Fragment分类页面

向右看齐 2023-10-17 22:11 61阅读 0赞

例：

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FrgamenFenleiFragment 分类页面

public class FrgamenFenleiFragment extends Fragment {
        private View view;
        private RecyclerView mLeftrlv;
        private RecyclerView mRightrlv;
        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
            View inflate = inflater.inflate(R.layout.frgamen_fenlei, null);
            initView(inflate);
            return inflate;
        }
    
        @Override
        public void onViewCreated(View view, Bundle savedInstanceState) {
            super.onViewCreated(view, savedInstanceState);
            getleft();
            getright(1);
        }
    
        private void getleft() {
    
            String leftpath="https://www.zhaoapi.cn/product/getCatagory";
            mLeftrlv.setLayoutManager(new LinearLayoutManager(getActivity(), OrientationHelper.VERTICAL,false));
            OkHttp3Util_03.doGet(leftpath, new Callback() {
                @Override
                public void onFailure(Call call, IOException e) {
                }
    
                @Override
                public void onResponse(Call call, Response response) throws IOException {
                    String string = response.body().string();
                    final Left left = new Gson().fromJson(string, Left.class);
                    final List<Left.DataBean> data = left.getData();
                    getActivity().runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            LeftAdapter  leftAdapter=new LeftAdapter(getContext(),data);
                            mLeftrlv.setAdapter(leftAdapter);
                            leftAdapter.SetOnItemClickListener(new LeftAdapter.OnItemClickListener() {
                                @Override
                                public void onItemClick(int position) {
                                    int cid = data.get(position).getCid();
                                    getright(cid);
                                }
                            });
                        }
                    });
                }
            });
        }
    
        private void getright(final int right) {
            String    rightqian = "https://www.zhaoapi.cn/product/getProductCatagory?cid="+right;
            mRightrlv.setLayoutManager(new LinearLayoutManager(getActivity(), OrientationHelper.VERTICAL,false));
    
            OkHttp3Util_03.doGet(rightqian, new Callback() {
                @Override
                public void onFailure(Call call, IOException e) {
    
                }
    
                @Override
                public void onResponse(Call call, Response response) throws IOException {
                    String string = response.body().string();
                    RightOut rightOut = new Gson().fromJson(string, RightOut.class);
                    final List<RightOut.DataBean> data = rightOut.getData();
                    getActivity().runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            RightAdapter  rightAdapter = new RightAdapter(getActivity(),data);
                            mRightrlv.setAdapter(rightAdapter);
                        }
                    });
                }
            });
    
        }
        private void initView(View inflate) {
            mLeftrlv = (RecyclerView) inflate.findViewById(R.id.leftrlv);
            mRightrlv = (RecyclerView) inflate.findViewById(R.id.rightrlv);
        }
    }

frgamen_fenlei  分类页面布局

<?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="horizontal">
        <RelativeLayout
            android:layout_width="0dp"
            android:layout_weight="3"
            android:layout_height="match_parent">
            <android.support.v7.widget.RecyclerView
                android:layout_width="200dp"
                android:id="@+id/leftrlv"
                android:layout_centerHorizontal="true"
                android:layout_height="match_parent">
            </android.support.v7.widget.RecyclerView>
        </RelativeLayout>
        <RelativeLayout
            android:layout_width="0dp"
            android:layout_weight="7"
            android:layout_height="match_parent">
            <android.support.v7.widget.RecyclerView
                android:layout_width="600dp"
                android:id="@+id/rightrlv"
                android:layout_height="match_parent">
            </android.support.v7.widget.RecyclerView>
        </RelativeLayout>
    </LinearLayout>

OkHttp3Util\_03 网络工具类：

public class OkHttp3Util_03 {
        /**
         * 懒汉 安全 加同步
         * 1.私有的静态成员变量 只声明不创建
         * 2.私有的构造方法
         * 3.提供返回实例的静态方法
         */
        private static OkHttpClient okHttpClient = null;
        private OkHttp3Util_03() {
        }
        public static OkHttpClient getInstance() {
            if (okHttpClient == null) {
                //加同步安全
                synchronized (OkHttp3Util_03.class) {
                    if (okHttpClient == null) {
                        //okhttp可以缓存数据....指定缓存路径
                        File sdcache = new File(Environment.getExternalStorageDirectory(), "cache");
                        //指定缓存大小
                        int cacheSize = 10 * 1024 * 1024;
                        okHttpClient = new OkHttpClient.Builder()//构建器
                                .connectTimeout(15, TimeUnit.SECONDS)//连接超时
                                .writeTimeout(20, TimeUnit.SECONDS)//写入超时
                                .readTimeout(20, TimeUnit.SECONDS)//读取超时
                                .addInterceptor(new CommonParamsInterceptor())//添加应用拦截器的方法
                                .cache(new Cache(sdcache.getAbsoluteFile(), cacheSize))//设置缓存
                                .build();
                    }
                }
            }
            return okHttpClient;
        }
        /**
         * get请求
         * 参数1 url
         * 参数2 回调Callback
         *
         * oldUrl表示老的地址,,,是没封装公共参数之前的地址....公共参数指的是source=android
         *
         */
        public static void doGet(String oldUrl, Callback callback) {
            //创建OkHttpClient请求对象
            OkHttpClient okHttpClient = getInstance();
            //创建Request
            Request request = new Request.Builder().url(oldUrl).build();
            //得到Call对象
            Call call = okHttpClient.newCall(request);
            //执行异步请求
            call.enqueue(callback);
        }
        /**
         * post请求
         * 参数1 url
         * 参数2 Map<String, String> params post请求的时候给服务器传的数据
         *      add..("","")
         *      add()
         */
        public static void doPost(String url, Map<String, String> params, Callback callback) {
            //创建OkHttpClient请求对象
            OkHttpClient okHttpClient = getInstance();
            //3.x版本post请求换成FormBody 封装键值对参数
    
            FormBody.Builder builder = new FormBody.Builder();
            //遍历集合,,,map集合遍历方式
            for (String key : params.keySet()) {
                builder.add(key, params.get(key));
            }
    
            //创建Request....formBody...new formBody.Builder()...add()....build()
            Request request = new Request.Builder().url(url).post(builder.build()).build();
            Call call = okHttpClient.newCall(request);
            call.enqueue(callback);
        }
        /**
         * post请求上传文件....包括图片....流的形式传任意文件...
         * 参数1 url
         * file表示上传的文件
         * fileName....文件的名字,,例如aaa.jpg
         * params ....传递除了file文件 其他的参数放到map集合
         *
         */
        public static void uploadFile(String url, File file, String fileName,Map<String,String> params,Callback callback) {
            //创建OkHttpClient请求对象
            OkHttpClient okHttpClient = getInstance();
    
            //MultipartBody多功能的请求实体对象,,,formBody只能传表单形式的数据
            MultipartBody.Builder builder = new MultipartBody.Builder();
            builder.setType(MultipartBody.FORM);
    
            //参数
            if (params != null){
                for (String key : params.keySet()){
                    builder.addFormDataPart(key,params.get(key));
                }
            }
            //文件...参数name指的是请求路径中所接受的参数...如果路径接收参数键值是fileeeee,此处应该改变
            builder.addFormDataPart("file",fileName, RequestBody.create(MediaType.parse("application/octet-stream"),file));
            //构建
            MultipartBody multipartBody = builder.build();
            //创建Request
            Request request = new Request.Builder().url(url).post(multipartBody).build();
            //得到Call
            Call call = okHttpClient.newCall(request);
            //执行请求
            call.enqueue(callback);
        }
        /**
         * Post请求发送JSON数据....{"name":"zhangsan","pwd":"123456"}
         * 参数一：请求Url
         * 参数二：请求的JSON
         * 参数三：请求回调
         */
        public static void doPostJson(String url, String jsonParams, Callback callback) {
            RequestBody requestBody = RequestBody.create(MediaType.parse("application/json; charset=utf-8"), jsonParams);
            Request request = new Request.Builder().url(url).post(requestBody).build();
            Call call = getInstance().newCall(request);
            call.enqueue(callback);
        }
        /**
         * 下载文件 以流的形式把apk写入的指定文件 得到file后进行安装
         * 参数er：请求Url
         * 参数san：保存文件的文件夹....download
         */
        public static void download(final Activity context, final String url, final String saveDir) {
            //get请求
            Request request = new Request.Builder().url(url).build();
            Call call = getInstance().newCall(request);
            call.enqueue(new Callback() {
                @Override
                public void onFailure(Call call, IOException e) {
                    //com.orhanobut.logger.Logger.e(e.getLocalizedMessage());
                }
                @Override
                public void onResponse(Call call, final Response response) throws IOException {
                    InputStream is = null;
                    byte[] buf = new byte[2048];
                    int len = 0;
                    FileOutputStream fos = null;
                    try {
                        //response.body().string()...json限制是1M大小...byteStream()流的方式
                        is = response.body().byteStream();//以字节流的形式拿回响应实体内容
                        //apk保存路径
                        final String fileDir = isExistDir(saveDir);
                        //文件
                        File file = new File(fileDir, getNameFromUrl(url));
                        fos = new FileOutputStream(file);
                        while ((len = is.read(buf)) != -1) {
                            fos.write(buf, 0, len);
                        }
                        fos.flush();
                        context.runOnUiThread(new Runnable() {
                            @Override
                            public void run() {
                                Toast.makeText(context, "下载成功:" + fileDir + "," + getNameFromUrl(url), Toast.LENGTH_SHORT).show();
                            }
                        });
                        //apk下载完成后 调用系统的安装方法......覆盖安装,,,只有包名和签名的应用,并且版本和版本号升级后的才能安装
                        Intent intent = new Intent(Intent.ACTION_VIEW);
                        intent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive");
                        context.startActivity(intent);
                    } catch (IOException e) {
                        e.printStackTrace();
                    } finally {
                        if (is != null) is.close();
                        if (fos != null) fos.close();
                    }
                }
            });
        }
        /**
         * 判断下载目录是否存在......并返回绝对路径
         * @param saveDir
         * @return
         * @throws IOException
         */
        public static String isExistDir(String saveDir) throws IOException {
            // 下载位置
            if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
    
                File downloadFile = new File(Environment.getExternalStorageDirectory(), saveDir);
                if (!downloadFile.mkdirs()) {
                    downloadFile.createNewFile();
                }
                String savePath = downloadFile.getAbsolutePath();
                Log.e("savePath", savePath);
                return savePath;
            }
            return null;
        }
        /**
         * @param url
         * @return 从下载连接中解析出文件名
         */
        private static String getNameFromUrl(String url) {
            return url.substring(url.lastIndexOf("/") + 1);
        }
        /**
         * 封装公共参数的拦截器
         */
        private static class CommonParamsInterceptor implements Interceptor {
            //intercept方法就是拦截的意思....拦截的是一个请求,,,一旦拦截之后可以对请求的参数进行处理
            //Chain chain 链条的意思
            @Override
            public Response intercept(Chain chain) throws IOException {
                Log.e("----","拦截器------");
    
                //调用request()方法得到拦截的请求
                Request request = chain.request();
    
                //获取请求的方式
                String method = request.method();//GET POST
                //拦截的请求的路径
                String oldUrl = request.url().toString();
    
                //要添加的公共参数...map
                Map<String,String> map = new HashMap<>();
                map.put("source","android");
                if ("GET".equals(method)){
                    StringBuilder stringBuilder = new StringBuilder();//创建一个stringBuilder...字符串缓冲区
                    stringBuilder.append(oldUrl);
                    if (oldUrl.contains("?")){
                        //?在最后面....2类型
                        if (oldUrl.indexOf("?") == oldUrl.length()-1){
                        }else {
                            //3类型...拼接上&
                            stringBuilder.append("&");
                        }
                    }else {
                        //不包含? 属于1类型,,,先拼接上?号
                        stringBuilder.append("?");
                    }
    
                    //添加公共参数....source=android&appVersion=100&
                    for (Map.Entry<String,String> entry: map.entrySet()) {
                        //拼接
                        stringBuilder.append(entry.getKey())
                                .append("=")
                                .append(entry.getValue())
                                .append("&");
                    }
    
                    //删掉最后一个&符号
                    if (stringBuilder.indexOf("&") != -1){
                        stringBuilder.deleteCharAt(stringBuilder.lastIndexOf("&"));
                    }
                    //得到含有公共参数的新路径.....使用新路径去请求
                    String newUrl = stringBuilder.toString();
                    //新的路径构建一个新的请求
                    request = request.newBuilder().url(newUrl).build();
    
                }else if ("POST".equals(method)){
                    Log.e("--oldUrl--",oldUrl);
                    //参数在请求的实体内容上....拿到以前的参数,把以前的参数和公共参数全都添加到请求实体上
                    RequestBody requestBody = request.body();
                    if (requestBody instanceof FormBody){//前边是不是后边的子类/实例对象
                        FormBody oldBody = (FormBody) requestBody;//keywords...page
                        FormBody.Builder builder = new FormBody.Builder();
                        //先添加之前的参数
                        for (int i = 0;i<oldBody.size();i++){
                            //键值对的形式添加
                            builder.add(oldBody.name(i),oldBody.value(i));
                        }
                        //添加公共参数
                        for (Map.Entry<String,String> entry: map.entrySet()) {
                            builder.add(entry.getKey(),entry.getValue());
                        }
                        //构建一个新的请求
                        request = request.newBuilder().url(oldUrl).post(builder.build()).build();
                    }
                }
                //执行请求 获取到响应
                Response response = chain.proceed(request);
                return response;
            }
        }
    }

分类页面左边适配器：LeftAdapter

public class LeftAdapter extends RecyclerView.Adapter {
        private Context context;
        private List<Left.DataBean> data;
        private  OnItemClickListener onItemClickListener;
        public LeftAdapter(Context context, List<Left.DataBean> data) {
            this.context = context;
            this.data = data;
        }
        @NonNull
        @Override
        public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
            View view = LayoutInflater.from(context).inflate(R.layout.leftitem, null,false);
            LeftViewHloder vh=new LeftViewHloder(view);
            return vh;
        }
        @Override
        public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, final int position) {
            LeftViewHloder vh= (LeftViewHloder) holder;
            vh.leftitem.setText(data.get(position).getName());
            vh.leftitem.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    if (onItemClickListener!=null){
                        onItemClickListener.onItemClick(position);
                    }
                }
            });
        }
    
        @Override
        public int getItemCount() {
            return data.size();
        }
    
        private class LeftViewHloder extends RecyclerView.ViewHolder {
            private final TextView leftitem;
            public LeftViewHloder(View itemView) {
                super(itemView);
                leftitem = itemView.findViewById(R.id.leftitem);
            }
        }
        public   interface OnItemClickListener {
            void onItemClick(int position);
        }
        public void SetOnItemClickListener(OnItemClickListener onItemClickListener){
            this.onItemClickListener=onItemClickListener;
        }
    }

leftitem 左边适配器布局

<?xml version="1.0" encoding="utf-8"?>
    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:padding="10dp"
        android:layout_centerHorizontal="true"
        android:layout_height="match_parent">
        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="center"
            android:textSize="18sp"
            android:text="sdgffdhghfdga"
            android:id="@+id/leftitem" />
    </RelativeLayout>

Left 左边适配器网络请求Bean类：

public class Left {
        /**
         * msg :
         * code : 0
         * data : [{"cid":1,"createtime":"2017-10-10T19:41:39","icon":"http://120.27.23.105/images/category/shop.png","ishome":1,"name":"京东超市"},{"cid":2,"createtime":"2017-10-10T19:41:39","icon":"http://120.27.23.105/images/category/qqg.png","ishome":1,"name":"全球购"},{"cid":3,"createtime":"2017-10-10T19:45:11","icon":"http://120.27.23.105/images/category/phone.png","ishome":1,"name":"手机数码"},{"cid":5,"createtime":"2017-10-10T20:12:03","icon":"http://120.27.23.105/images/category/man.png","ishome":1,"name":"男装"},{"cid":6,"createtime":"2017-10-10T20:12:03","icon":"http://120.27.23.105/images/category/girl.png","ishome":1,"name":"女装"},{"cid":7,"createtime":"2017-10-10T20:12:03","icon":"http://120.27.23.105/images/category/manshoe.png","ishome":1,"name":"男鞋"},{"cid":8,"createtime":"2017-10-10T20:12:03","icon":"http://120.27.23.105/images/category/girlshoe.png","ishome":1,"name":"女鞋"},{"cid":9,"createtime":"2017-10-10T20:12:03","icon":"http://120.27.23.105/images/category/shirt.png","ishome":1,"name":"内衣配饰"},{"cid":10,"createtime":"2017-10-10T20:12:03","icon":"http://120.27.23.105/images/category/bag.png","ishome":1,"name":"箱包手袋"},{"cid":11,"createtime":"2017-10-10T20:12:03","icon":"http://120.27.23.105/images/category/beauty.png","ishome":1,"name":"美妆个护"},{"cid":12,"createtime":"2017-10-10T20:12:03","icon":"http://120.27.23.105/images/category/jewel.png","ishome":1,"name":"钟表珠宝"},{"cid":13,"createtime":"2017-10-10T20:12:03","icon":"http://120.27.23.105/images/category/luxury.png","ishome":1,"name":"奢侈品"},{"cid":14,"createtime":"2017-10-10T20:12:03","icon":"http://120.27.23.105/images/category/computer.png","ishome":1,"name":"电脑办公"},{"cid":15,"createtime":"2017-09-29T10:13:48","icon":"http://120.27.23.105/images/icon.png","ishome":0,"name":"家用电器"},{"cid":16,"createtime":"2017-09-29T10:13:48","icon":"http://120.27.23.105/images/icon.png","ishome":0,"name":"食品生鲜"},{"cid":17,"createtime":"2017-09-29T10:13:48","icon":"http://120.27.23.105/images/icon.png","ishome":0,"name":"酒水饮料"},{"cid":18,"createtime":"2017-09-29T10:13:48","icon":"http://120.27.23.105/images/icon.png","ishome":0,"name":"母婴童装"},{"cid":19,"createtime":"2017-09-29T10:13:48","icon":"http://120.27.23.105/images/icon.png","ishome":0,"name":"玩具乐器"},{"cid":20,"createtime":"2017-09-29T10:13:48","icon":"http://120.27.23.105/images/icon.png","ishome":0,"name":"医药保健"}]
         */
        private String msg;
        private String code;
        private List<DataBean> data;
        public String getMsg() {
            return msg;
        }
        public void setMsg(String msg) {
            this.msg = msg;
        }
        public String getCode() {
            return code;
        }
        public void setCode(String code) {
            this.code = code;
        }
        public List<DataBean> getData() {
            return data;
        }
        public void setData(List<DataBean> data) {
            this.data = data;
        }
        public static class DataBean {
            /**
             * cid : 1
             * createtime : 2017-10-10T19:41:39
             * icon : http://120.27.23.105/images/category/shop.png
             * ishome : 1
             * name : 京东超市
             */
            private int cid;
            private String createtime;
            private String icon;
            private int ishome;
            private String name;
            public int getCid() {
                return cid;
            }
            public void setCid(int cid) {
                this.cid = cid;
            }
            public String getCreatetime() {
                return createtime;
            }
            public void setCreatetime(String createtime) {
                this.createtime = createtime;
            }
            public String getIcon() {
                return icon;
            }
            public void setIcon(String icon) {
                this.icon = icon;
            }
            public int getIshome() {
                return ishome;
            }
            public void setIshome(int ishome) {
                this.ishome = ishome;
            }
            public String getName() {
                return name;
            }
            public void setName(String name) {
                this.name = name;
            }
        }
    }

RightOut 右边适配器Bean类：

public class RightOut {
        /**
         * msg : 获取子分类成功
         * code : 0
         * data : [{"cid":"1","list":[{"icon":"http://120.27.23.105/images/icon.png","name":"月饼","pcid":1,"pscid":1},{"icon":"http://120.27.23.105/images/icon.png","name":"坚果炒货","pcid":1,"pscid":2},{"icon":"http://120.27.23.105/images/icon.png","name":"糖巧","pcid":1,"pscid":3},{"icon":"http://120.27.23.105/images/icon.png","name":"休闲零食","pcid":1,"pscid":4},{"icon":"http://120.27.23.105/images/icon.png","name":"肉干肉脯","pcid":1,"pscid":5},{"icon":"http://120.27.23.105/images/icon.png","name":"饼干蛋糕","pcid":1,"pscid":6},{"icon":"http://120.27.23.105/images/icon.png","name":"蜜饯果干","pcid":1,"pscid":7},{"icon":"http://120.27.23.105/images/icon.png","name":"无糖食品","pcid":1,"pscid":8}],"name":"休闲零食","pcid":"1"},{"cid":"1","list":[{"icon":"http://120.27.23.105/images/icon.png","name":"新鲜水果","pcid":2,"pscid":9},{"icon":"http://120.27.23.105/images/icon.png","name":"海鲜水产","pcid":2,"pscid":10},{"icon":"http://120.27.23.105/images/icon.png","name":"精选肉类","pcid":2,"pscid":11},{"icon":"http://120.27.23.105/images/icon.png","name":"蛋类","pcid":2,"pscid":12},{"icon":"http://120.27.23.105/images/icon.png","name":"新鲜蔬菜","pcid":2,"pscid":13},{"icon":"http://120.27.23.105/images/icon.png","name":"冷冻食品","pcid":2,"pscid":14},{"icon":"http://120.27.23.105/images/icon.png","name":"饮品甜品","pcid":2,"pscid":15},{"icon":"http://120.27.23.105/images/icon.png","name":"大闸蟹","pcid":2,"pscid":16}],"name":"京东生鲜","pcid":"2"},{"cid":"1","list":[{"icon":"http://120.27.23.105/images/icon.png","name":"大米","pcid":3,"pscid":21},{"icon":"http://120.27.23.105/images/icon.png","name":"面粉","pcid":3,"pscid":22},{"icon":"http://120.27.23.105/images/icon.png","name":"杂粮","pcid":3,"pscid":23},{"icon":"http://120.27.23.105/images/icon.png","name":"食用油","pcid":3,"pscid":24},{"icon":"http://120.27.23.105/images/icon.png","name":"调味品","pcid":3,"pscid":25},{"icon":"http://120.27.23.105/images/icon.png","name":"方便速食","pcid":3,"pscid":26},{"icon":"http://120.27.23.105/images/icon.png","name":"有机食品","pcid":3,"pscid":27}],"name":"粮油调味","pcid":"3"},{"cid":"1","list":[{"icon":"http://120.27.23.105/images/icon.png","name":"饮用水","pcid":4,"pscid":28},{"icon":"http://120.27.23.105/images/icon.png","name":"饮料","pcid":4,"pscid":29},{"icon":"http://120.27.23.105/images/icon.png","name":"牛奶乳品","pcid":4,"pscid":30},{"icon":"http://120.27.23.105/images/icon.png","name":"名茶","pcid":4,"pscid":31},{"icon":"http://120.27.23.105/images/icon.png","name":"蜂蜜","pcid":4,"pscid":32}],"name":"水饮茗茶","pcid":"4"},{"cid":"1","list":[{"icon":"http://120.27.23.105/images/icon.png","name":"白酒","pcid":5,"pscid":33},{"icon":"http://120.27.23.105/images/icon.png","name":"葡萄酒","pcid":5,"pscid":34},{"icon":"http://120.27.23.105/images/icon.png","name":"洋酒","pcid":5,"pscid":35},{"icon":"http://120.27.23.105/images/icon.png","name":"啤酒","pcid":5,"pscid":36},{"icon":"http://120.27.23.105/images/icon.png","name":"黄酒","pcid":5,"pscid":37},{"icon":"http://120.27.23.105/images/icon.png","name":"陈年老酒","pcid":5,"pscid":38}],"name":"中外名酒","pcid":"5"}]
         */
        private String msg;
        private String code;
        private List<DataBean> data;
        public String getMsg() {
            return msg;
        }
        public void setMsg(String msg) {
            this.msg = msg;
        }
        public String getCode() {
            return code;
        }
        public void setCode(String code) {
            this.code = code;
        }
        public List<DataBean> getData() {
            return data;
        }
        public void setData(List<DataBean> data) {
            this.data = data;
        }
        public static class DataBean {
            /**
             * cid : 1
             * list : [{"icon":"http://120.27.23.105/images/icon.png","name":"月饼","pcid":1,"pscid":1},{"icon":"http://120.27.23.105/images/icon.png","name":"坚果炒货","pcid":1,"pscid":2},{"icon":"http://120.27.23.105/images/icon.png","name":"糖巧","pcid":1,"pscid":3},{"icon":"http://120.27.23.105/images/icon.png","name":"休闲零食","pcid":1,"pscid":4},{"icon":"http://120.27.23.105/images/icon.png","name":"肉干肉脯","pcid":1,"pscid":5},{"icon":"http://120.27.23.105/images/icon.png","name":"饼干蛋糕","pcid":1,"pscid":6},{"icon":"http://120.27.23.105/images/icon.png","name":"蜜饯果干","pcid":1,"pscid":7},{"icon":"http://120.27.23.105/images/icon.png","name":"无糖食品","pcid":1,"pscid":8}]
             * name : 休闲零食
             * pcid : 1
             */
            private String cid;
            private String name;
            private String pcid;
            private List<ListBean> list;
            public String getCid() {
                return cid;
            }
            public void setCid(String cid) {
                this.cid = cid;
            }
            public String getName() {
                return name;
            }
            public void setName(String name) {
                this.name = name;
            }
            public String getPcid() {
                return pcid;
            }
            public void setPcid(String pcid) {
                this.pcid = pcid;
            }
            public List<ListBean> getList() {
                return list;
            }
            public void setList(List<ListBean> list) {
                this.list = list;
            }
            public static class ListBean {
                /**
                 * icon : http://120.27.23.105/images/icon.png
                 * name : 月饼
                 * pcid : 1
                 * pscid : 1
                 */
                private String icon;
                private String name;
                private int pcid;
                private int pscid;
                public String getIcon() {
                    return icon;
                }
                public void setIcon(String icon) {
                    this.icon = icon;
                }
                public String getName() {
                    return name;
                }
                public void setName(String name) {
                    this.name = name;
                }
                public int getPcid() {
                    return pcid;
                }
                public void setPcid(int pcid) {
                    this.pcid = pcid;
                }
                public int getPscid() {
                    return pscid;
                }
                public void setPscid(int pscid) {
                    this.pscid = pscid;
                }
            }
        }
    }

右边适配器 RightAdapter

public class RightAdapter extends RecyclerView.Adapter {
        private Context context;
        private List<RightOut.DataBean> data;
        public RightAdapter(Context context, List<RightOut.DataBean> data) {
            this.context = context;
            this.data = data;
        }
        @NonNull
        @Override
        public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
            View view = LayoutInflater.from(context).inflate(R.layout.right, null,false);
            LeftViewHloder vh=new LeftViewHloder(view);
            return vh;
        }
        @Override
        public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, final int position) {
            LeftViewHloder vh= (LeftViewHloder) holder;
            vh.righttou.setText(data.get(position).getName());
            List<RightOut.DataBean.ListBean> rightzilist = data.get(position).getList();
            vh.rightzifen.setLayoutManager(new GridLayoutManager(context,3,GridLayoutManager.VERTICAL,false));
            RightZiAdapter  rightZiAdapter = new RightZiAdapter (context,rightzilist);
            vh.rightzifen.setAdapter(rightZiAdapter);
        }
        @Override
        public int getItemCount() {
            return data.size();
        }
        private class LeftViewHloder extends RecyclerView.ViewHolder {
            private final TextView righttou;
            private final RecyclerView rightzifen;
            public LeftViewHloder(View itemView) {
                super(itemView);
                righttou = itemView.findViewById(R.id.righttou);
                rightzifen = itemView.findViewById(R.id.rightzifen);
            }
        }
    }

right 右边适配器布局

<?xml version="1.0" encoding="utf-8"?>
    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/righttou"
            android:textSize="23sp"
            android:layout_centerHorizontal="true"
            android:text="sdgffdhghfdga" />
        <android.support.v7.widget.RecyclerView
            android:layout_below="@id/righttou"
            android:layout_width="match_parent"
            android:id="@+id/rightzifen"
            android:layout_height="wrap_content">
        </android.support.v7.widget.RecyclerView>
    </RelativeLayout>

右边子类适配器 RightZiAdapter

public class RightZiAdapter extends RecyclerView.Adapter {
        private Context context;
        private List<RightOut.DataBean.ListBean> rightzilist;
        public RightZiAdapter(Context context, List<RightOut.DataBean.ListBean> rightzilist) {
            this.context = context;
            this.rightzilist = rightzilist;
        }
        @Override
        public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
            View view = LayoutInflater.from(context).inflate(R.layout.rightzi, null,false);
            MyViewHloder viewHolderA = new MyViewHloder(view);
            return viewHolderA;
        }
        @Override
        public void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) {
            MyViewHloder vh= (MyViewHloder) holder;
            vh.t01.setText(rightzilist.get(position).getName());
            Uri uri =  Uri.parse(rightzilist.get(position).getIcon());
            DraweeController controller = Fresco.newDraweeControllerBuilder()
                    .setUri(uri)
                    .setAutoPlayAnimations(true)
                    .build();
            vh.img01 .setController(controller);
    
        }
        @Override
        public int getItemCount() {
            return rightzilist.size();
        }
        class  MyViewHloder extends RecyclerView.ViewHolder{
            private final TextView t01;
            private final SimpleDraweeView img01;
    
            public MyViewHloder(View itemView) {
                super(itemView);
                img01 = itemView.findViewById(R.id.zimg01 );
                t01 = itemView.findViewById(R.id.zt01);
            }
        }
    }

rightzi 右边子类适配器布局

<?xml version="1.0" encoding="utf-8"?>
    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:orientation="vertical"
        android:padding="10dp"
        android:layout_centerHorizontal="true"
        android:layout_height="match_parent">
        <com.facebook.drawee.view.SimpleDraweeView
            android:layout_width="50dp"
            android:layout_height="50dp"
            android:layout_centerHorizontal="true"
            android:id="@+id/zimg01" />
        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_below="@id/zimg01"
            android:gravity="center"
            android:id="@+id/zt01"
            android:text="sdgffdhghfdga" />
    </RelativeLayout>

[70]: https://img-blog.csdn.net/20180701214330158?watermark/2/text/aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2p1bl90b25n/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70