params['pageNum']);
    searchMachinery(params).then((value) {
      maxSum = value['total'];
      List<CardListModel> list = [];
      List<CardListModel> Newlist = [];
      value['records'].forEach((item) {
        list.add(CardListModel.fromJson(item));
      });
      newCardTypeList.value.addAll(list);
      Newlist.addAll(newCardTypeList.value);
      cardTypeList(Newlist);
      _count = cardTypeList.value.length;
    });
  }
  void _handleTabChange(i) {
    index = i;
    if (index == 0) {
      Map<String, dynamic> paramss = {'pageNum': 1,'location':location};
      getNewData(paramss);
    } else {
      // final typeId = classId.value[index];
      print('typeId+$typeId');
      typeId=classId.value[index];
      print('typeId+$typeId');


      // Map<String, dynamic> params = {'pageNum': 1,'location':location,'typeId':typeId.toString()};
      params['typeId']=classId.value[index];
      getNewData(params);

    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        resizeToAvoidBottomInset: true,
        appBar: AppBar(
          centerTitle: true,
          backgroundColor: Colors.transparent,
          foregroundColor: const Color(0xFF333333),
          elevation: 0,
          toolbarHeight: 44.w,
          title: Text(
            '更多',
            style: TextStyle(
                color: const Color(0xFF333333),
                fontWeight: FontWeight.bold,
                fontSize: 17.sp,
                letterSpacing: 2),
          ),
        ),
        body: SafeArea(
            child: Container(
              alignment: Alignment.center,
              decoration: BoxDecoration(color: Colors.white),
              child: !hasTopLoad
                  ?  Column(
                children: [
                  ListView(
                    shrinkWrap: true,
                    physics: NeverScrollableScrollPhysics(),
                    children: [
                      Container(
                        padding: EdgeInsets.fromLTRB(0, 15, 0, 15),
                        width: 350.w,
                        child: TypeHeader(
                          type: false,
                        ),
                      ),
                      Obx(() => TabBar(
                        labelStyle: TextStyle(
                            fontSize: ScreenUtil().setSp(19),
                            fontWeight: FontWeight.bold),
                        //选中的样式
                        unselectedLabelStyle:
                        TextStyle(fontSize: ScreenUtil().setSp(16)),
                        //未选中的样式
                        controller: _controller,
                        isScrollable: true,
                        //可滚动
                        indicatorColor: Colors.black,
                        //指示器的颜色
                        labelColor: Colors.black,
                        //选中文字颜色
                        unselectedLabelColor: Color(0xffadadad),
                        // indicatorSize: TabBarIndicatorSize.label, //指示器与文字等宽
                        tabs: tabText.value
                            .map((e) => Tab(text: e.name.toString()))
                            .toList(),
                        onTap: (int i) {
                          _handleTabChange(i);
                        },
                      )),
                    ],
                  ),
                  Expanded(
                    child: _buildListView(context),
                  )
                ],
              )
                  : Text('加载中...'),
            )));
  }
  Widget _buildListView(BuildContext context) {
    return EasyRefresh(
      controller: _controllerList,
      firstRefresh: true,
      onRefresh: () async {
        await Future.delayed(Duration(seconds: 1), () {
          print("下拉刷新-----");
          // Map<String, dynamic> params = {'pageNum': pageIndex,'location':AppController.t.locationStr,'q':value};

          getNewData(params);
          _controllerList.resetLoadState();
        });
      },
      onLoad: () async {
        await Future.delayed(Duration(seconds: 1), () {
          if (_count == maxSum) {
            Fluttertoast.showToast(msg: '暂无更多数据哦');
          } else {
            // Map<String, dynamic> params = {'pageNum': pageIndex,'location':AppController.t.locationStr,'q':value};

            getMoreData(params);
          }
          _controllerList.finishLoad(noMore: _count >= maxSum);

        });
      },
      child: Obx(
            () => cardTypeList.value.length > 0
            ?
        Column(
          mainAxisSize: MainAxisSize.min,
          children: cardTypeList.value
              .map((item) => CarsCard(item: item))
              .toList(),
        ): NullCard(text: '暂无农机信息！'),
      ),
    );
  }

}