ADD file via upload

FoodGridAdapter.java

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+package com.example.health.food_grid;
+
+import android.content.Context;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.BaseAdapter;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import com.example.health.Bean.FoodBean;
+import com.example.health.R;
+
+import java.util.List;
+
+public class FoodGridAdapter extends BaseAdapter {
+    Context context;
+
+    public FoodGridAdapter(Context context, List<FoodBean> mDates) {
+        this.context = context;
+        this.mDates = mDates;
+    }
+
+    List<FoodBean>mDates;
+    @Override
+    public int getCount() {
+        return mDates.size();
+    }
+
+    @Override
+    public Object getItem(int position) {
+        return mDates.get(position);
+    }
+
+    @Override
+    public long getItemId(int position) {
+        return position;
+    }
+
+    @Override
+    public View getView(int position, View convertView, ViewGroup parent) {
+//声明ViewHolder
+        ViewHolder holder = null;
+        if (convertView == null) {//判断是否有复用的view，如果没有就创建
+            convertView = LayoutInflater.from(context).inflate(R.layout.item_foodgrid,null);
+            holder = new ViewHolder(convertView);
+            convertView.setTag(holder);
+        }else{
+            holder = (ViewHolder) convertView.getTag();
+        }
+//获取指定位置的数据
+        FoodBean foodBean = mDates.get(position);
+        holder.iv.setImageResource(foodBean.getPicID());
+        holder.tv.setText(foodBean.getFoodName());
+        return convertView;
+    }
+    class ViewHolder{
+        ImageView iv;
+        TextView tv;
+        public ViewHolder(View view){
+            iv=view.findViewById(R.id.item_grid_iv);
+            tv=view.findViewById(R.id.item_grid_tv);
+        }
+    }
+}