购物商场

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

    <TextView
        android:id="@+id/textView"
        android:layout_width="match_parent"
        android:layout_height="40dp"
        android:textSize="20sp"
        android:gravity="center"
        android:textColor="#FFFFFF"
        android:text="购物商城"
        android:background="#FFA500"/>
    <ListView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/lv"
    />
</LinearLayout>

　　

 

 

<?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:padding="16dp">

    <ImageView
        android:id="@+id/iv"
        android:layout_width="100dp"
        android:layout_height="75dp"
        android:layout_centerVertical="true"
        />
    <RelativeLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="10dp"
        android:layout_toRightOf="@id/iv"
        android:layout_centerVertical="true"
        >
        <TextView
            android:id="@+id/title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="苹果"
            android:textSize="20sp"/>

        <TextView
            android:id="@+id/cn_price"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="价格"
            android:textColor="#FFA500"
            android:textSize="20sp"
            android:layout_below="@id/title"
            android:layout_marginTop="10dp"/>

        <TextView
            android:id="@+id/price"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="10元/千克"
            android:layout_toRightOf="@id/cn_price"
            android:layout_below="@id/title"
            android:textSize="20sp"
            android:textColor="#FFA500"
            android:layout_marginTop="10dp"/>

    </RelativeLayout>

　　

 

 

package com.example.malllabel;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.BaseAdapter;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {
    private ListView mListView;
    private String[] titles={"香蕉","哈密瓜","猕猴挑","西瓜"};
    private String[] prices={"15元/kg","30元/kg","35元/kg","10元/kg"};
    private int[] icons={R.drawable.banana,R.drawable.hm,R.drawable.kiwifruit,R.drawable.watermelon};

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.mall);
        mListView =(ListView)findViewById(R.id.lv);
        MyBaseAdapter adapter =new MyBaseAdapter();
        mListView.setAdapter(adapter);
    }
    class MyBaseAdapter extends BaseAdapter{
        @Override
        public int getCount(){
            return titles.length;
        }
        @Override
        public Object getItem(int position){
            return titles[position];
        }
        @Override
        public long getItemId(int position){
            return position;
        }

         @Override
         public View getView(int position, View convertView, ViewGroup parent) {
                         ViewHolder holder;
                         if(convertView==null){
                                 convertView= View.inflate(MainActivity.this,R.layout.listview,null);
                                 holder =new ViewHolder();
                                 holder.title = convertView.findViewById(R.id.title);
                                 holder.price = convertView.findViewById(R.id.price);
                                 holder.iv= convertView.findViewById(R.id.iv);
                                 convertView.setTag(holder);
                             }else {
                                 holder=(ViewHolder) convertView.getTag();
                             }
                         holder.title.setText(titles[position]);
                         holder.price.setText(prices[position]);
                         holder.iv.setImageResource(icons[position]);
                         return convertView;
                     }
     }
     class ViewHolder{
         TextView title;
         TextView price;
         ImageView iv;
     }
 }