huixiang_app/lib/community/community_view/course_banner.dart

import 'dart:convert';

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

class CourseBanner extends StatefulWidget {

  final List<BannerData> bannerData;

  CourseBanner(this.bannerData);

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

}

class _CourseBanner extends State<CourseBanner> {
  @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(
                  (widget.bannerData != null && position < widget.bannerData.length)
                      ? widget.bannerData[position].imgUrl
                      : "",
                  fit: BoxFit.cover,
                  radius: BorderRadius.circular(8),
                  errorSrc: "assets/image/default_2_1.png",
                  fadeSrc: "assets/image/default_2_1.png",
                ),
              );
            },
            itemCount: (widget.bannerData != null && 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）
  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.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;
    }
  }



}