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>

 

posted @ 2020-11-19 09:45  好学生!  阅读(95)  评论(0编辑  收藏  举报