huixiang_app/lib/home/home_view/home_banner.dart

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';
import 'package:flutter_screenutil/flutter_screenutil.dart';

class HomeBanner extends StatefulWidget {

  final List<BannerData> bannerData;
  final SwiperController controller;

  HomeBanner(this.bannerData, this.controller);

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

}

class _HomeBanner extends State<HomeBanner> {
  @override
  Widget build(BuildContext context) {
    return Container(
      child: AspectRatio(
        aspectRatio: 2,
        child: Swiper(
          pagination: SwiperPagination(
            margin: EdgeInsets.only(bottom: 20.h),
            alignment: Alignment.bottomCenter,
            builder: DotSwiperPaginationBuilder(
              size: 8,
              activeSize: 8,
              space: 5,
              activeColor: Colors.white,
              color: Colors.white.withAlpha(76),
            ),
          ),
          controller: widget.controller,
          physics: BouncingScrollPhysics(),
          itemBuilder: (context, position) {
            return InkWell(
              onTap: () {
                bannerClick(widget.bannerData[position]);
              },
              child: Container(
                margin: EdgeInsets.all(16),
                decoration: BoxDecoration(
                  borderRadius: BorderRadius.circular(8),
                ),
                child: MImage(
                  (widget.bannerData != null && position < widget.bannerData.length)
                      ? widget.bannerData[position].imgUrl ?? ""
                      : "",
                  radius: BorderRadius.circular(8),
                  fit: BoxFit.cover,
                  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;
    }
  }


}