Banner轮播图的使用

首先添加依赖哦

 implementation files('libs\banner-2.1.0.aar')

接下来回到布局上面设置banner的属性 代码如下：

如果是网络请求数据的话可以这样写：

创建一个RetrofitClient的类，这里用retrofit的请求方法哦

public class  RetrofiClient {
    public static final String IP = "http://124.93.196.45:10091";

    private static Retrofit retrofit = new Retrofit.Builder()
//            网络请求url地址
            .baseUrl(IP)
//            网络请求适配器工厂的集合
            .addConverterFactory(GsonConverterFactory.create())

            .build();

    private RetrofiClient() {
    }

    public static Retrofit getRetrofit() {
        return retrofit;
    }

    public static APIService apiService() {
        return retrofit.create(APIService.class);
    }

   

}

在api的接口中写需要请求的地址：

 //获取轮播图数据
    @GET ("/prod-api/api/metro/rotation/list")
    Call getBeanDate();

上面的BannerBean是将要请求的数据的实体类

public class BannerBean {

    /**
     * total : 2
     * rows : [{"searchValue":null,"createBy":"admin","createTime":"2021-05-12 08:50:17","updateBy":"1","updateTime":"2021-05-12 09:07:33","remark":null,"params":{},"id":30,"appType":"metro","status":"1","sort":2,"advTitle":"地铁广告2","advImg":"/prod-api/profile/upload/image/2021/05/12/4a0fd4e7-2e01-420c-b89b-e39108d2f191.jpg","servModule":"新闻资讯","targetId":81,"type":"2"},{"searchValue":null,"createBy":"admin","createTime":"2021-05-12 09:12:51","updateBy":"1","updateTime":"2021-05-12 09:14:04","remark":null,"params":{},"id":33,"appType":"metro","status":"1","sort":3,"advTitle":"地铁广告3","advImg":"/prod-api/profile/upload/image/2021/05/12/aaa2ac1e-94da-4d0f-8077-8b1affa8c932.png","servModule":"新闻资讯","targetId":73,"type":"2"}]
     * code : 200
     * msg : 查询成功
     */

    private int total;
    private int code;
    private String msg;
    private List rows;

    public int getTotal() {
        return total;
    }

    public void setTotal(int total) {
        this.total = total;
    }

    public int getCode() {
        return code;
    }

    public void setCode(int code) {
        this.code = code;
    }

    public String getMsg() {
        return msg;
    }

    public void setMsg(String msg) {
        this.msg = msg;
    }

    public List getRows() {
        return rows;
    }

    public void setRows(List rows) {
        this.rows = rows;
    }

    public static class RowsBean {
        /**
         * searchValue : null
         * createBy : admin
         * createTime : 2021-05-12 08:50:17
         * updateBy : 1
         * updateTime : 2021-05-12 09:07:33
         * remark : null
         * params : {}
         * id : 30
         * appType : metro
         * status : 1
         * sort : 2
         * advTitle : 地铁广告2
         * advImg : /prod-api/profile/upload/image/2021/05/12/4a0fd4e7-2e01-420c-b89b-e39108d2f191.jpg
         * servModule : 新闻资讯
         * targetId : 81
         * type : 2
         */

        private Object searchValue;
        private String createBy;
        private String createTime;
        private String updateBy;
        private String updateTime;
        private Object remark;
        private ParamsBean params;
        private int id;
        private String appType;
        private String status;
        private int sort;
        private String advTitle;
        private String advImg;
        private String servModule;
        private int targetId;
        private String type;

        public Object getSearchValue() {
            return searchValue;
        }

        public void setSearchValue(Object searchValue) {
            this.searchValue = searchValue;
        }

        public String getCreateBy() {
            return createBy;
        }

        public void setCreateBy(String createBy) {
            this.createBy = createBy;
        }

        public String getCreateTime() {
            return createTime;
        }

        public void setCreateTime(String createTime) {
            this.createTime = createTime;
        }

        public String getUpdateBy() {
            return updateBy;
        }

        public void setUpdateBy(String updateBy) {
            this.updateBy = updateBy;
        }

        public String getUpdateTime() {
            return updateTime;
        }

        public void setUpdateTime(String updateTime) {
            this.updateTime = updateTime;
        }

        public Object getRemark() {
            return remark;
        }

        public void setRemark(Object remark) {
            this.remark = remark;
        }

        public ParamsBean getParams() {
            return params;
        }

        public void setParams(ParamsBean params) {
            this.params = params;
        }

        public int getId() {
            return id;
        }

        public void setId(int id) {
            this.id = id;
        }

        public String getAppType() {
            return appType;
        }

        public void setAppType(String appType) {
            this.appType = appType;
        }

        public String getStatus() {
            return status;
        }

        public void setStatus(String status) {
            this.status = status;
        }

        public int getSort() {
            return sort;
        }

        public void setSort(int sort) {
            this.sort = sort;
        }

        public String getAdvTitle() {
            return advTitle;
        }

        public void setAdvTitle(String advTitle) {
            this.advTitle = advTitle;
        }

        public String getAdvImg() {
            return advImg;
        }

        public void setAdvImg(String advImg) {
            this.advImg = advImg;
        }

        public String getServModule() {
            return servModule;
        }

        public void setServModule(String servModule) {
            this.servModule = servModule;
        }

        public int getTargetId() {
            return targetId;
        }

        public void setTargetId(int targetId) {
            this.targetId = targetId;
        }

        public String getType() {
            return type;
        }

        public void setType(String type) {
            this.type = type;
        }

        public static class ParamsBean {
        }
    }

最后，在HomeFragment.java中对布局中的banner进行初始化

 initView(); 
// 初始化
 private void initView() {
        banner = root.findViewById(R.id.banner);
       
    }

 接下来去获取轮播图

 getBeanDate();


/    获取轮播图
    private void getBeanDate() {
        RetrofiClient.apiService().getBeanDate().enqueue(new Callback() {
            @Override
            public void onResponse(Call call, Response response) {
                BannerBean body = response.body();
                if (body!=null && body.getCode()==200) {
                    mBannerList = body.getRows();
                    Log.i(TAG,"获取轮播图");
                    
//                    使用轮播图
                    userBanner();
                }
            }

            @Override
            public void onFailure(Call call, Throwable throwable) {

            }
        });
    }

 获取轮播图之后使用轮播图

/    使用轮播图
     private void userBanner(){
        banner.setAdapter(new BannerImageAdapter(mBannerList) {
            @Override
            public void onBindView(BannerImageHolder bannerImageHolder, BannerBean.RowsBean rowsBean, int i, int i1) {
                final  String IPP =IP+mBannerList.get(i).getAdvImg();
                Glide.with(getActivity().getApplicationContext())
                        .load(IP+mBannerList.get(i).getAdvImg())
                        .placeholder(R.mipmap.ic_launcher)
                        .apply(RequestOptions.bitmapTransform(new RoundedCorners(30)))
                        .into(bannerImageHolder.imageView);
                                Log.d(TAG, "onResponse: " + "使用轮播图222: IP = " + IPP);

            }

        })
                //        添加生命周期观察者

                .addBannerLifecycleObserver(this)
//                圆点指示器
                .setIndicator(new CircleIndicator(getActivity().getApplicationContext()));



     }

请求成功后就是这样的轮播图噢