码迷,mamicode.com
首页 > 移动开发 > 详细

Android下ListView的学习

时间:2015-09-12 17:41:47      阅读:380      评论:0      收藏:0      [点我收藏+]

标签:

Android下ListView的学习

  文字加图片的ListView

1.添加图片文件

  在res下drawable-hdpi文件里添加所需的图片资源;

  例:guide1.jpg,guide2.jpg,guide3.jpg,guide4.jpg,guide5.jpg,guide6.jpg,guide7.jpg,guide8.jpg.

2.MainActivity.java文件

 1 package com.example.listview;
 2 
 3 import java.util.ArrayList;
 4 import java.util.List;
 5 
 6 import android.os.Bundle;
 7 import android.app.Activity;
 8 import android.view.Menu;
 9 import android.widget.ArrayAdapter;
10 import android.widget.ListView;
11 
12 public class MainActivity extends Activity {
13     //private String[] data = { "Apple", "Banana", "Orange", "Watermelon",
14             //"Pear", "Grape", "Pineapple", "Strawberry", "Cherry", "Mango" };
15     private List<Fruit> fruitList = new ArrayList<Fruit>();
16     @Override
17     protected void onCreate(Bundle savedInstanceState) {
18         super.onCreate(savedInstanceState);
19         setContentView(R.layout.activity_main);
20         
21         initFruits(); // 初始化水果数据
22         FruitAdapter adapter = new FruitAdapter(MainActivity.this,
23         R.layout.fruit_item, fruitList);
24         ListView listView = (ListView) findViewById(R.id.listView1);
25         listView.setAdapter(adapter);
26         
27         /*ArrayAdapter<String> adapter = new ArrayAdapter<String>(
28                 MainActivity.this, android.R.layout.simple_list_item_1, data);
29                 ListView listView = (ListView) findViewById(R.id.listView1);
30                 listView.setAdapter(adapter);*/
31     }
32     private void initFruits() {
33         Fruit apple = new Fruit("Apple", R.drawable.guide1);
34         fruitList.add(apple);
35         Fruit banana = new Fruit("Banana", R.drawable.guide2);
36         fruitList.add(banana);
37         Fruit orange = new Fruit("Orange", R.drawable.guide3);
38         fruitList.add(orange);
39         Fruit watermelon = new Fruit("Watermelon", R.drawable.guide4);
40         fruitList.add(watermelon);
41         Fruit pear = new Fruit("Pear", R.drawable.guide5);
42         fruitList.add(pear);
43         Fruit grape = new Fruit("Grape", R.drawable.guide6);
44         fruitList.add(grape);
45         Fruit pineapple = new Fruit("Pineapple", R.drawable.guide7);
46         fruitList.add(pineapple);
47         Fruit strawberry = new Fruit("Strawberry", R.drawable.guide8);
48         fruitList.add(strawberry);
49         }
50 
51 
52     @Override
53     public boolean onCreateOptionsMenu(Menu menu) {
54         // Inflate the menu; this adds items to the action bar if it is present.
55         getMenuInflater().inflate(R.menu.main, menu);
56         return true;
57     }
58     
59 }

3.Fruit.java文件

 1 package com.example.listview;
 2 
 3 import java.util.ArrayList;
 4 import java.util.List;
 5 
 6 import android.os.Bundle;
 7 import android.app.Activity;
 8 import android.view.Menu;
 9 import android.widget.ArrayAdapter;
10 import android.widget.ListView;
11 
12 public class MainActivity extends Activity {
13     //private String[] data = { "Apple", "Banana", "Orange", "Watermelon",
14             //"Pear", "Grape", "Pineapple", "Strawberry", "Cherry", "Mango" };
15     private List<Fruit> fruitList = new ArrayList<Fruit>();
16     @Override
17     protected void onCreate(Bundle savedInstanceState) {
18         super.onCreate(savedInstanceState);
19         setContentView(R.layout.activity_main);
20         
21         initFruits(); // 初始化水果数据
22         FruitAdapter adapter = new FruitAdapter(MainActivity.this,
23         R.layout.fruit_item, fruitList);
24         ListView listView = (ListView) findViewById(R.id.listView1);
25         listView.setAdapter(adapter);
26         
27         /*ArrayAdapter<String> adapter = new ArrayAdapter<String>(
28                 MainActivity.this, android.R.layout.simple_list_item_1, data);
29                 ListView listView = (ListView) findViewById(R.id.listView1);
30                 listView.setAdapter(adapter);*/
31     }
32     private void initFruits() {
33         Fruit apple = new Fruit("Apple", R.drawable.guide1);
34         fruitList.add(apple);
35         Fruit banana = new Fruit("Banana", R.drawable.guide2);
36         fruitList.add(banana);
37         Fruit orange = new Fruit("Orange", R.drawable.guide3);
38         fruitList.add(orange);
39         Fruit watermelon = new Fruit("Watermelon", R.drawable.guide4);
40         fruitList.add(watermelon);
41         Fruit pear = new Fruit("Pear", R.drawable.guide5);
42         fruitList.add(pear);
43         Fruit grape = new Fruit("Grape", R.drawable.guide6);
44         fruitList.add(grape);
45         Fruit pineapple = new Fruit("Pineapple", R.drawable.guide7);
46         fruitList.add(pineapple);
47         Fruit strawberry = new Fruit("Strawberry", R.drawable.guide8);
48         fruitList.add(strawberry);
49         }
50 
51 
52     @Override
53     public boolean onCreateOptionsMenu(Menu menu) {
54         // Inflate the menu; this adds items to the action bar if it is present.
55         getMenuInflater().inflate(R.menu.main, menu);
56         return true;
57     }
58     
59 }

4.FruitAdapter.java文件

 1 package com.example.listview;
 2 
 3 import java.util.List;
 4 
 5 import android.content.Context;
 6 import android.view.LayoutInflater;
 7 import android.view.View;
 8 import android.view.ViewGroup;
 9 import android.widget.ArrayAdapter;
10 import android.widget.ImageView;
11 import android.widget.TextView;
12 
13 public class FruitAdapter extends ArrayAdapter<Fruit> {
14     private int resourceId;
15 
16     public FruitAdapter(Context context, int textViewResourceId,List<Fruit> objects) {
17         super(context, textViewResourceId,objects);
18         resourceId = textViewResourceId;
19         // TODO 自动生成的构造函数存根
20     }
21     public View getView(int position, View convertView, ViewGroup parent) {
22         Fruit fruit = getItem(position); // 获取当前项的Fruit实例
23         View view = LayoutInflater.from(getContext()).inflate(resourceId, null);
24         ImageView fruitImage = (ImageView) view.findViewById(R.id.fruit_image);
25         TextView fruitName = (TextView) view.findViewById(R.id.fruit_name);
26         fruitImage.setImageResource(fruit.GetimageId());
27         fruitName.setText(fruit.GetName());
28         return view;
29         }
30 
31 }

5.AndroidManifest.xml

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
 3     package="com.example.listview"
 4     android:versionCode="1"
 5     android:versionName="1.0" >
 6 
 7     <uses-sdk
 8         android:minSdkVersion="8"
 9         android:targetSdkVersion="18" />
10 
11     <application
12         android:allowBackup="true"
13         android:icon="@drawable/ic_launcher"
14         android:label="@string/app_name"
15         android:theme="@style/AppTheme" >
16         <activity
17             android:name="com.example.listview.MainActivity"
18             android:label="@string/app_name" >
19             <intent-filter>
20                 <action android:name="android.intent.action.MAIN" />
21 
22                 <category android:name="android.intent.category.LAUNCHER" />
23             </intent-filter>
24         </activity>
25     </application>
26 
27 </manifest>

6.activity_main.xml

 1 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 2     xmlns:tools="http://schemas.android.com/tools"
 3     android:layout_width="match_parent"
 4     android:layout_height="match_parent"
 5     android:orientation="vertical"
 6     tools:context=".MainActivity" >
 7 
 8     <ListView
 9         android:id="@+id/listView1"
10         android:layout_width="match_parent"
11         android:layout_height="wrap_content" >
12     </ListView>
13     
14 </LinearLayout>

7.fruit_item.xml

 1 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 2     android:layout_width="match_parent"
 3     android:layout_height="match_parent" >
 4         <ImageView
 5         android:id="@+id/fruit_image"
 6         android:layout_width="wrap_content"
 7         android:layout_height="wrap_content" />
 8         <TextView
 9         android:id="@+id/fruit_name"
10         android:layout_width="wrap_content"
11         android:layout_height="wrap_content"
12         android:layout_gravity="center"
13         android:layout_marginLeft="10dip" />
14     
15 </LinearLayout>

8.结果预览图

技术分享

 

Android下ListView的学习

标签:

原文地址:http://www.cnblogs.com/chance88/p/4803193.html

(0)
(0)
   
举报
评论 一句话评论(0
登录后才能评论!
© 2014 mamicode.com 版权所有  联系我们:gaon5@hotmail.com
迷上了代码!