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_screenutil/flutter_screenutil.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;
  final tabText = Rx<List<CardTypeModel>>([]);
  final classId = Rx<List<dynamic>>([]);
    final cardTypeList = Rx<List<CardListModel>>([]);

    String? location = AppController.t.locationStr;
    late  int _selectedIndex;
bool hasTopLoad=false;



  @override
  void initState() {
    // TODO: implement initState
    super.initState();
    // _controller.addListener(() {
    //   setState(() => _selectedIndex = _controller.index);
    //   print("liucheng-> ${_controller.indexIsChanging}");
    // });
    _controller=TabController(length: tabText.value.length, vsync: this);
    _geList();
    _getAllCarsList();



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

  void _getAllCarsList (){
    getMachinery(location??'112.087465,32.687507').then((value) {
      final list = <CardListModel>[];
      value['records'].forEach((item) {
        list.add(CardListModel.fromJson(item));
      });
      cardTypeList(list);
    });
  }
  void _geList (){
    getMachineryType().then((value) {
      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);
        String a=json.encode(classtypeId);
        print(a);

      });
      classId(classtypeId);

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


    });
  }


  void _handleTabChange(i){
    final index=i;
    if(index==0){
      _getAllCarsList();
    }else {
      final typeId = classId.value[index];
      typeMachinery(location ?? '112.087465,32.687507', typeId.toString())
          .then((value) {
        final list = <CardListModel>[];
        value['records'].forEach((item) {
          list.add(CardListModel.fromJson(item));
        });
        cardTypeList(list);

      });
    }


  }

  @override
  Widget build(BuildContext context) {

      return Scaffold(
          resizeToAvoidBottomInset: false,
          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?
                ListView(children: [
                  Column(
                    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);
                            },
                          )),
                      Container(
                        child: Obx(() =>
                            Column(
                              children:
                              cardTypeList.value.length > 0 ?
                              cardTypeList()
                                  .map((item) => CarsCard(item: item))
                                  .toList()
                                  : [NullCard(text: '暂无农机信息！')],
                            )),
                      )
                    ],
                  )
                ]):Text('加载中...'),
              )));
    }
}