huixiang_app/lib/community/headlines/headlines_banner.dart

import 'dart:convert';

import 'package:flutter/material.dart';
import 'package:flutter_swiper_view/flutter_swiper_view.dart';
import 'package:huixiang/data/banner.dart';
import 'package:huixiang/retrofit/retrofit_api.dart';
import 'package:huixiang/view_widget/custom_image.dart';
import 'package:pull_to_refresh/pull_to_refresh.dart';

class HeadlinesBanner extends StatefulWidget {

  final List<BannerData> bannerData;

  HeadlinesBanner(this.bannerData);

  @override
  State<StatefulWidget> createState() {
    return _HeadlinesBanner();
  }

}

class _HeadlinesBanner extends State<HeadlinesBanner> {
  ApiService? apiService;
  final RefreshController refreshController = RefreshController();
  List<BannerData> bannerData = [];


  @override
  Widget build(BuildContext context) {
    return Container(
      child: AspectRatio(
        aspectRatio: 2.08,
        child: Swiper(
            viewportFraction: 0.88,
            scale: 0.93,
            pagination: SwiperPagination(
              alignment: Alignment.bottomCenter,
              builder: DotSwiperPaginationBuilder(
                size: 8,
                activeSize: 8,
                space: 5,
                activeColor: Colors.black,
                color: Colors.black.withAlpha(76),
              ),
            ),
            physics: BouncingScrollPhysics(),
            itemBuilder: (context, position) {
              return InkWell(
                onTap: () {
                  bannerClick(widget.bannerData[position]);
                },
                child: MImage(
                  (position < widget.bannerData.length)
                      ? "${widget.bannerData[position].imgUrl}"
                      : "",
                  fit: BoxFit.cover,
                  radius: BorderRadius.circular(8),
                  errorSrc: "assets/image/default_2_1.webp",
                  fadeSrc: "assets/image/default_2_1.webp",
                ),
              );
            },
            itemCount: (widget.bannerData.length > 0)
                ? widget.bannerData.length
                : 1),
      ),
    );
  }

  /// contentType     跳转类型（0：不跳转，1：积分商品，2：活动，3：文章,4:页面跳转,5:课程，7门店跳转）
  bannerClick(BannerData bannerData) async {
    switch (bannerData.contentType) {
      case 1:
        Navigator.of(context).pushNamed('/router/integral_store_page',
            arguments: {"goodsId": bannerData.content});
        break;
      case 2:
        Navigator.of(context)
            .pushNamed('/router/web_page', arguments: {
          "activityId": bannerData.content,
        });
        break;
      case 3:
        Navigator.of(context)
            .pushNamed('/router/web_page', arguments: {
          "articleId": bannerData.content,
        });
        break;
      case 4:
        String? router = bannerData.content;
        if (router?.isEmpty ?? true) {
          return;
        }
        if (router!.contains("?")) {
          String params = router.substring(router.indexOf("?"));
          params = params.replaceAll("?", "");
          Map map = jsonDecode(params);
          Navigator.of(context).pushNamed(router, arguments: map);
        } else {
          Navigator.of(context).pushNamed(router);
        }
        break;
      case 5:
        Navigator.of(context)
            .pushNamed('/router/class_details', arguments: {
          "id": bannerData.content,
        });
        break;
      case 7:
        String? router = bannerData.content;
        if (router?.isEmpty ?? true) {
          return;
        }
        String params = router!.substring(router.indexOf("?")+1);
        Map map = jsonDecode(params);
        Navigator.of(context).pushNamed(router.substring(0, router.indexOf("?")), arguments: map);
        break;
    }
  }
}