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  • 购物菜单

     1 <?xml version="1.0" encoding="utf-8"?>
     2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     3     android:layout_width="match_parent"
     4     android:layout_height="match_parent"
     5     android:orientation="vertical">
     6 
     7     <TextView
     8         android:id="@+id/textView"
     9         android:layout_width="match_parent"
    10         android:layout_height="35dp"
    11         android:background="#009688"
    12         android:gravity="center"
    13         android:text="购物清单"
    14         android:textColor="#E91E63"
    15         android:textSize="25sp" />
    16 
    17     <LinearLayout
    18         android:layout_width="match_parent"
    19         android:layout_height="wrap_content"
    20         android:layout_weight="1"
    21         android:orientation="vertical">
    22 
    23         <ListView
    24             android:id="@+id/fruit_item"
    25             android:layout_width="match_parent"
    26             android:layout_height="match_parent" />
    27     </LinearLayout>
    28 </LinearLayout>
     1 package com.example.shoppinglist;
     2 
     3 import androidx.appcompat.app.AppCompatActivity;
     4 
     5 import android.app.Activity;
     6 import android.os.Bundle;
     7 import android.widget.ListView;
     8 
     9 import java.util.ArrayList;
    10 import java.util.List;
    11 
    12 public class MainActivity extends Activity {
    13     final List<Fruit> fruitList = new ArrayList<Fruit>();
    14 
    15     @Override
    16     protected void onCreate(Bundle savedInstanceState) {
    17         super.onCreate(savedInstanceState);
    18         setContentView(R.layout.activity_main);
    19         initFruits();
    20         FruitAdapte adapter = new FruitAdapte(this,R.layout.item,fruitList);
    21         ListView lv = (ListView)findViewById(R.id.fruit_item);
    22         lv.setAdapter(adapter);
    23 
    24     }
    25 
    26     public void initFruits(){
    27         Fruit annona squamosa = new Fruit("释迦果","20元1斤",R.mipmap.annona squamosa);
    28         fruitList.add(annona squamosa);
    29         Fruit apple= new Fruit("苹果","5元1斤",R.mipmap.apple);
    30         fruitList.add(apple);
    31         Fruit banana = new Fruit("香蕉","9元1斤",R.mipmap.banana);
    32         fruitList.add(banana);
    33         Fruit strawberry = new Fruit("草莓","30元1斤",R.mipmap.strawberry );
    34         fruitList.add(strawberry );
    35         Fruit orange= new Fruit("橙子","10元1斤",R.mipmap.orange);
    36         fruitList.add(orange);
    37         Fruit watermelon = new Fruit("西瓜","20元1斤",R.mipmap.watermelon);
    38         fruitList.add(watermelon);
    39         Fruit hami melon= new Fruit("哈密瓜","15元1斤",R.mipmap.hami melon);
    40         fruitList.add(hami melon);
    41 
    42     }
    43 }

    fruit

     1 package com.example.shoppinglist;
     2 
     3 public class Fruit {
     4     private int imageId;
     5     private String Name,Price;
     6     public Fruit(String Name, String Price, int imageId) {
     7         super();
     8         this.imageId = imageId;
     9         this.Name = Name;
    10         this.Price = Price;
    11     }
    12 
    13     public int getImageId() {
    14         return imageId;
    15     }
    16 
    17     public void setImageId(int imageId) {
    18         this.imageId = imageId;
    19     }
    20 
    21     public String getName() {
    22         return Name;
    23     }
    24 
    25     public void setName(String name) {
    26         Name = name;
    27     }
    28 
    29     public String getPrice() {
    30         return Price;
    31     }
    32 
    33     public void setPrice(String price) {
    34         Price = price;
    35     }
    36 
    37     public Object getItem(int position){
    38         return position;
    39     }
    40 
    41 }

    fruitadapte

     1 package com.example.shoppinglist;
     2 
     3 import android.content.Context;
     4 import android.view.LayoutInflater;
     5 import android.view.View;
     6 import android.view.ViewGroup;
     7 import android.widget.ArrayAdapter;
     8 import android.widget.ImageView;
     9 import android.widget.TextView;
    10 
    11 import java.util.List;
    12 
    13 public class FruitAdapte extends ArrayAdapter {
    14     int resourceId;
    15     public FruitAdapte(Context context, int resource, List<Fruit> objects){
    16         super(context, resource,objects);
    17         resourceId=resource;
    18     }
    19 
    20     @Override
    21     public View getView(int position, View convertView, ViewGroup parent){
    22         Fruit fruit = (Fruit)getItem(position);
    23         View view = LayoutInflater.from(getContext()).inflate(resourceId,null);
    24         ImageView iv = (ImageView)view.findViewById(R.id.imageView);
    25         TextView tv = (TextView)view.findViewById(R.id.textName);
    26         TextView pv = (TextView)view.findViewById(R.id.textPrice);
    27         iv.setImageResource(fruit.getImageId());
    28         tv.setText((CharSequence) fruit.getName());
    29         pv.setText((CharSequence)fruit.getPrice());
    30 
    31         return  view;
    32     }
    33 
    34 }

    item

     1 <?xml version="1.0" encoding="utf-8"?>
     2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     3     xmlns:app="http://schemas.android.com/apk/res-auto"
     4     android:layout_width="match_parent"
     5     android:layout_height="match_parent" >
     6 
     7     <ImageView
     8         android:id="@+id/imageView"
     9         android:layout_width="100dp"
    10         android:layout_height="100dp"
    11         app:srcCompat="@mipmap/grape" />
    12 
    13     <LinearLayout
    14         android:layout_width="match_parent"
    15         android:layout_height="100dp"
    16         android:gravity="left|center_vertical"
    17         android:orientation="vertical"
    18         android:scrollbarSize="8dp">
    19 
    20         <TextView
    21             android:id="@+id/textName"
    22             android:layout_width="wrap_content"
    23             android:layout_height="wrap_content"
    24             android:text="草莓" />
    25 
    26         <TextView
    27             android:id="@+id/textPrice"
    28             android:layout_width="wrap_content"
    29             android:layout_height="wrap_content"
    30             android:text="价格:30元1斤"
    31             android:textSize="16sp" />
    32     </LinearLayout>
    33 
    34 </LinearLayout>
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  • 原文地址:https://www.cnblogs.com/WangYYY/p/14003634.html
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