修改适配器

CatApp_android_End/src/main/java/com/example/cat/controller/CatShoppingCartController.java

@@ -97,4 +97,45 @@ public class CatShoppingCartController {
         }
     }
 
+    @RequestMapping(value = "/deleteShop", method = RequestMethod.POST)
+    public Map<String, Object> deleteShoppingCart(@RequestBody String id) {
+        Integer deleteFlag = shoppingCartService.deleteShoppingCart(Integer.valueOf(id));
+        Map<String, Object> map = new HashMap<>();
+        if (deleteFlag <= 0) {
+            map.put("flag", false);
+            map.put("msg", "delete error");
+            return map;
+        }
+        map.put("flag", true);
+        map.put("msg", "delete success");
+        return map;
+    }
+
+    @RequestMapping(value = "/updateShop", method = RequestMethod.POST)
+    public Map<String, Object> updateShoppingCart(@RequestBody String num,@RequestBody String id) {
+        Integer updateFlag = shoppingCartService.updateShoppingCart(Integer.valueOf(num),Integer.valueOf(id));
+        Map<String, Object> map = new HashMap<>();
+        if (updateFlag <= 0) {
+            map.put("flag", false);
+            map.put("msg", "search error");
+            return map;
+        }
+        map.put("flag", true);
+        map.put("msg", "update success");
+        return map;
+    }
+    @RequestMapping(value = "/addShop", method = RequestMethod.POST)
+    public Map<String, Object> addProduct(@RequestBody String userId,@RequestBody String productId,@RequestBody String num) {
+        Integer addFlag = shoppingCartService.addShoppingCart(Integer.valueOf(userId),Integer.valueOf(productId),Integer.valueOf(num));
+        Map<String, Object> map = new HashMap<>();
+        if (addFlag <= 0) {
+            map.put("flag", false);
+            map.put("msg", "add error");
+            return map;
+        }
+        map.put("flag", true);
+        map.put("msg", "add success");
+        return map;
+    }
+
 }

CatApp_android_End/src/main/java/com/example/cat/mapper/ShoppingCartMapper.java

@@ -28,5 +28,11 @@ public interface ShoppingCartMapper {
      */
     List<CatShoppingCart> selectShoppingCart(@Param("userId") Integer userId);
 
+    Integer updateShoppingCart(@Param("num") Integer num,@Param("id")Integer id);
+
+    Integer deleteShoppingCart(@Param("id")Integer id);
+
+    Integer addShoppingCart(@Param("userId")Integer userId,@Param("productId")Integer productId,@Param("num")Integer num);
+
 
 }

CatApp_android_End/src/main/java/com/example/cat/service/ShoppingCartService.java

@@ -3,6 +3,7 @@ package com.example.cat.service;
 import com.example.cat.entity.CatProduct;
 import com.example.cat.entity.CatShoppingCart;
 import com.example.cat.mapper.ShoppingCartMapper;
+import org.apache.ibatis.annotations.Param;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
@@ -35,5 +36,17 @@ public class ShoppingCartService {
     public List<CatShoppingCart> selectShoppingCart(Integer userId) {
         return shoppingCartMapper.selectShoppingCart(userId);
     }
+    public Integer updateShoppingCart(Integer num, Integer id) {
+        return shoppingCartMapper.updateShoppingCart(num,id);
+    }
+
+    public Integer deleteShoppingCart(Integer id) {
+        return shoppingCartMapper.deleteShoppingCart(id);
+    }
+
+    public Integer addShoppingCart(Integer userId,Integer productId,Integer num) {
+        return shoppingCartMapper.addShoppingCart(userId,productId,num);
+    }
+
 
 }

CatApp_android_End/src/main/resources/mapper/ShoppingCartMapper.xml

@@ -8,5 +8,23 @@
     <select id="selectShoppingCart" resultType="com.example.cat.entity.CatShoppingCart">
         select id,user_id,product_id,num from orange_shoppingcart where user_id=#{userId}
     </select>
-
+    <update id="updateShoppingCart">
+        update orange_shoppingcart set
+        <trim suffixOverrides=",">
+            num=#{num},
+        </trim>
+        where id=#{id}
+    </update>
+    <delete id="deleteShoppingCart">
+        delete from orange_shoppingcart where id=#{id} and num=0;
+    </delete>
+    <delete id="deleteShop">
+        delete from orange_shoppingcart where id=#{id} ;
+    </delete>
+    <insert id="addShoppingCart" parameterType="com.example.cat.entity.CatShoppingCart">
+        insert into orange_shoppingcart(user_id,product_id,num) values (#{user_id},#{product_id},#{num})
+    </insert>
+    <insert id="addShop" parameterType="com.example.cat.entity.CatShoppingCart">
+        insert into orange_shoppingcart(user_id,product_id,num) values (#{user_id},#{product_id},#{num})
+    </insert>
 </mapper>

CatApp_android_frontEnd/app/build.gradle

@@ -33,4 +33,5 @@ dependencies {
     implementation 'liji.library.dev:citypickerview:1.1.0'
     implementation "com.squareup.okhttp3:okhttp:4.2.2"
     implementation group: 'com.alibaba', name: 'fastjson', version: '1.2.12'
+    implementation 'androidx.recyclerview:recyclerview:1.1.0'
 }

CatApp_android_frontEnd/app/src/main/java/com/example/catapp/adapter/ShopAdapter.java

@@ -0,0 +1,106 @@
+package com.example.catapp.adapter;
+
+import android.app.FragmentTransaction;
+import android.content.Context;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.example.catapp.R;
+import com.example.catapp.entity.CatProductPack;
+import com.example.catapp.entity.ShoppingCartPack;
+import com.example.catapp.fragment.ProductFragment;
+
+import java.util.List;
+
+public class ShopAdapter extends RecyclerView.Adapter<ShopAdapter.ViewHolder> {
+    private List<ShoppingCartPack> shoppingCartList;
+
+    private List<CatProductPack> catProductList;
+    Context context;
+
+    static class ViewHolder extends RecyclerView.ViewHolder{
+        ImageView productImage,leftImage,rightImage;
+        TextView productName, productPrice,num;
+
+        public ViewHolder(View view){
+            super(view);
+            productImage=(ImageView) view.findViewById(R.id.category_product_image);
+            productName=(TextView) view.findViewById(R.id.category_product_name);
+            productPrice=(TextView) view.findViewById(R.id.category_product_price);
+            num=(TextView) view.findViewById(R.id.num);
+            leftImage=(ImageView) view.findViewById(R.id.left);
+            rightImage=(ImageView) view.findViewById(R.id.right);
+
+        }
+    }
+    public ShopAdapter(Context context,List<CatProductPack> catProductList, List<ShoppingCartPack> shoppingCartList){
+        this.catProductList = catProductList;
+        this.shoppingCartList=shoppingCartList;
+        this.context=context;
+    }
+    @NonNull
+    @Override
+    public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        View view= View.inflate(context,R.layout.item,null);
+        final ViewHolder holder=new ViewHolder(view);
+        holder.leftImage.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                int position=holder.getAdapterPosition();
+                ShoppingCartPack shoppingCartPack=shoppingCartList.get(position);
+               Toast.makeText(view.getContext(), "click-"+shoppingCartPack.getNum(), Toast.LENGTH_SHORT).show();
+            }
+        });
+        holder.rightImage.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                int position=holder.getAdapterPosition();
+                ShoppingCartPack shoppingCartPack=shoppingCartList.get(position);
+                 Toast.makeText(view.getContext(), "click+"+shoppingCartPack.getNum(), Toast.LENGTH_SHORT).show();
+
+            }
+        });
+        return holder;
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
+        int i;
+        i=position;
+        ShoppingCartPack shoppingCartPack=shoppingCartList.get(i);
+        CatProductPack catProductPack=catProductList.get(i);
+        if(catProductPack!=null) {
+            holder.productImage.setImageBitmap(catProductPack.getImgBitmap());
+            holder.productName.setText(catProductPack.getName());
+            Log.d("hodler",""+catProductPack.getName());
+            holder.productPrice.setText(String.format("%s元", String.valueOf(catProductPack.getPrice())));
+        }
+        if(shoppingCartPack!=null)
+            holder.num.setText(""+shoppingCartPack.getNum());
+    }
+
+    @Override
+    public int getItemCount() {
+        return shoppingCartList.size();
+    }
+//    public interface OnItemClickListener {
+//
+//        public void OnItemClick(View view, ShoppingCartPack data );
+//    }
+//
+//    //需要外部访问，所以需要设置set方法，方便调用
+//    private OnItemClickListener onItemClickListener;
+//
+//    public void setOnItemClickListener(OnItemClickListener onItemClickListener) {
+//        this.onItemClickListener = onItemClickListener;
+//    }
+
+}

CatApp_android_frontEnd/app/src/main/java/com/example/catapp/adapter/ShoppingCartAdapter.java

@@ -35,7 +35,6 @@ public class ShoppingCartAdapter extends BaseAdapter {
         return catProductList.get(position);
     }
 
-
     public long getItemId(int position) {
         return position;
     }

CatApp_android_frontEnd/app/src/main/java/com/example/catapp/fragment/ShoppingCartFragment.java

@@ -17,10 +17,13 @@ import android.widget.TextView;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
 
 import com.example.catapp.R;
 import com.example.catapp.activity.IndexActivity;
 import com.example.catapp.adapter.ProductAdapter;
+import com.example.catapp.adapter.ShopAdapter;
 import com.example.catapp.adapter.ShoppingCartAdapter;
 import com.example.catapp.entity.CatProductPack;
 import com.example.catapp.entity.ShoppingCart;
@@ -38,11 +41,11 @@ public class ShoppingCartFragment extends Fragment implements View.OnClickListen
     private ProductFragment productFragment;
     private GridView productGridView;
     private TextView usernameText;
-    Button left1;
+    private RecyclerView recyclerView;
     private Integer userId=13;
    private List<CatProductPack> catProductList= new ArrayList<>();
     Handler h=null;
-
+    ShopAdapter shopAdapter;
     @Override
     public void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -52,22 +55,11 @@ public class ShoppingCartFragment extends Fragment implements View.OnClickListen
 
     }
 
-//    @Override
+    @Override
-//    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
+    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
-//        super.onActivityCreated(savedInstanceState);
+        super.onActivityCreated(savedInstanceState);
-//        productGridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
+        //LinearLayoutManager linearLayoutManager=new LinearLayoutManager(this);
-//            @Override
+    }
-//            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
-//                FragmentTransaction transaction = getFragmentManager().beginTransaction();
-//                if (productFragment == null) {
-//                    productFragment = new ProductFragment();
-//                }
-//                transaction.replace(R.id.main_content0, productFragment);
-//                transaction.commit();
-//
-//            }
-//        });
-//    }
 
     @Nullable
     @Override
@@ -77,6 +69,7 @@ public class ShoppingCartFragment extends Fragment implements View.OnClickListen
         if (cartList.size() > 0) {
             //有商品
             view = LayoutInflater.from(getActivity()).inflate(R.layout.cart_have_product, container, false);
+
             linkHttp(view);
         } else {
             view = LayoutInflater.from(getActivity()).inflate(R.layout.cart_no_product, container, false);
@@ -136,8 +129,11 @@ public class ShoppingCartFragment extends Fragment implements View.OnClickListen
             @Override
             public void handleMessage(@NonNull Message msg) {
                 super.handleMessage(msg);
-                ShoppingCartAdapter shoppingCartAdapter = new ShoppingCartAdapter(getActivity(), catProductList,cartList);
+                recyclerView.setLayoutManager(new LinearLayoutManager(getActivity(),LinearLayoutManager.VERTICAL,false));
-                productGridView.setAdapter(shoppingCartAdapter);
+                 shopAdapter=new ShopAdapter(getActivity(),catProductList,cartList);
+                recyclerView.setAdapter(shopAdapter);
+                //ShoppingCartAdapter shoppingCartAdapter = new ShoppingCartAdapter(getActivity(), catProductList,cartList);
+                //productGridView.setAdapter(shoppingCartAdapter);
             }
 
         };
@@ -146,7 +142,8 @@ public class ShoppingCartFragment extends Fragment implements View.OnClickListen
             public void run() {
                 OkHttpShoppingcart okHttpShoppingcart=new OkHttpShoppingcart();
                 try {
-                    productGridView = view.findViewById(R.id.cart_productList);
+                    recyclerView=view.findViewById(R.id.recyclerview);
+                    //productGridView = view.findViewById(R.id.cart_productList);
                     catProductList= okHttpShoppingcart.getProductPack(userId);
                     cartList=okHttpShoppingcart.getShoppingCartPack(userId);
                 } catch (IOException e) {

CatApp_android_frontEnd/app/src/main/res/layout/cart_have_product.xml

@@ -1,15 +1,14 @@
 <?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="vertical">
 
     <include layout="@layout/shoppingcart_title" />
     <!--有商品时的布局-->
-    <GridView
+    <include layout="@layout/shop" />
-        android:id="@+id/cart_productList"
+
-        android:layout_width="match_parent"
+
-        android:layout_height="wrap_content"
-        android:numColumns="1" />
 
 </LinearLayout>

CatApp_android_frontEnd/app/src/main/res/layout/item.xml

@@ -0,0 +1,70 @@
+<?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"
+    android:background="#14FFEB3B"
+    android:orientation="vertical"
+    >
+
+    <ImageView
+        android:id="@+id/category_product_image"
+        android:layout_width="80dp"
+        android:layout_height="80dp"
+        android:layout_gravity="center"
+        android:layout_marginTop="5dp" />
+
+    <TextView
+        android:id="@+id/category_product_name"
+        android:layout_width="wrap_content"
+        android:layout_height="30dp"
+        android:layout_toRightOf="@+id/category_product_image"
+        android:layout_gravity="center"
+        android:layout_marginLeft="10dp"
+        android:layout_marginTop="25dp"
+        android:textColor="#050505"
+        android:textSize="16sp" />
+
+    <TextView
+        android:id="@+id/category_product_price"
+        android:layout_width="wrap_content"
+        android:layout_height="30dp"
+        android:layout_toRightOf="@+id/category_product_name"
+        android:layout_gravity="center"
+        android:layout_marginLeft="60dp"
+        android:layout_marginTop="25dp"
+        android:gravity="center"
+        android:textColor="#050505"
+        android:textSize="16sp" />
+    <ImageView
+        android:id="@+id/left"
+        android:layout_width="36dp"
+        android:layout_height="36dp"
+        android:layout_marginLeft="40dp"
+        android:layout_marginTop="55dp"
+        android:layout_toRightOf="@id/category_product_price"
+        android:background="@drawable/left"
+
+        />
+    <TextView
+        android:id="@+id/num"
+        android:layout_width="wrap_content"
+        android:layout_height="40dp"
+        android:layout_toRightOf="@+id/left"
+        android:layout_marginLeft="20dp"
+        android:layout_marginTop="50dp"
+        android:gravity="center"
+        android:background="#00FEFEFE"
+        android:textColor="#050505"
+        android:textSize="16sp" />
+    <ImageView
+        android:id="@+id/right"
+        android:layout_width="48dp"
+        android:layout_height="48dp"
+        android:layout_gravity="center"
+        android:layout_marginLeft="20dp"
+        android:layout_marginTop="50dp"
+        android:layout_toRightOf="@id/num"
+        android:background="@drawable/right"
+        />
+
+</RelativeLayout>

CatApp_android_frontEnd/app/src/main/res/layout/shop.xml

@@ -0,0 +1,12 @@
+<?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">
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/recyclerview"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+         />
+</LinearLayout>