列表

oneAdapter

package com.example.yougou.adapter;

import android.content.Context;
import android.support.annotation.NonNull;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import com.example.yougou.R;
import com.example.yougou.bean.ClassifyOne;


public class ClassifyOneAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {

    private Context context;
    private ClassifyOne classifyOne;

    public ClassifyOneAdapter(Context context, ClassifyOne classifyOne) {
        this.context = context;
        this.classifyOne = classifyOne;
    }

    @NonNull
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
        View view = LayoutInflater.from(context).inflate(R.layout.classifone, null, false);
        OneHolder oneHolder = new OneHolder(view);
        return oneHolder;
    }

    @Override
    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder viewHolder, final int i) {
        final OneHolder oneHolder = (OneHolder) viewHolder;
        oneHolder.text.setText(classifyOne.getResult().get(i).getName());
        oneHolder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String id = classifyOne.getResult().get(i).getId();
                onClassifyOneItemClick.OneItemData(id);
            }
        });
    }

    @Override
    public int getItemCount() {
        return classifyOne.getResult().size();
    }

    private class OneHolder extends RecyclerView.ViewHolder {

        private final TextView text;

        public OneHolder(@NonNull View itemView) {
            super(itemView);
            text = itemView.findViewById(R.id.one_text);
        }
    }

    public interface OnClassifyOneItemClick {
        void OneItemData(String id);
    }

    public OnClassifyOneItemClick onClassifyOneItemClick;

    public void setOnClassifyOneItemClick(OnClassifyOneItemClick onClassifyOneItemClick) {
        this.onClassifyOneItemClick = onClassifyOneItemClick;
    }
}

twoAdapter

package com.example.yougou.adapter;

import android.content.Context;
import android.os.Handler;
import android.support.annotation.NonNull;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import com.example.yougou.R;
import com.example.yougou.bean.ClassifyThreeBean;
import com.example.yougou.bean.ClassifyTwoBean;
import com.example.yougou.utils.OkHttpUtils;
import com.google.gson.Gson;

import java.io.IOException;
import java.util.List;

import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.Response;


public class ClassifyTwoAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {

    private Context context;
    private List<ClassifyTwoBean.ResultBean> list;
    private String classifyThreeUrl = "http://172.17.8.100/small/commodity/v1/findCommodityByCategory?page=1&count=6&categoryId=";
    private Handler handler = new Handler();

    public ClassifyTwoAdapter(Context context, List<ClassifyTwoBean.ResultBean> list) {
        this.context = context;
        this.list = list;
    }

    @NonNull
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
        View view = LayoutInflater.from(context).inflate(R.layout.classiftwo, null, false);
        TwoHolder twoHolder = new TwoHolder(view);
        return twoHolder;
    }

    @Override
    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder viewHolder, final int i) {
        final TwoHolder holder = (TwoHolder) viewHolder;
        holder.text.setText(list.get(i).getName());
        //设置样式
        GridLayoutManager gridLayoutManager = new GridLayoutManager(context, 3);
        holder.recycler.setLayoutManager(gridLayoutManager);
        //请求数据
        OkHttpUtils.getokHttpUtils().doGet(classifyThreeUrl + list.get(i).getId(), new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {

            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                final String string = response.body().string();
                Log.i("three", string);
                handler.post(new Runnable() {
                    @Override
                    public void run() {
                        Gson gson = new Gson();
                        ClassifyThreeBean classifyThreeBean = gson.fromJson(string, ClassifyThreeBean.class);
                        //设置适配器
                        ClassifyThreeAdapter classifyThreeAdapter = new ClassifyThreeAdapter(context, classifyThreeBean);
                        holder.recycler.setAdapter(classifyThreeAdapter);
                        classifyThreeAdapter.setOnClassifyThreeItemClick(new ClassifyThreeAdapter.OnClassifyThreeItemClick() {
                            @Override
                            public void ThreeItemData(String id) {
                                onClassifyTwoItemClick.TwoItemData(id);
                            }
                        });
                    }
                });
            }
        });

    }

    @Override
    public int getItemCount() {
        return list.size();
    }

    private class TwoHolder extends RecyclerView.ViewHolder {

        private final TextView text;
        private final RecyclerView recycler;

        public TwoHolder(@NonNull View itemView) {
            super(itemView);
            text = itemView.findViewById(R.id.two_text);
            recycler = itemView.findViewById(R.id.two_recycler);
        }
    }

    public interface OnClassifyTwoItemClick {
        void TwoItemData(String id);
    }

    public OnClassifyTwoItemClick onClassifyTwoItemClick;

    public void setOnClassifyOneItemClick(OnClassifyTwoItemClick onClassifyTwoItemClick) {
        this.onClassifyTwoItemClick = onClassifyTwoItemClick;
    }
}

threeAdapter

package com.example.yougou.adapter;

import android.content.Context;
import android.support.annotation.NonNull;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

import com.bumptech.glide.Glide;
import com.example.yougou.R;
import com.example.yougou.bean.ClassifyThreeBean;

/**
 * @Auther: 不懂
 * @Date: 2019/3/4 18:55:42
 * @Description:
 */
public class ClassifyThreeAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {

    private Context context;
    private ClassifyThreeBean classifyThreeBean;

    public ClassifyThreeAdapter(Context context, ClassifyThreeBean classifyThreeBean) {
        this.context = context;
        this.classifyThreeBean = classifyThreeBean;
    }

    @NonNull
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
        View view = LayoutInflater.from(context).inflate(R.layout.classifythree, null, false);
        ThreeHolder threeHolder = new ThreeHolder(view);
        return threeHolder;
    }

    @Override
    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder viewHolder, final int i) {
        final ThreeHolder holder = (ThreeHolder) viewHolder;
        holder.text.setText(classifyThreeBean.getResult().get(i).getCommodityName());
        Glide.with(context).load(classifyThreeBean.getResult().get(i).getMasterPic()).into(holder.image);
        holder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String commodityName = classifyThreeBean.getResult().get(i).getCommodityName();
                onClassifyThreeItemClick.ThreeItemData(commodityName);
            }
        });
    }

    @Override
    public int getItemCount() {
        return classifyThreeBean.getResult().size();
    }

    private class ThreeHolder extends RecyclerView.ViewHolder {

        private final ImageView image;
        private final TextView text;

        public ThreeHolder(@NonNull View itemView) {
            super(itemView);
            image = itemView.findViewById(R.id.three_image);
            text = itemView.findViewById(R.id.three_text);
        }
    }

    public interface OnClassifyThreeItemClick {
        void ThreeItemData(String id);
    }

    public OnClassifyThreeItemClick onClassifyThreeItemClick;

    public void setOnClassifyThreeItemClick(OnClassifyThreeItemClick onClassifyThreeItemClick) {
        this.onClassifyThreeItemClick = onClassifyThreeItemClick;
    }
}

twoitem

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <TextView
        android:id="@+id/two_text"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:background="#ff00"
        android:gravity="center"
        android:textSize="20sp" />

    <android.support.v7.widget.RecyclerView
        android:id="@+id/two_recycler"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

    </android.support.v7.widget.RecyclerView>


</LinearLayout>