点餐（RecyclerView）

点餐（RecyclerView） 仿饿了么点餐页面

效果：

依赖：

implementation \'com.squareup.okhttp3:okhttp:3.12.0\'
implementation \'com.google.code.gson:gson:2.8.5\'
implementation \'com.github.bumptech.glide:glide:4.8.0\'
implementation \'com.android.support:recyclerview-v7:28.0.0\'

权限：

<uses-permission android:name=\"android.permission.INTERNET\"/>
<uses-permission android:name=\"android.permission.READ_EXTERNAL_STORAGE\"/>
<uses-permission android:name=\"android.permission.WRITE_EXTERNAL_STORAGE\"/>

一、Main

package gj.com.buycar.activity;

import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.ExpandableListView;
import android.widget.TextView;
import android.widget.Toast;

import java.util.List;

import gj.com.buycar.R;
import gj.com.buycar.adapter.LeftAdapter;
import gj.com.buycar.adapter.RightAdapter;
import gj.com.buycar.bean.Goods;
import gj.com.buycar.bean.Result;
import gj.com.buycar.bean.Shop;
import gj.com.buycar.core.DataCall;
import gj.com.buycar.presenter.CartPresenter;

/**
 * 仿饿了么点餐
 */
public class Frag03 extends Fragment implements DataCall<List<Shop>> {

    private RecyclerView mLeftRecycler;
    private RecyclerView mRightRecycler;
    private TextView mCount;
    private TextView mSumPrice;
    private LeftAdapter mLeftAdapter;
    private RightAdapter mRightAdapter;
    private CartPresenter cartPresenter;

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.frag03,container,false);
        //初始化组件
        mLeftRecycler = view.findViewById(R.id.left_recycler);
        mRightRecycler = view.findViewById(R.id.right_recycler);
        mCount = view.findViewById(R.id.goods_number);
        mSumPrice = view.findViewById(R.id.goods_sum_price);

        //设置recyclerview的布局管理器
        mLeftRecycler.setLayoutManager(new LinearLayoutManager(getContext()));
        mRightRecycler.setLayoutManager(new LinearLayoutManager(getContext()));

        mLeftAdapter = new LeftAdapter();
        mRightAdapter = new RightAdapter();
        //设置条目点击时间
        mLeftAdapter.setOnItemClickListenter(new LeftAdapter.OnItemClickListenter() {
            @Override
            public void onItemClick(Shop shop) {
                //首先 先清空原来的右侧数据
                mRightAdapter.clearList();//清空右侧数据
                //在根据点击的店铺条目重新添加数据到集合中
                mRightAdapter.addAll(shop.getList());//将店铺的商品集合传到右侧适配器
                //刷新适配器
                mRightAdapter.notifyDataSetChanged();
            }
        });
        mLeftRecycler.setAdapter(mLeftAdapter);//设置适配器
        mRightAdapter.setOnNumListener(new RightAdapter.OnNumListener() {
            @Override
            public void onNum() {
                calculatePrice(mLeftAdapter.getList());//设置总价和总数量
            }
        });

        //设置右半边适配器
        mRightRecycler.setAdapter(mRightAdapter);
        //调用P层请求数据
        cartPresenter = new CartPresenter(this);
        cartPresenter.requestData();
        return view;
    }

    /**
     * @author dingtao
     * @date 2018/12/18 7:01 PM
     * 计算总价格
     */
    private void calculatePrice(List<Shop> shopList){
        double totalPrice=0;
        int totalNum = 0;
        for (int i = 0; i < shopList.size(); i++) {//循环的商家
            Shop shop = shopList.get(i);
            for (int j = 0; j < shop.getList().size(); j++) {
                Goods goods = shop.getList().get(j);
                //计算价格
                totalPrice = totalPrice + goods.getNum() * goods.getPrice();
                totalNum+=goods.getNum();//计数
            }
        }
        mSumPrice.setText(\"价格：\"+totalPrice);
        mCount.setText(\"\"+totalNum);
    }

    @Override
    public void success(List<Shop> data) {
        calculatePrice(data);//计算价格和数量
        mLeftAdapter.addAll(data);//左边的添加类型

        //得到默认选中的shop，设置上颜色和背景
        Shop shop = data.get(1);
        shop.setTextColor(0xff000000);
        shop.setBackground(R.color.white);
        //根据左侧商铺给右侧添加集合
        mRightAdapter.addAll(shop.getList());

        //刷新适配器
        mLeftAdapter.notifyDataSetChanged();
        mRightAdapter.notifyDataSetChanged();
    }

    @Override
    public void fail(Result result) {
        Toast.makeText(getContext(), result.getCode() + \"   \" +
                result.getMsg(), Toast.LENGTH_LONG).show();
    }
}

二、main层布局

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


    <!--点餐系统-->
    <LinearLayout
        android:layout_width=\"match_parent\"
        android:layout_height=\"0dp\"
        android:layout_weight=\"1\"
        android:orientation=\"horizontal\">

        <android.support.v7.widget.RecyclerView
            android:id=\"@+id/left_recycler\"
            android:layout_width=\"80dp\"
            android:layout_height=\"match_parent\"
            android:background=\"@color/grayblack\"></android.support.v7.widget.RecyclerView>

        <android.support.v7.widget.RecyclerView
            android:id=\"@+id/right_recycler\"
            android:layout_width=\"0dp\"
            android:layout_weight=\"1\"
            android:layout_height=\"match_parent\"></android.support.v7.widget.RecyclerView>

    </LinearLayout>

    <RelativeLayout
        android:layout_width=\"match_parent\"
        android:layout_height=\"80dp\">

        <ImageView
            android:id=\"@+id/shop_car_image\"
            android:layout_width=\"wrap_content\"
            android:layout_height=\"wrap_content\"
            android:layout_centerVertical=\"true\"
            android:layout_marginLeft=\"10dp\"
            android:src=\"@drawable/gouwuc_r\"/>

        <TextView
            android:id=\"@+id/goods_number\"
            android:layout_width=\"30dp\"
            android:layout_height=\"30dp\"
            android:textSize=\"10sp\"
            android:gravity=\"center\"
            android:textColor=\"@color/white\"
            android:layout_marginLeft=\"-10dp\"
            android:background=\"@drawable/circle_red_bg\"
            android:layout_alignParentTop=\"true\"
            android:layout_toEndOf=\"@+id/shop_car_image\"
            android:text=\"6\"/>

        <TextView
            android:id=\"@+id/goods_sum_price\"
            android:layout_width=\"wrap_content\"
            android:layout_height=\"wrap_content\"
            android:layout_alignParentRight=\"true\"
            android:text=\"价格：￥1000\"
            android:layout_marginLeft=\"20dp\"
            android:layout_centerVertical=\"true\"/>

    </RelativeLayout>

</LinearLayout>

三、Main布局中用到的背景设置 circle_red_bg

<?  version=\"1.0\" encoding=\"utf-8\"?>
<shape  ns:android=\"http://schemas.android.com/apk/res/android\"
    android:shape=\"oval\">
    <!--圆形  加边框-->
    <solid
        android:color=\"#D81B60\"></solid>
</shape>

四、main中用到的左边适配器LeftAdapter

package gj.com.buycar.adapter;

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

import java.util.ArrayList;
import java.util.List;

import gj.com.buycar.R;
import gj.com.buycar.bean.Shop;

/**
 * 左半边的recyclerview
 */
public class LeftAdapter extends RecyclerView.Adapter<LeftAdapter.MyHolder> {

    //创建集合（店铺）
    List<Shop> mList = new ArrayList<>();



    @NonNull
    @Override
    public MyHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
        View view = View.inflate(viewGroup.getContext(),
                R.layout.recycler_left_item,null);
        MyHolder myHolder = new MyHolder(view);
        return myHolder;
    }

    @Override
    public void onBindViewHolder(@NonNull MyHolder myHolder, int i) {
        //找数据
        final Shop shop = mList.get(i);
        myHolder.text.setText(shop.getSellerName());//设置店铺名字
        //设置字体颜色和背景
        myHolder.text.setBackgroundResource(shop.getBackground());
        myHolder.text.setTextColor(shop.getTextColor());
        //设置条目点击事件
        myHolder.itemView.set Listener(new View. Listener() {
            @Override
            public void  (View v) {
                //设置字体的颜色
                for (int j = 0; j <mList.size() ; j++) {
                    mList.get(j).setTextColor(0xffffffff);//设置所有非点击条目的字体及背景
                    mList.get(j).setBackground(R.color.grayblack);
                }

                //点击的当前条目的背景及字体颜色
                shop.setBackground(R.color.white);
                shop.setTextColor(0xff000000);
                //刷新适配器
                notifyDataSetChanged();
                //点击完切换右边的列表
                onItemClickListenter.onItemClick(shop);
            }
        });
    }

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

    public List<Shop> getList() {
        return mList;
    }

    public void addAll(List<Shop> data) {
        mList.addAll(data);
    }

    public class MyHolder extends RecyclerView.ViewHolder {

        private final TextView text;

        public MyHolder(@NonNull View itemView) {
            super(itemView);
            //初始化组件
            text = itemView.findViewById(R.id.left_text);
        }
    }

    private OnItemClickListenter onItemClickListenter;

    public void setOnItemClickListenter(OnItemClickListenter onItemClickListenter) {
        this.onItemClickListenter = onItemClickListenter;
    }

    //自定义点击的接口 设置set方法
    public interface OnItemClickListenter{
        void onItemClick(Shop shop);
    }

}

五、左适配器用到的布局文件recycler_left_item

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

    <TextView
        android:id=\"@+id/left_text\"
        android:layout_width=\"100dp\"
        android:layout_height=\"50dp\"
        android:textSize=\"16sp\"
        android:gravity=\"center\"
        android:textColor=\"@color/white\"
        android:text=\"数据\"/>

</LinearLayout>

六、main中用到的右边适配器RightAdapter

package gj.com.buycar.adapter;

import android.support.annotation.NonNull;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

import com.bumptech.glide.Glide;

import java.util.ArrayList;
import java.util.List;

import gj.com.month_buycar.R;
import gj.com.buycar.bean.Goods;
import gj.com.buycar.core.GJApplication;
import gj.com.buycar.view.AddSubLayout;

/**
 * 右半边的recyclerview
 */
public class RightAdapter extends RecyclerView.Adapter<RightAdapter.ChildHolder> {

    //创建集合（商品店铺）
    List<Goods> mList = new ArrayList<>();


    @NonNull
    @Override
    public ChildHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
        View view = View.inflate(viewGroup.getContext(),R.layout.recycler_right_item,null);
        return new ChildHolder(view);
    }

    @Override
    public void onBindViewHolder(@NonNull ChildHolder childHolder, int i) {
        final Goods goods = mList.get(i);
        //获得商品后 开始赋值
        childHolder.text.setText(goods.get ());
        childHolder.price.setText(\"单价:\"+goods.getPrice());//单价

        //设置图片
        String imageurl = \"https\" + goods.getImages().split(\"https\")[1];
        Log.i(\"dt\", \"imageUrl: \" + imageurl);
        imageurl = imageurl.substring(0, imageurl.lastIndexOf(\".jpg\") + \".jpg\".length());
        Glide.with(GJApplication.getInstance()).
                load(imageurl).into(childHolder.image);//加载图片

        childHolder.addSub.setCount(goods.getNum());//设置商品数量
        childHolder.addSub.setAddSubLinstener(new AddSubLayout.AddSubLinstener() {
            @Override
            public void addSub(int count) {
                goods.setNum(count);
                onNumListener.onNum();//计算价格
            }
        });
    }

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

    public void clearList() {
        mList.clear();
    }

    public void addAll(List<Goods> list) {
        mList.addAll(list);
    }

    public class ChildHolder extends RecyclerView.ViewHolder {


        private final ImageView image;
        private final TextView text;
        private final TextView price;
        private final AddSubLayout addSub;

        public ChildHolder(@NonNull View itemView) {
            super(itemView);
            //初始化组件
            image = itemView.findViewById(R.id.image);
            text = itemView.findViewById(R.id.text);
            price = itemView.findViewById(R.id.text_price);
            addSub = itemView.findViewById(R.id.add_sub_layout);
        }
    }

    private OnNumListener onNumListener;

    public void setOnNumListener(OnNumListener onNumListener) {
        this.onNumListener = onNumListener;
    }

    public interface OnNumListener{
        void onNum();
    }
}

七、右适配器用到的布局文件recycler_right_item

<?  version=\"1.0\" encoding=\"utf-8\"?>
<RelativeLayout
     ns:android=\"http://schemas.android.com/apk/res/android\"
    android:layout_width=\"match_parent\"
    android:layout_height=\"wrap_content\"
    android:padding=\"10dp\"
    android:layout_marginLeft=\"10dp\"
    android:layout_marginRight=\"10dp\"
    android:background=\"@drawable/search_edit_bg\"
    android:orientation=\"horizontal\">

    <ImageView
        android:id=\"@+id/image\"
        android:layout_width=\"100dp\"
        android:layout_height=\"wrap_content\"
        android:adjustViewBounds=\"true\"
        android:minHeight=\"50dp\"
        android:layout_alignParentLeft=\"true\"
        android:src=\"@mipmap/ic_launcher\"/>

    <TextView
        android:id=\"@+id/text\"
        android:layout_toRightOf=\"@+id/image\"
        android:layout_width=\"match_parent\"
        android:layout_height=\"wrap_content\"
        android:layout_marginTop=\"10dp\"
        android:padding=\"10dp\"
        android:text=\"aa\"/>

    <TextView
        android:id=\"@+id/text_price\"
        android:layout_toRightOf=\"@+id/image\"
        android:layout_below=\"@+id/text\"
        android:layout_width=\"match_parent\"
        android:layout_height=\"wrap_content\"
        android:layout_marginTop=\"10dp\"
        android:text=\"价格\"
        android:padding=\"10dp\"/>

    <!--调用自定义控件 + - -->
    <gj.com.month_buycar.view.AddSubLayout
        android:id=\"@+id/add_sub_layout\"
        android:layout_width=\"wrap_content\"
        android:layout_height=\"wrap_content\"
        android:layout_alignParentRight=\"true\"
        android:layout_alignParentBottom=\"true\"
        android:layout_marginRight=\"50dp\"
        android:layout_marginBottom=\"50dp\"></gj.com.month_buycar.view.AddSubLayout>

</RelativeLayout>

八、右布局文件用到的背景search_edit_bg

<?  version=\"1.0\" encoding=\"utf-8\"?>
<shape  ns:android=\"http://schemas.android.com/apk/res/android\"
    android:shape=\"rectangle\">

    <!--设置圆角边框及颜色-->
    <corners android:radius=\"20dp\"/>

    <solid
        android:color=\"#d8d8d8\"/>

</shape>

九、右布局用到的AddSubLayout

package gj.com.buycar.view;

import android.content.Context;
import android.os.Build;
import android.support.annotation.RequiresApi;
import android.util.AttributeSet;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;

import gj.com.buycar.R;

public class AddSubLayout extends LinearLayout implements View. Listener {

    private TextView mAddBtn;
    private TextView mSubBtn;
    private TextView mNumText;

    public AddSubLayout(Context context) {
        super(context);
        initView();
    }

    public AddSubLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
        initView();
    }

    public AddSubLayout(Context context,AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        initView();
    }

    @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
    public AddSubLayout(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
        super(context, attrs, defStyleAttr, defStyleRes);
        initView();
    }

    //创建布局视图
    private void initView() {
        //加载layout布局，第三个参数ViewGroup一定写成this
        View view = View.inflate(getContext(),
                R.layout.car_add_sub_layout,this);

        //初始化组件
        mAddBtn = view.findViewById(R.id.btn_add);
        mSubBtn = view.findViewById(R.id.btn_sub);
        mNumText = view.findViewById(R.id.text_number);

        //设置加减的点击事件
        mAddBtn.set Listener(this);
        mSubBtn.set Listener(this);
    }

    @Override
    protected void onLayout(boolean changed, int l, int t, int r, int b) {
        super.onLayout(changed, l, t, r, b);

        int width = r-1;//getWidth();
        int hright = b-t;//getHeight();
    }

    @Override
    public void  (View v) {
        //得到数量的值
        int number = Integer.parseInt(mNumText.getText().toString());

        switch (v.getId()){
            case R.id.btn_add:
                number++;
                mNumText.setText(number+\"\");//赋值
                break;

            case R.id.btn_sub:
                if(number==0){
                    Toast.makeText(getContext(),\"数量不能小于0\",Toast.LENGTH_LONG).show();
                    return;
                }

                number--;
                mNumText.setText(number+\"\");//赋值
                break;
        }
        if(addSubLinstener!=null){
            addSubLinstener.addSub(number);
        }
    }

    public void setCount(int count){
        mNumText.setText(count+\"\");
    }

    AddSubLinstener addSubLinstener;

    public void setAddSubLinstener(AddSubLinstener addSubLinstener) {
        this.addSubLinstener = addSubLinstener;
    }

    public  interface AddSubLinstener{
        void addSub(int count);
    }
}

十、AddSubLayout用到的布局文件car_add_sub_layout

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

    <!--加减框-->
    <TextView
        android:id=\"@+id/btn_add\"
        android:layout_width=\"30dp\"
        android:layout_height=\"30dp\"
        android:background=\"@drawable/car_btn_bg\"
        android:focusable=\"false\"
        android:textSize=\"16sp\"
        android:gravity=\"center\"
        android:text=\"+\"/>

    <TextView
        android:id=\"@+id/text_number\"
        android:layout_width=\"60dp\"
        android:layout_height=\"30dp\"
        android:gravity=\"center\"
        android:textSize=\"14sp\"
        android:text=\"10\" />

    <TextView
        android:id=\"@+id/btn_sub\"
        android:layout_width=\"30dp\"
        android:layout_height=\"30dp\"
        android:textSize=\"16sp\"
        android:focusable=\"false\"
        android:gravity=\"center\"
        android:background=\"@drawable/car_btn_bg\"
        android:text=\"-\" />

</LinearLayout>

十一、car_add_sub_layout用到的背景文件car_btn_bg

<?  version=\"1.0\" encoding=\"utf-8\"?>
<shape  ns:android=\"http://schemas.android.com/apk/res/android\"
    android:shape=\"rectangle\">

    <!--加减框的圆角边框-->
    <corners
        android:radius=\"5dp\"></corners>

    <!--边框颜色-->
    <stroke
        android:color=\"@android:color/holo_red_dark\"
        android:width=\"2dp\"></stroke>

</shape>	

十二、接口

package gj.com.buycar.core;

import gj.com.buycar.bean.Result;

public interface DataCall<T> {
    void success(T data);
    void fail(Result result);
}

十三、右适配器用到的GJApplication

package gj.com.buycar.core;

import android.app.Application;
import android.content.Context;
import android.content.SharedPreferences;

public class GJApplication extends Application {

    private static GJApplication instance;
    private SharedPreferences mSharedPreferences;

    @Override
    public void onCreate() {
        super.onCreate();
        instance = this;
        mSharedPreferences = getSharedPreferences(\"application\",
                Context.MODE_PRIVATE);

    }

    public static GJApplication getInstance() {
        return instance;
    }

    public SharedPreferences getShare() {
        return mSharedPreferences;
    }
}

十四、P层 CartPresenter

package gj.com.buycar.presenter;

import gj.com.buycar.bean.Result;
import gj.com.buycar.core.DataCall;
import gj.com.buycar.model.CartModel;

public class CartPresenter extends  Presenter{
    public CartPresenter(DataCall dataCall) {
        super(dataCall);
    }

    @Override
    protected Result getData( ... args) {
        //调用网络请求获取数据M层
        Result result = CartModel.goodsList();
        return result;
    }
}

**十五、P层继承的 Presenter **

package gj.com.buycar.presenter;

import android.os.Handler;
import android.os.Message;

import gj.com.buycar.bean.Result;
import gj.com.buycar.core.DataCall;

public abstract class  Presenter {

    //接口
    DataCall dataCall;

    public  Presenter(DataCall dataCall) {
        this.dataCall = dataCall;
    }

    Handler mHandler = new Handler(){
        @Override
        public void handleMessage(Message msg) {
            Result result = (Result) msg.obj;
            //判断是否成功
            if(result.getCode()==0){
                //将商铺信息传过去
                dataCall.success(result.getData());
            }else{
                dataCall.fail(result);
            }
        }
    };

    //得到请求数据
    public void requestData(final  ...args){
        new Thread(new Runnable() {
            @Override
            public void run() {
                Message message = mHandler.obtainMessage();
                message.obj = getData(args);//定义一个抽象方法调用
                mHandler.sendMessage(message);
            }
        }).start();
    }

    protected abstract Result getData( ...args);

    //避免内存溢出
    public void unBindCall(){
        this.dataCall = null;
    }
}

**十六、M层 **

package gj.com.buycar.model;

import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;

import java.lang.reflect.Type;
import java.util.List;

import gj.com.buycar.bean.Result;
import gj.com.buycar.bean.Shop;
import gj.com.buycar.utils.HttpUtils;

public class CartModel {
    public static Result goodsList(){
        String resultString = HttpUtils.get(\"http://www.zhaoapi.cn/product/getCarts?uid=71\");

       //try {

        //注意了
        Type type = new TypeToken<Result<List<Shop>>>(){}.getType();

        Result result = new Gson().fromJson(resultString, type);
        return result;
    /*} catch (Exception e) {

    }
    Result result = new Result();
        result.setCode(-1);
        result.setMsg(\"数据解析异常\");
        return result;*/
    }
}

十七、OkHttp网络请求（包含get 和 post请求 可自行选择）

package gj.com.buycar.model;

import android.util.Log;

import java.io.File;
import java.io.IOException;

import okhttp3.FormBody;
import okhttp3.MediaType;
import okhttp3.MultipartBody;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.RequestBody;
import okhttp3.Response;

public class HttpUtils {
    public static String get(String urlString){

        OkHttpClient okHttpClient = new OkHttpClient();

        Request request = new Request.Builder().url(urlString).get().build();

        try {
            Response response = okHttpClient.newCall(request).execute();
            String result = response.body().string();
            Log.i(\"dt\",\"请求结果：\"+result);
            return result;
        } catch (IOException e) {
            e.printStackTrace();
        }
        return \"\";
    }

    public static String postForm(String url,String[] name,String[] value){

        OkHttpClient okHttpClient = new OkHttpClient();

        FormBody.Builder formBuild = new FormBody.Builder();
        for (int i = 0; i < name.length; i++) {
            formBuild.add(name[i],value[i]);
        }

        Request request = new Request.Builder().url(url).post(formBuild.build()).build();

        try {
            Response response = okHttpClient.newCall(request).execute();

            String result = response.body().string();
            Log.i(\"dt\",result);
            return result;
        } catch (IOException e) {
            e.printStackTrace();
        }
        return \"\";
    }

    public static String postFile(String url,String[] name,String[] value,String fileParamName,File file){

        OkHttpClient okHttpClient = new OkHttpClient();

        MultipartBody.Builder requestBody = new MultipartBody.Builder().setType(MultipartBody.FORM);
        if(file != null){
            // MediaType.parse() 里面是上传的文件类型。
            RequestBody body = RequestBody.create(MediaType.parse(\"image/*\"), file);
            String filename = file.getName();
            // 参数分别为: 文件参数名 ，文件名称 ， RequestBody
            requestBody.addFormDataPart(fileParamName, \"jpg\", body);
        }
        if (name!=null) {
            for (int i = 0; i < name.length; i++) {
                requestBody.addFormDataPart(name[i], value[i]);
            }
        }

        Request request = new Request.Builder().url(url).post(requestBody.build()).build();

        try {
            Response response = okHttpClient.newCall(request).execute();
            if (response.code()==200) {
                return response.body().string();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        return \"\";
    }

    public static String postJson(String url,String jsonString){

        OkHttpClient okHttpClient = new OkHttpClient();

        RequestBody requestBody = RequestBody.create(MediaType.parse(\"application/json\"),jsonString);

        Request request = new Request.Builder().url(url).post(requestBody).build();

        try {
            Response response = okHttpClient.newCall(request).execute();

            return response.body().string();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return \"\";
    }
}

十八、用到的三个Bean类

①Result

package gj.com.month_buycar.bean;

import java.util.List;

public class Result<T> {

    private int code;
    private String msg;
    private T data;

    public String getMsg() {
        return msg;
    }

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

    public int getCode() {
        return code;
    }

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

    public T getData() {
        return data;
    }

    public void setData(T data) {
        this.data = data;
    }
}

②Shop

package gj.com.month_buycar.bean;

import java.util.List;

import gj.com.month_buycar.R;

public class Shop {

        /**
         * list : []
         * sellerName :
         * sellerid : 0
         */
        //商品的bean 多写了三个东西 商品字体颜色 背景 选中状态
        private List<Goods> list;
        private String sellerName;
        private String sellerid;
        int textColor = 0xffffffff;
        int background = R.color.grayblack;

        boolean check;

        public String getSellerName() {
            return sellerName;
        }

        public void setSellerName(String sellerName) {
            this.sellerName = sellerName;
        }

        public String getSellerid() {
            return sellerid;
        }

        public void setSellerid(String sellerid) {
            this.sellerid = sellerid;
        }

        public List<Goods> getList() {
            return list;
        }

        public void setList(List<Goods> list) {
            this.list = list;
        }

        public int getTextColor() {
            return textColor;
        }

        public void setTextColor(int textColor) {
            this.textColor = textColor;
        }

        public int getBackground() {
            return background;
        }

        public void setBackground(int background) {
            this.background = background;
        }

        public boolean isCheck() {
            return check;
        }

        public void setCheck(boolean check) {
            this.check = check;
        }
}

③Goods

package gj.com.month_buycar.bean;

import java.io.Serializable;

public class Goods implements Serializable {


    private double bargainPrice;
    private String createtime;
    private String detailUrl;
    private String images;
    private int num;
    private int pid;
    private double price;
    private int pscid;
    private int selected;
    private int sellerid;
    private String subhead;
    private String  ;
    private int count = 1;//多加了一个 商品的count

    public int getCount() {
        return count;
    }

    public void setCount(int count) {
        this.count = count;
    }

    public double getBargainPrice() {
        return bargainPrice;
    }

    public void setBargainPrice(double bargainPrice) {
        this.bargainPrice = bargainPrice;
    }

    public String getCreatetime() {
        return createtime;
    }

    public void setCreatetime(String createtime) {
        this.createtime = createtime;
    }

    public String getDetailUrl() {
        return detailUrl;
    }

    public void setDetailUrl(String detailUrl) {
        this.detailUrl = detailUrl;
    }

    public String getImages() {
        return images;
    }

    public void setImages(String images) {
        this.images = images;
    }

    public int getNum() {
        return num;
    }

    public void setNum(int num) {
        this.num = num;
    }

    public int getPid() {
        return pid;
    }

    public void setPid(int pid) {
        this.pid = pid;
    }

    public double getPrice() {
        return price;
    }

    public void setPrice(double price) {
        this.price = price;
    }

    public int getPscid() {
        return pscid;
    }

    public void setPscid(int pscid) {
        this.pscid = pscid;
    }

    public int getSelected() {
        return selected;
    }

    public void setSelected(int selected) {
        this.selected = selected;
    }

    public int getSellerid() {
        return sellerid;
    }

    public void setSellerid(int sellerid) {
        this.sellerid = sellerid;
    }

    public String getSubhead() {
        return subhead;
    }

    public void setSubhead(String subhead) {
        this.subhead = subhead;
    }

    public String get () {
        return  ;
    }

    public void set (String  ) {
        this.  =  ;
    }
}