ADD file via upload

Right_adapter.java

@@ -0,0 +1,106 @@
+package com.example.drink_order_system;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Button;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.squareup.picasso.Picasso;
+
+import java.util.ArrayList;
+
+public class Right_adapter extends RecyclerView.Adapter{
+
+    private final ArrayList<Drinks> mList;
+    private final LayoutInflater mLayoutInflater;
+    private MyClickListener mListener;
+    Right_adapter(LayoutInflater layoutInflater, ArrayList<Drinks> list) {
+        this.mList = list;
+        mLayoutInflater = layoutInflater;
+        System.out.println("rightAdapter used");
+    }
+
+    public void buttonSetOnClick(MyClickListener mListener)
+    {
+        this.mListener=mListener;
+    }
+
+    public interface MyClickListener{
+        public void onclick(View v, int position);
+    }
+
+    private Drinks getItem(int position) {
+        return mList.get(position);
+    }
+
+    @Override
+    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
+        //绑定xml组件
+        return new RightViewHolder(
+                mLayoutInflater.inflate(R.layout.list_item, parent, false));
+    }
+
+    @Override
+    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
+        Drinks target = getItem(position);
+        if (holder instanceof RightViewHolder) {
+            ((RightViewHolder) holder).bindBean(target);
+            ((RightViewHolder) holder).chooseBt.setOnClickListener(new View.OnClickListener() {
+                @Override
+                public void onClick(View v) {
+                    if(mListener!=null)
+                    {
+                        mListener.onclick(v, holder.getAdapterPosition());
+                    }
+                }
+            });
+        } else {
+            throw new IllegalStateException("Illegal state Exception onBindviewHolder");
+        }
+    }
+
+    @Override
+    public int getItemCount() {
+        return mList.size();
+    }
+
+    private class RightViewHolder extends RecyclerView.ViewHolder {
+        private final TextView drinkType;
+        private final TextView drinkName;
+        private final TextView drinkIntro;
+        private final TextView drinkPrice;
+        private Button chooseBt;
+        private final ImageView drinkImg;
+
+        RightViewHolder(View itemView) {
+            super(itemView);
+            drinkType = (TextView) itemView.findViewById(R.id.Text_drinkType);
+            drinkName = (TextView) itemView.findViewById(R.id.Text_drinkName);
+            drinkIntro = (TextView) itemView.findViewById(R.id.Text_drinkIntro);
+            drinkPrice = (TextView) itemView.findViewById(R.id.Text_drinkPrice);
+            drinkImg = (ImageView) itemView.findViewById(R.id.img_drink);
+            chooseBt = (Button) itemView.findViewById(R.id.BT_choose);
+        }
+
+        void bindBean(final Drinks bean) {
+            drinkName.setText(bean.get_name()+"  #"+(bean.get_number()+1));
+            if(bean.get_type()!=null)
+            {
+                drinkType.setText(bean.get_type());
+            }
+            else
+            {
+                drinkType.setText(null);
+            }
+            //drinkImg.setImageResource(bean.getImageResId());
+            Picasso.get().load(bean.get_imagePath()).into(drinkImg);
+            drinkPrice.setText(String.format("￥ %.0f", bean.get_price()));
+            drinkIntro.setText(bean.get_introduction());
+        }
+    }
+
+}