huixiang_app/lib/mine/roll_center_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/generated/l10n.dart';
import 'package:huixiang/retrofit/data/base_data.dart';
import 'package:huixiang/retrofit/data/coupon.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/item_title.dart';
import 'package:huixiang/view_widget/my_footer.dart';
import 'package:huixiang/view_widget/new_coupon_widget.dart';
import 'package:huixiang/view_widget/round_button.dart';
import 'package:huixiang/view_widget/selector_store_dialog.dart';
import 'package:pull_to_refresh/pull_to_refresh.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';

class RollCenterPage extends StatefulWidget {
  @override
  State<StatefulWidget> createState() {
    return _RollCenterPage();
  }
}

class _RollCenterPage extends State<RollCenterPage> {
  RefreshController _refreshController;

  ApiService apiService;

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

    SharedPreferences.getInstance().then((value) => {
          apiService = ApiService(Dio(),
              context: context, token: value.getString('token')),
          queryCoupon(),
        });
    _refreshController = RefreshController(initialRefresh: false);
  }

  int pageNum = 1;
  List<Coupon> coupons = [];

  queryCoupon() async {
    BaseData baseData = await apiService.queryCoupon({
      "centre": true,
      "pageNum": pageNum,
      "pageSize": 10,
      "searchKey": "",
      "state": 0
    }).catchError((onError) {
      _refreshController.refreshFailed();
      _refreshController.loadFailed();
    });
    if (pageNum == 1) coupons.clear();
    if (baseData != null && baseData.isSuccess) {
      PageInfo pageInfo = PageInfo.fromJson(baseData.data);
      coupons.addAll(pageInfo.list.map((e) => Coupon.fromJson(e)).toList());

      _refreshController.refreshCompleted();
      _refreshController.loadComplete();
      if (pageInfo.pageNum == pageInfo.pages) {
        _refreshController.loadNoData();
      } else {
        pageNum += 1;
      }
      setState(() {});
    } else {
      Fluttertoast.showToast(msg: baseData.msg);
      _refreshController.refreshFailed();
      _refreshController.loadFailed();
    }
  }

  refreshCoupon() {
    pageNum = 1;
    queryCoupon();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(
          S.of(context).lingquanzhongxin,
          style: TextStyle(
            color: Colors.black,
            fontWeight: FontWeight.bold,
          ),
        ),
        centerTitle: false,
        backgroundColor: Color(0xFFF7F7F7),
        elevation: 0,
        leading: GestureDetector(
          onTap: () {
            Navigator.of(context).pop();
          },
          child: Container(
            alignment: Alignment.centerRight,
            margin: EdgeInsets.only(left: 10.w),
            padding: EdgeInsets.all(6),
            child: Icon(
              Icons.arrow_back_ios,
              color: Colors.black,
              size: 24,
            ),
          ),
        ),
        titleSpacing: 2,
        leadingWidth: 56.w,
      ),
      body: Container(
        child: Column(
          children: [
            ItemTitle(
              text: S.of(context).kelingqudeyouhuiquan,
              imgPath: "assets/image/icon_card_coupon.png",
              moreText: S.of(context).chakanwodekaquan,
              onTap: () {
                Navigator.of(context).pushNamed('/router/mine_card');
              },
            ),
            Expanded(
              child: SmartRefresher(
                enablePullDown: true,
                enablePullUp: true,
                header: MyHeader(),
                footer: CustomFooter(
                  builder: (BuildContext context, LoadStatus mode) {
                    return MyFooter(mode);
                  },
                ),
                controller: _refreshController,
                onRefresh: refreshCoupon,
                onLoading: queryCoupon,
                physics: BouncingScrollPhysics(),
                child: ListView.builder(
                  itemBuilder: (context, position) {
                    return GestureDetector(
                      child: NewCouponWidget(coupons[position], (type) {
                        if (type == 1) {
                          receiveCoupon(coupons[position].id);
                        } else {
                          //Navigator.of(context).pushNamed('/router/mine_card')
                          showStoreSelector(coupons[position].storeList);
                        }
                      }, () {
                        setState(() {
                          coupons[position].isEx = !coupons[position].isEx;
                        });
                      }),
                    );
                  },
                  itemCount: coupons != null ? coupons.length : 0,
                ),
              ),
            )
          ],
        ),
      ),
    );
  }

  receiveCoupon(couponId) async {
    BaseData baseData = await apiService.receiveCoupon(couponId);
    if (baseData.isSuccess) {
      refreshCoupon();
      showAlertDialog();
    } else {
      Fluttertoast.showToast(msg: baseData.msg);
    }
  }

  showStoreSelector(storeList) {
    showModalBottomSheet(
        context: context,
        backgroundColor: Colors.transparent,
        builder: (context) {
          return SelectorStoreWidget(storeList);
        });
  }

  showAlertDialog() {
    //显示对话框
    showDialog(
      context: context,
      builder: (BuildContext context) {
        return SimpleDialog(
          titlePadding: EdgeInsets.all(10),
          backgroundColor: Colors.transparent,
          elevation: 0,
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.all(Radius.circular(6)),
          ),
          children: <Widget>[
            Stack(
              alignment: Alignment.topCenter,
              children: [
                Container(
                  margin: EdgeInsets.only(top: 40.h),
                  decoration: new BoxDecoration(
                      color: Colors.white,
                      borderRadius: BorderRadius.all(Radius.circular(8))),
                  width: 218.w,
                  height: 210.h,
                  child: Column(
                    children: [
                      Padding(
                        padding: EdgeInsets.only(top: 50.h, bottom: 19.h),
                        child: Text(
                          "领取成功",
                          style: TextStyle(
                            color: Color(0xff353535),
                            fontSize: 16.sp,
                            fontWeight: FontWeight.bold,
                          ),
                        ),
                      ),
                      Text(
                        "您已成功领取优惠劵，请在",
                        style: TextStyle(
                          color: Color(0xff353535),
                          fontSize: 14.sp,
                        ),
                      ),
                      Row(
                        mainAxisAlignment: MainAxisAlignment.center,
                        children: [
                          GestureDetector(
                            child: Text(
                              S.of(context).kaquan,
                              style: TextStyle(
                                color: Color(0xffFF7A1A),
                                fontSize: 14.sp,
                                fontWeight: FontWeight.bold,
                              ),
                            ),
                            onTap: () {
                              Navigator.of(context)
                                  .pushNamed('/router/mine_card');
                            },
                          ),
                          Text(
                            "中查看",
                            style: TextStyle(
                              color: Color(0xff353535),
                              fontSize: 14.sp,
                            ),
                          ),
                        ],
                      ),
                      Padding(
                        padding: EdgeInsets.only(top: 30.h),
                        child: RoundButton(
                          width: 130.w,
                          height: 34.h,
                          text: S.of(context).queren,
                          textColor: Colors.white,
                          fontSize: 12.sp,
                          callback: () {
                            Navigator.of(context).pop();
                          },
                          padding: EdgeInsets.only(
                            top: 2.h,
                            bottom: 2.h,
                            left: 8.w,
                            right: 8.w,
                          ),
                          backgroup: Color(0xff32A060),
                        ),
                      )
                    ],
                  ),
                ),
                Image.asset(
                  "assets/image/icon_order_success.png",
                  fit: BoxFit.cover,
                  width: 80.w,
                  height: 80.h,
                ),
              ],
            )
          ],
        );
      },
    );
  }
}