mvp实现购物车

---

依赖

compile 'com.squareup.okhttp3:okhttp:3.9.0'
 compile 'com.google.code.gson:gson:2.8.2'
  compile 'com.github.bumptech.glide:glide:3.7.0'
  compile 'com.android.support:recyclerview-v7:26.0.0-alpha1'
  compile 'com.nostra13.universalimageloader:universal-image-loader:1.9.5'

---

权限

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

---

配置application的name属性,ImageLoader初始化

<application  
    android:name=".appli.App"  
</application> 

public class App extends Application{  
    @Override  
    public void onCreate() {  
        super.onCreate();  
        ImageLoaderConfiguration configuration = new ImageLoaderConfiguration.Builder(this).build();  
        ImageLoader.getInstance().init(configuration);  
    }  
}  

---

布局中需要用到的的布局,在drawable下面新建qujiesuan.xml

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

    <corners android:radius="200dp"/>  
    <solid android:color="#e53e42"/>  
    <size android:height="60dp" android:width="130dp"/>  
</shape>  

---

---

布局

custom_jiajian.xml

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

    <Button
        android:background="#fff"
        android:textSize="20sp"
        android:id="@+id/reverse"
        android:text="一"
        android:layout_width="50dp"
        android:layout_height="wrap_content" />

    <EditText
        android:textStyle="bold"
        android:textSize="23sp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="1"
        android:id="@+id/count"
        />

    <Button
        android:id="@+id/add"
        android:background="#fff"
        android:textSize="25sp"
        android:text="+"
        android:layout_width="50dp"
        android:layout_height="wrap_content" />



</LinearLayout>

---

recy_cart_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:orientation="vertical"
    android:padding="15dp"
    android:layout_height="match_parent">

    <LinearLayout
        android:orientation="horizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <CheckBox
            android:id="@+id/shop_checkbox"
            android:layout_width="50dp"
            android:layout_height="50dp" />

        <TextView
            android:layout_marginLeft="20dp"
            android:text="良品铺子"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textSize="23sp"
            android:textStyle="bold"
            android:id="@+id/shop_name"
            />
    </LinearLayout>

    <LinearLayout
        android:gravity="center_vertical"
        android:orientation="horizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <CheckBox
            android:id="@+id/item_checkbox"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

        <ImageView
            android:id="@+id/item_face"
            android:src="@mipmap/ic_launcher"
            android:layout_width="120dp"
            android:layout_height="120dp" />

        <LinearLayout
            android:layout_marginLeft="10dp"
            android:orientation="vertical"
            android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="wrap_content">

            <TextView
                android:id="@+id/item_name"
                android:textSize="20sp"
                android:text="三只松鼠"
                android:layout_width="wrap_content"
                android:layout_weight="1"
                android:layout_height="0dp"
                />

            <TextView
                android:textColor="#f00"
                android:id="@+id/item_price"
                android:textSize="23sp"
                android:text="299"
                android:layout_width="wrap_content"
                android:layout_height="0dp"
                android:layout_weight="1"
                />


            <com.bwie.shopcardemo.customview.CustomJiaJian
                android:id="@+id/custom_jiajian"
                android:layout_width="wrap_content"
                android:layout_height="0dp"
                android:layout_weight="1"
                />
        </LinearLayout>

        <ImageView
            android:id="@+id/item_delete"
            android:layout_marginRight="10dp"
            android:src="@drawable/shopcart_delete"
            android:layout_width="30dp"
            android:layout_height="30dp" />
    </LinearLayout>

</LinearLayout>

---

activity_main.xml

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

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

    <LinearLayout
        android:gravity="center_vertical"
        android:padding="10dp"
        android:orientation="horizontal"
        android:layout_alignParentBottom="true"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <CheckBox
            android:background="@drawable/shopcart_unselected"
            android:button="@null"
            android:id="@+id/quanxuan"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

        <TextView
            android:textStyle="bold"
            android:layout_marginLeft="10dp"
            android:textSize="23sp"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="全选"
            />

        <LinearLayout
            android:padding="10dp"
            android:layout_marginLeft="10dp"
            android:orientation="vertical"
            android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="wrap_content">

            <TextView
                android:textColor="#e53e42"
                android:id="@+id/total_price"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textSize="20sp"
                android:text="总价 : ¥0元"
                />

            <TextView
                android:id="@+id/total_num"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textSize="20sp"
                android:text="共0件商品"
                />

        </LinearLayout>

        <TextView
            android:gravity="center"
            android:textSize="25sp"
            android:text="去结算"
            android:textColor="#fff"
            android:background="@drawable/qujiesuan"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
    </LinearLayout>



</LinearLayout>

---

MainActivity

public class MainActivity extends AppCompatActivity implements ViewCallBack {

    private RecyclerView recyclerView;
    private TextView total_price;
    private TextView total_num;
    private CheckBox quanxuan;
    private MyPresenter myPresenter;
    private RecyAdapter recyAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //http://120.27.23.105/product/getCarts?uid=100

        recyclerView = (RecyclerView) findViewById(R.id.recycler_View);
        total_price = (TextView) findViewById(R.id.total_price);
        total_num = (TextView) findViewById(R.id.total_num);
        quanxuan = (CheckBox) findViewById(R.id.quanxuan);

        quanxuan.setTag(1);//1为不选中
        LinearLayoutManager manager = new LinearLayoutManager(MainActivity.this,LinearLayoutManager.VERTICAL,false);
        //new出适配器
        recyAdapter = new RecyAdapter(this);
        myPresenter = new MyPresenter(this);
        //调用presenter里面的请求数据的方法
        myPresenter.getData();

        recyclerView.setLayoutManager(manager);
        recyclerView.setAdapter(recyAdapter);

        //调用recyAdapter里面的接口,设置 全选按钮 总价 总数量
        recyAdapter.setUpdateListener(new RecyAdapter.UpdateListener() {
            @Override
            public void setTotal(String total, String num, boolean allCheck) {
                //设置ui的改变
                total_num.setText("共"+num+"件商品");//总数量
                total_price.setText("总价 :¥"+total+"元");//总价
                if(allCheck){
                    quanxuan.setTag(2);
                    quanxuan.setBackgroundResource(R.drawable.shopcart_selected);
                }else{
                    quanxuan.setTag(1);
                    quanxuan.setBackgroundResource(R.drawable.shopcart_unselected);
                }
                quanxuan.setChecked(allCheck);
            }
        });

        //这里只做ui更改, 点击全选按钮,,调到adapter里面操作
        quanxuan.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //调用adapter里面的方法 ,,把当前quanxuan状态传递过去

                int tag = (int) quanxuan.getTag();
                if(tag==1){
                    quanxuan.setTag(2);
                    quanxuan.setBackgroundResource(R.drawable.shopcart_selected);
                }else{
                    quanxuan.setTag(1);
                    quanxuan.setBackgroundResource(R.drawable.shopcart_unselected);
                }

                recyAdapter.quanXuan(quanxuan.isChecked());
            }
        });

    }


    //实现接口,重写的方法
    @Override
    public void success(CartBean cartBean) {
        //拿到返回来的数据 ,, 传给适配器数据
        recyAdapter.add(cartBean);
    }

    @Override
    public void failure(final Exception e) {
        runOnUiThread(new Runnable() {
            @Override
            public void run() {
                Toast.makeText(MainActivity.this,"error",Toast.LENGTH_SHORT).show();
            }
        });
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        //调用p层的解除绑定
        myPresenter.detach();
    }
}

---

adapter包

---

RecyAdapter

public class RecyAdapter extends RecyclerView.Adapter<RecyAdapter.MyViewHolder>{

    Context context;
    //创建大的集合
    private List<CartBean.DataBean.ListBean> list;

    //存放商家的id和商家的名称的map集合
    private Map<String,String> map = new HashMap<>();

    public RecyAdapter(Context context) {
        this.context = context;
    }

    /**
     * 添加数据并更新显示
     * */
    public void add(CartBean cartBean){
        //传进来的是bean对象
        if(list == null){
            list = new ArrayList<>();
        }
        //第一层遍历商家和商品
        for (CartBean.DataBean shop : cartBean.getData()){
            //把商品的id和商品的名称添加到map集合里 ,,为了之后方便调用
            map.put(shop.getSellerid(),shop.getSellerName());
            //第二层遍历里面的商品
            for (int i=0;i<shop.getList().size();i++){
                //添加到list集合里
                list.add(shop.getList().get(i));
            }
        }
        //调用方法 设置显示或隐藏 商铺名
        setFirst(list);
        notifyDataSetChanged();
    }

    /**
     * 设置数据源,控制是否显示商家
     * */
    private void setFirst(List<CartBean.DataBean.ListBean> list) {

        if(list.size()>0){
            //如果是第一条数据就设置isFirst为1
            list.get(0).setIsFirst(1);
            //从第二条开始遍历
            for (int i=1;i<list.size();i++){
                //如果和前一个商品是同一家商店的
                if (list.get(i).getSellerid() == list.get(i-1).getSellerid()){
                    //设置成2不显示商铺
                    list.get(i).setIsFirst(2);
                }else{//设置成1显示商铺
                    list.get(i).setIsFirst(1);
                    //如果当前条目选中,把当前的商铺也选中
                    if (list.get(i).isItem_check()==true){
                        list.get(i).setShop_check(list.get(i).isItem_check());
                    }
                }
            }
        }
    }

    @Override
    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = View.inflate(context, R.layout.recy_cart_item,null);
        MyViewHolder myViewHolder = new MyViewHolder(view);
        return myViewHolder;
    }

    @Override
    public void onBindViewHolder(final MyViewHolder holder, final int position) {

        /**
         * 设置商铺的 shop_checkbox和商铺的名字 显示或隐藏
         * */
        if(list.get(position).getIsFirst()==1){
            //显示商家
            holder.shop_checkbox.setVisibility(View.VISIBLE);
            holder.shop_name.setVisibility(View.VISIBLE);
            //设置shop_checkbox的选中状态
            holder.shop_checkbox.setChecked(list.get(position).isShop_check());
            holder.shop_name.setText(map.get(String.valueOf(list.get(position).getSellerid())));
        }else{//2
            //隐藏商家
            holder.shop_name.setVisibility(View.GONE);
            holder.shop_checkbox.setVisibility(View.GONE);
        }

        //拆分images字段
        String[] split = list.get(position).getImages().split("\\|");
        //设置商品的图片
        ImageLoader.getInstance().displayImage(split[0],holder.item_face);
        //控制商品的item_checkbox,,根据字段改变
        holder.item_checkbox.setChecked(list.get(position).isItem_check());
        holder.item_name.setText(list.get(position).getTitle());
        holder.item_price.setText(list.get(position).getPrice()+"");
        //调用customjiajian里面的方法设置 加减号中间的数字
        holder.customJiaJian.setEditText(list.get(position).getNum());

        //商铺的shop_checkbox点击事件 ,控制商品的item_checkbox
        holder.shop_checkbox.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //先改变数据源中的shop_check
                list.get(position).setShop_check(holder.shop_checkbox.isChecked());

                for (int i=0;i<list.size();i++){
                    //如果是同一家商铺的 都给成相同状态
                    if(list.get(position).getSellerid()==list.get(i).getSellerid()){
                        //当前条目的选中状态 设置成 当前商铺的选中状态
                        list.get(i).setItem_check(holder.shop_checkbox.isChecked());
                    }
                }
                //刷新适配器
                notifyDataSetChanged();
                //调用求和的方法
                sum(list);
            }
        });

        //商品的item_checkbox点击事件,控制商铺的shop_checkbox
        holder.item_checkbox.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //先改变数据源中的item_checkbox
                list.get(position).setItem_check(holder.item_checkbox.isChecked());

                //反向控制商铺的shop_checkbox
                for (int i=0;i<list.size();i++){
                    for (int j=0;j<list.size();j++){
                        //如果两个商品是同一家店铺的 并且 这两个商品的item_checkbox选中状态不一样
                        if(list.get(i).getSellerid()==list.get(j).getSellerid() && !list.get(j).isItem_check()){
                            //就把商铺的shop_checkbox改成false
                            list.get(i).setShop_check(false);
                            break;
                        }else{
                            //同一家商铺的商品 选中状态都一样,就把商铺shop_checkbox状态改成true
                            list.get(i).setShop_check(true);
                        }
                    }
                }

                //更新适配器
                notifyDataSetChanged();
                //调用求和的方法
                sum(list);
            }
        });

        //删除条目的点击事件
        holder.item_delete.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                list.remove(position);//移除集合中的当前数据
                //删除完当前的条目 重新判断商铺的显示隐藏
                setFirst(list);

                //调用重新求和
                sum(list);
                notifyDataSetChanged();
            }
        });

        //加减号的监听,
        holder.customJiaJian.setCustomListener(new CustomJiaJian.CustomListener() {
            @Override
            public void jiajian(int count) {
                //改变数据源中的数量
                list.get(position).setNum(count);
                notifyDataSetChanged();
                sum(list);
            }

            @Override
            //输入值 求总价
            public void shuRuZhi(int count) {
                list.get(position).setNum(count);
                notifyDataSetChanged();
                sum(list);
            }
        });
    }

    /**
     * 计算总价的方法
     * */
    private void sum(List<CartBean.DataBean.ListBean> list){
        int totalNum = 0;//初始的总价为0
        float totalMoney = 0.0f;
        boolean allCheck = true;
        for (int i=0;i<list.size();i++){
            //把 已经选中的 条目 计算价格
            if (list.get(i).isItem_check()){
                totalNum += list.get(i).getNum();
                totalMoney += list.get(i).getNum() * list.get(i).getPrice();
            }else{
                //如果有个未选中,就标记为false
                allCheck = false;
            }
        }

        //接口回调出去 把总价 总数量 和allcheck 传给view层
        updateListener.setTotal(totalMoney+"",totalNum+"",allCheck);
    }

    //view层调用这个方法, 点击quanxuan按钮的操作
    public void quanXuan(boolean checked) {
        for (int i=0;i<list.size();i++){
            list.get(i).setShop_check(checked);
            list.get(i).setItem_check(checked);

        }
        notifyDataSetChanged();
        sum(list);
    }

    @Override
    public int getItemCount() {
        return list==null?0:list.size();
    }



    public static class MyViewHolder extends RecyclerView.ViewHolder {

        private final CheckBox shop_checkbox;
        private final TextView shop_name;
        private final CheckBox item_checkbox;
        private final TextView item_name;
        private final TextView item_price;
        private final CustomJiaJian customJiaJian;
        private final ImageView item_delete;
        private final ImageView item_face;

        public MyViewHolder(View itemView) {
            super(itemView);
            shop_checkbox = (CheckBox) itemView.findViewById(R.id.shop_checkbox);
            shop_name = (TextView) itemView.findViewById(R.id.shop_name);
            item_checkbox = (CheckBox) itemView.findViewById(R.id.item_checkbox);
            item_name = (TextView) itemView.findViewById(R.id.item_name);
            item_price = (TextView) itemView.findViewById(R.id.item_price);
            customJiaJian = (CustomJiaJian) itemView.findViewById(R.id.custom_jiajian);
            item_delete = (ImageView) itemView.findViewById(R.id.item_delete);
            item_face = (ImageView) itemView.findViewById(R.id.item_face);
        }
    }

    UpdateListener updateListener;
    public void setUpdateListener(UpdateListener updateListener){
        this.updateListener = updateListener;
    }
    //接口
    public interface UpdateListener{
        public void setTotal(String total,String num,boolean allCheck);
    }
}

---

bean包

---

CartBean

接口：https://www.zhaoapi.cn/product/getCarts?uid=4861&source=android

单独在CartBean里面添加：

//自己添加的三个字段  ，用来判断checkBox的选中状态
           private int isFirst = 1;//1为显示商铺, 2为隐藏商铺  
           private boolean item_check;//每个商品的选中状态  
           private boolean shop_check;//商店的选中状态  

           public int getIsFirst() {  
               return isFirst;  
           }  

           public void setIsFirst(int isFirst) {  
               this.isFirst = isFirst;  
           }  

           public boolean isItem_check() {  
               return item_check;  
           }  

           public void setItem_check(boolean item_check) {  
               this.item_check = item_check;  
           }  

           public boolean isShop_check() {  
               return shop_check;  
           }  

           public void setShop_check(boolean shop_check) {  
               this.shop_check = shop_check;  
           }  

---

public class CartBean {


    /**
     * msg : 请求成功
     * code : 0
     * data : [{"list":[{"bargainPrice":111.99,"createtime":"2017-10-03T23:53:28","detailUrl":"https://item.m.jd.com/product/4719303.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t9004/210/1160833155/647627/ad6be059/59b4f4e1N9a2b1532.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7504/338/63721388/491286/f5957f53/598e95f1N7f2adb87.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7441/10/64242474/419246/adb30a7d/598e95fbNd989ba0a.jpg!q70.jpg","num":1,"pid":8,"price":324,"pscid":1,"selected":0,"sellerid":1,"subhead":"每个中秋都不能简单，无论身在何处，你总需要一块饼让生活更圆满，京东月饼让爱更圆满京东自营，闪电配送，更多惊喜，快用手指戳一下","title":"北京稻香村 稻香村中秋节月饼 老北京月饼礼盒655g"}],"sellerName":"商家1","sellerid":"1"},{"list":[{"bargainPrice":22.9,"createtime":"2017-10-03T23:53:28","detailUrl":"https://item.m.jd.com/product/2542855.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t1930/284/2865629620/390243/e3ade9c4/56f0a08fNbd3a1235.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t2137/336/2802996626/155915/e5e90d7a/56f0a09cN33e01bd0.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t1882/31/2772215910/389956/c8dbf370/56f0a0a2Na0c86ea6.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t2620/166/2703833710/312660/531aa913/57709035N33857877.jpg!q70.jpg","num":1,"pid":26,"price":88,"pscid":2,"selected":0,"sellerid":3,"subhead":"三只松鼠零食特惠，专区满99减50，满199减100，火速抢购》","title":"三只松鼠 坚果炒货 零食奶油味 碧根果225g/袋"}],"sellerName":"商家3","sellerid":"3"},{"list":[{"bargainPrice":1999,"createtime":"2017-10-10T16:09:02","detailUrl":"https://item.m.jd.com/product/5025971.html?utm#_source=androidapp&utm#_medium=appshare&utm#_campaign=t#_335139774&utm#_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t7210/232/3738666823/232298/9004583e/59c3a9a7N8de42e15.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t8356/82/2107423621/109733/c019b8c6/59c3a9a6Ne9a4bdd7.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t10219/74/25356012/171379/7d55e296/59c3a9a8N82fa6e02.jpg!q70.jpg","num":1,"pid":49,"price":333,"pscid":39,"selected":0,"sellerid":5,"subhead":"vivo X20 带你开启全面屏时代！逆光也清晰，照亮你的美！","title":"vivo X20 全面屏手机 全网通 4GB+64GB 金色 移动联通电信4G手机 双卡双待"}],"sellerName":"商家5","sellerid":"5"},{"list":[{"bargainPrice":11800,"createtime":"2017-10-03T23:53:28","detailUrl":"https://mitem.jd.hk/ware/view.action?wareId=1988853309&cachekey=1acb07a701ece8d2434a6ae7fa6870a1","images":"https://m.360buyimg.com/n0/jfs/t6130/97/1370670410/180682/1109582a/593276b1Nd81fe723.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5698/110/2617517836/202970/c9388feb/593276b7Nbd94ef1f.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5698/110/2617517836/202970/c9388feb/593276b7Nbd94ef1f.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5815/178/2614671118/51656/7f52d137/593276c7N107b725a.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5878/60/2557817477/30873/4502b606/593276caN5a7d6357.jpg!q70.jpg","num":1,"pid":62,"price":15999,"pscid":40,"selected":0,"sellerid":6,"subhead":"购买电脑办公部分商品满1元返火车票5元优惠券（返完即止）","title":"全球购 新款Apple MacBook Pro 苹果笔记本电脑 银色VP2新13英寸Bar i5/8G/256G"}],"sellerName":"商家6","sellerid":"6"},{"list":[{"bargainPrice":111.99,"createtime":"2017-10-14T21:39:05","detailUrl":"https://item.m.jd.com/product/4719303.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t9004/210/1160833155/647627/ad6be059/59b4f4e1N9a2b1532.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7504/338/63721388/491286/f5957f53/598e95f1N7f2adb87.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7441/10/64242474/419246/adb30a7d/598e95fbNd989ba0a.jpg!q70.jpg","num":1,"pid":20,"price":599,"pscid":1,"selected":0,"sellerid":13,"subhead":"每个中秋都不能简单，无论身在何处，你总需要一块饼让生活更圆满，京东月饼让爱更圆满京东自营，闪电配送，更多惊喜，快用手指戳一下","title":"北京稻香村 稻香村中秋节月饼 老北京月饼礼盒655g"}],"sellerName":"商家13","sellerid":"13"},{"list":[{"bargainPrice":111.99,"createtime":"2017-10-14T21:48:08","detailUrl":"https://item.m.jd.com/product/4719303.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t9004/210/1160833155/647627/ad6be059/59b4f4e1N9a2b1532.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7504/338/63721388/491286/f5957f53/598e95f1N7f2adb87.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7441/10/64242474/419246/adb30a7d/598e95fbNd989ba0a.jpg!q70.jpg","num":1,"pid":22,"price":799,"pscid":1,"selected":0,"sellerid":15,"subhead":"每个中秋都不能简单，无论身在何处，你总需要一块饼让生活更圆满，京东月饼让爱更圆满京东自营，闪电配送，更多惊喜，快用手指戳一下","title":"北京稻香村 稻香村中秋节月饼 老北京月饼礼盒655g"}],"sellerName":"商家15","sellerid":"15"},{"list":[{"bargainPrice":111.99,"createtime":"2017-10-14T21:39:05","detailUrl":"https://item.m.jd.com/product/4719303.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t9004/210/1160833155/647627/ad6be059/59b4f4e1N9a2b1532.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7504/338/63721388/491286/f5957f53/598e95f1N7f2adb87.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7441/10/64242474/419246/adb30a7d/598e95fbNd989ba0a.jpg!q70.jpg","num":1,"pid":1,"price":118,"pscid":1,"selected":0,"sellerid":17,"subhead":"每个中秋都不能简单，无论身在何处，你总需要一块饼让生活更圆满，京东月饼让爱更圆满京东自营，闪电配送，更多惊喜，快用手指戳一下","title":"北京稻香村 稻香村中秋节月饼 老北京月饼礼盒655g"}],"sellerName":"商家17","sellerid":"17"},{"list":[{"bargainPrice":111.99,"createtime":"2017-10-14T21:39:05","detailUrl":"https://item.m.jd.com/product/4719303.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t9004/210/1160833155/647627/ad6be059/59b4f4e1N9a2b1532.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7504/338/63721388/491286/f5957f53/598e95f1N7f2adb87.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7441/10/64242474/419246/adb30a7d/598e95fbNd989ba0a.jpg!q70.jpg","num":1,"pid":5,"price":88.99,"pscid":1,"selected":0,"sellerid":21,"subhead":"每个中秋都不能简单，无论身在何处，你总需要一块饼让生活更圆满，京东月饼让爱更圆满京东自营，闪电配送，更多惊喜，快用手指戳一下","title":"北京稻香村 稻香村中秋节月饼 老北京月饼礼盒655g"}],"sellerName":"商家21","sellerid":"21"}]
     */

    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 {
        /**
         * list : [{"bargainPrice":111.99,"createtime":"2017-10-03T23:53:28","detailUrl":"https://item.m.jd.com/product/4719303.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t9004/210/1160833155/647627/ad6be059/59b4f4e1N9a2b1532.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7504/338/63721388/491286/f5957f53/598e95f1N7f2adb87.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7441/10/64242474/419246/adb30a7d/598e95fbNd989ba0a.jpg!q70.jpg","num":1,"pid":8,"price":324,"pscid":1,"selected":0,"sellerid":1,"subhead":"每个中秋都不能简单，无论身在何处，你总需要一块饼让生活更圆满，京东月饼让爱更圆满京东自营，闪电配送，更多惊喜，快用手指戳一下","title":"北京稻香村 稻香村中秋节月饼 老北京月饼礼盒655g"}]
         * sellerName : 商家1
         * sellerid : 1
         */

        private String sellerName;
        private String sellerid;
        private List<ListBean> list;

        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<ListBean> getList() {
            return list;
        }

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

        public static class ListBean {
            /**
             * bargainPrice : 111.99
             * createtime : 2017-10-03T23:53:28
             * detailUrl : https://item.m.jd.com/product/4719303.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends
             * images : https://m.360buyimg.com/n0/jfs/t9004/210/1160833155/647627/ad6be059/59b4f4e1N9a2b1532.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7504/338/63721388/491286/f5957f53/598e95f1N7f2adb87.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7441/10/64242474/419246/adb30a7d/598e95fbNd989ba0a.jpg!q70.jpg
             * num : 1
             * pid : 8
             * price : 324.0
             * pscid : 1
             * selected : 0
             * sellerid : 1
             * subhead : 每个中秋都不能简单，无论身在何处，你总需要一块饼让生活更圆满，京东月饼让爱更圆满京东自营，闪电配送，更多惊喜，快用手指戳一下
             * title : 北京稻香村 稻香村中秋节月饼 老北京月饼礼盒655g
             */

            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 title;
            //自己添加的三个字段
            private int isFirst = 1;//1为显示商铺, 2为隐藏商铺
            private boolean item_check;//每个商品的选中状态
            private boolean shop_check;//商店的选中状态

            public int getIsFirst() {
                return isFirst;
            }

            public void setIsFirst(int isFirst) {
                this.isFirst = isFirst;
            }

            public boolean isItem_check() {
                return item_check;
            }

            public void setItem_check(boolean item_check) {
                this.item_check = item_check;
            }

            public boolean isShop_check() {
                return shop_check;
            }

            public void setShop_check(boolean shop_check) {
                this.shop_check = shop_check;
            }

            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 getTitle() {
                return title;
            }

            public void setTitle(String title) {
                this.title = title;
            }
        }
    }
}

---

callBack包

---

ModelCallBack

public interface ModelCallBack {
    public void success(CartBean cartBean);
    public void failure(Exception e);
}

---

ViewCallBack

public interface ViewCallBack {
    public void success(CartBean cartBean);
    public void failure(Exception e);
}

---

customview包

---

CustomJiaJian

public class CustomJiaJian extends LinearLayout {
    private Button reverse;
    private Button add;
    private EditText countEdit;
    private int mCount =1;
    public CustomJiaJian(Context context) {
        super(context);
    }

    public CustomJiaJian(Context context, AttributeSet attrs) {
        super(context, attrs);
        View view = View.inflate(context, R.layout.custom_jiajian,this);

        reverse = (Button) view.findViewById(R.id.reverse);
        add = (Button) view.findViewById(R.id.add);
        countEdit = (EditText) view.findViewById(R.id.count);

        reverse.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                String content = countEdit.getText().toString().trim();
                int count = Integer.valueOf(content);

                if(count>1){
                    mCount = count-1;
                    countEdit.setText(mCount+"");
                    //回调给adapter里面
                    if(customListener!=null){
                        customListener.jiajian(mCount);
                    }
                }
            }
        });

        add.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                String content = countEdit.getText().toString().trim();
                int count = Integer.valueOf(content)+1;
                mCount = count;

                countEdit.setText(mCount+"");

                //接口回调给adapter
                if(customListener!=null){
                    customListener.jiajian(mCount);
                }
            }
        });

    }

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

    CustomListener customListener;
    public void setCustomListener(CustomListener customListener){
        this.customListener = customListener;
    }

    //加减的接口
    public interface CustomListener{
        public void jiajian(int count);
        public void shuRuZhi(int count);
    }

    //这个方法是供recyadapter设置 数量时候调用的
    public void setEditText(int num) {
        if(countEdit !=null) {
            countEdit.setText(num + "");
        }
    }
}

---

model包

---

MyModel

public class MyModel {
    public void getData(final ModelCallBack modelCallBack){
        //访问接口
        String path = "https://www.zhaoapi.cn/product/getCarts?uid=4861";
        OkhttpUtils.getInstance().asy(null, path, new AbstractUiCallBack<CartBean>() {

            @Override
            public void success(CartBean cartBean) {
                modelCallBack.success(cartBean);
            }

            @Override
            public void fail(Exception e) {
                modelCallBack.failure(e);
            }
        });
    }
}

---

presenter包

---

MyPresenter

public class MyPresenter {

    MyModel myModel = new MyModel();
    ViewCallBack viewCallBack;
    public MyPresenter(ViewCallBack viewCallBack) {
        this.viewCallBack = viewCallBack;
    }

    //调用model 层的请求数据
    public void getData(){
        myModel.getData(new ModelCallBack() {
            @Override
            public void success(CartBean cartBean) {
                if(viewCallBack!=null) {
                    viewCallBack.success(cartBean);
                }
            }

            @Override
            public void failure(Exception e) {
                if(viewCallBack!=null) {
                    viewCallBack.failure(e);
                }
            }
        });
    }

    /**
     * 防止内存泄露
     * */
    public void detach(){
        viewCallBack=null;
    }
}

---

okhttp

---

AbstractUiCallBack

public abstract  class AbstractUiCallBack<T> implements Callback {

    public abstract void success(T t);

    public abstract void fail(Exception e);


    private Handler handler = null;
    private Class clazz;

    public AbstractUiCallBack(){
        handler = new Handler(Looper.getMainLooper());

        Type type = getClass().getGenericSuperclass();

        Type[] arr = ((ParameterizedType)type).getActualTypeArguments();

        clazz = (Class) arr[0];
    }


    @Override
    public void onFailure(Call call, IOException e) {
        fail(e);
    }

    @Override
    public void onResponse(Call call, Response response) throws IOException {

        try {

            String result = response.body().string();

            Gson gson = new Gson();

            final  T t = (T) gson.fromJson(result,clazz);

            handler.post(new Runnable() {
                @Override
                public void run() {
                    success(t);//成功的回调出去
                }
            });
        }catch (Exception e){
            e.printStackTrace();
            fail(e);//失败的回调
        }
    }
}

---

MyInterceptor

public class MyInterceptor implements Interceptor {
    @Override public Response intercept(Interceptor.Chain chain) throws IOException {
        //首先取到Request
        Request request = chain.request();
        Response response = null;
        Request requestProcess = null ;
        if("GET".equals(request.method())){
            String url =  request.url().toString() + "&source=android";
            Request.Builder builder =  request.newBuilder() ;
            builder.get().url(url);
            requestProcess =  builder.build();
            response = chain.proceed(requestProcess);
        } else {
            FormBody.Builder builder = new FormBody.Builder() ;
            RequestBody requestBody =  request.body() ;
            if(requestBody instanceof FormBody){
                FormBody formBody = (FormBody)requestBody ;
                for (int i=0;i<formBody.size();i++){
                    builder.add(formBody.encodedName(i),formBody.encodedValue(i));
                }
                builder.add("source","android");
            }
            requestProcess =  request.newBuilder().url(request.url().toString()).post(builder.build()).build() ;
            response = chain.proceed(requestProcess);
        }

        return response;
    }
}

---

OkhttpUtils

public class OkhttpUtils {

    private static OkhttpUtils okhttpUtils = null;

    private OkhttpUtils(){

    }

    public static OkHttpClient client;
    public static OkhttpUtils getInstance(){
        if(okhttpUtils==null){
            okhttpUtils = new OkhttpUtils();
            client = new OkHttpClient.Builder()
                    .readTimeout(20, TimeUnit.SECONDS)
                    .writeTimeout(20,TimeUnit.SECONDS)
                    .connectTimeout(20,TimeUnit.SECONDS)
                    //添加应用拦截器
                    .addInterceptor(new MyInterceptor())
                    .build();
        }
        return okhttpUtils;
    }

    public void asy(Map<String,String> params, String url, AbstractUiCallBack callBack){
        Request request = null;

        if(params!=null){
            FormBody.Builder builder = new FormBody.Builder();
            for(Map.Entry<String,String> entry : params.entrySet()){
                builder.add(entry.getKey(),entry.getValue());
            }

            FormBody body = builder.build();
            request = new Request.Builder()
                    .url(url)
                    .post(body)
                    .build();
        }else{
            request = new Request.Builder()
                    .url(url)
                    .build();
        }

        client.newCall(request).enqueue(callBack);
    }
}