huixiang_app/lib/home/activity_list_page.dart

import 'package:dio/dio.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:fluttertoast/fluttertoast.dart';
import 'package:huixiang/retrofit/data/activity.dart';
import 'package:huixiang/retrofit/data/base_data.dart';
import 'package:huixiang/retrofit/data/page.dart';
import 'package:huixiang/retrofit/retrofit_api.dart';
import 'package:huixiang/view_widget/classic_header.dart';
import 'package:huixiang/view_widget/custom_image.dart';
import 'package:huixiang/view_widget/loading_view.dart';
import 'package:huixiang/view_widget/my_footer.dart';
import 'package:pull_to_refresh/pull_to_refresh.dart';
import 'package:shared_preferences/shared_preferences.dart';

class ActivityListPage extends StatefulWidget {
  @override
  State<StatefulWidget> createState() {
    return _ActivityListPage();
  }
}

class _ActivityListPage extends State<ActivityListPage>
    with AutomaticKeepAliveClientMixin {
  ApiService apiService;

  @override
  void initState() {
    super.initState();
    SharedPreferences.getInstance().then((value) => {
          apiService =  ApiService(Dio(), context: context, token: value.getString('token')),
          queryActivity(),
        });
  }

  List<Activity> activityList;

  queryActivity() async {
    showCupertinoDialog(
        context: context,
        barrierDismissible: true,
        builder: (context) {
          return LoadingView();
        });
    BaseData baseData = await apiService.informationList({
      "pageNum": 1,
      "pageSize": 10,
      "searchKey": "",
      "type": 1,
      "state": 1
    }).catchError((error) {
      _refreshController.refreshFailed();
    });
    if (Navigator.canPop(context)) Navigator.of(context).pop();
    if (baseData != null && baseData.isSuccess) {
      PageInfo pageInfo = PageInfo.fromJson(baseData.data);
      _refreshController.refreshCompleted();
      setState(() {
        activityList = pageInfo.list.map((e) => Activity.fromJson(e)).toList();
      });
    } else {
      Fluttertoast.showToast(msg: baseData.msg);
    }
  }

  RefreshController _refreshController = RefreshController();

  @override
  Widget build(BuildContext context) {
    super.build(context);
    return Container(
      child: SmartRefresher(
        controller: _refreshController,
        enablePullDown: true,
        enablePullUp: false,
        header: MyHeader(),
        footer: CustomFooter(
          builder: (context, mode) {
            return MyFooter(mode);
          },
        ),
        onRefresh: queryActivity,
        child: ListView.builder(
          physics: BouncingScrollPhysics(),
          itemCount: activityList == null ? 0 : activityList.length,
          itemBuilder: (context, position) {
            return InkWell(
              onTap: () {
                Navigator.of(context)
                    .pushNamed('/router/store_detail_page', arguments: {
                  "html": activityList[position].content,
                  "title": activityList[position].mainTitle,
                  "time": activityList[position].createTime,
                  "author": activityList[position].storeName
                });
              },
              child: activityItem(activityList[position]),
            );
          },
        ),
      ),
    );
  }

  Widget activityItem(Activity activity) {
    return AspectRatio(
      aspectRatio: 1.34,
      child: Container(
        margin: EdgeInsets.only(left: 16, right: 16, top: 8, bottom: 8),
        decoration: BoxDecoration(
          color: Colors.white,
          boxShadow: [
            BoxShadow(
              color: Colors.black.withAlpha(12),
              offset: Offset(0, 3),
              blurRadius: 14,
              spreadRadius: 0,
            )
          ],
          borderRadius: BorderRadius.all(Radius.circular(8)),
        ),
        child: Column(
          children: [
            MImage(
              activity.coverImg,
              aspectRatio: 2.1,
              radius: BorderRadius.only(
                topLeft: Radius.circular(8),
                topRight: Radius.circular(8),
              ),
              fit: BoxFit.cover,
              errorSrc: "assets/image/default_2_1.png",
              fadeSrc: "assets/image/default_2_1.png",
            ),
            Container(
              padding: EdgeInsets.only(left: 16, right: 16, top: 8, bottom: 12),
              child: Column(
                mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Text(
                    activity.mainTitle,
                    style: TextStyle(
                      fontWeight: FontWeight.bold,
                      fontSize: 14,
                      color: Colors.black,
                    ),
                  ),
                  SizedBox(
                    height: 4,
                  ),
                  Text(
                    activity.viceTitle ?? "",
                    style: TextStyle(
                      fontSize: 10,
                      color: Color(0xFF727272),
                    ),
                  ),
                  Row(
                    crossAxisAlignment: CrossAxisAlignment.end,
                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
                    children: [
                      Text(
                        activity.storeName == null ? "" : activity.storeName,
                        style: TextStyle(
                          color: Color(0xFF060606),
                          fontSize: 12,
                        ),
                      ),
                      Column(
                        crossAxisAlignment: CrossAxisAlignment.end,
                        mainAxisAlignment: MainAxisAlignment.center,
                        children: [
                          Text(
                            activity.startTime.split(" ")[1],
                            style: TextStyle(
                              color: Color(0xFF32A060),
                              fontSize: 12,
                              fontWeight: FontWeight.bold,
                            ),
                          ),
                          Text(
                            activity.startTime.split(" ")[0],
                            style: TextStyle(
                              color: Color(0xFF32A060),
                              fontSize: 12,
                              fontWeight: FontWeight.bold,
                            ),
                          ),
                        ],
                      )
                    ],
                  )
                ],
              ),
            )
          ],
        ),
      ),
    );
  }

  @override
  bool get wantKeepAlive => true;
}