ListView

代码：

ListViewActivity：

 1 package com.vanceinfo.ListView;
 2 
 3 import android.app.Activity;
 4 import android.database.Cursor;
 5 import android.graphics.Color;
 6 import android.os.Bundle;
 7 import android.provider.ContactsContract;
 8 import android.provider.ContactsContract.PhoneLookup;
 9 import android.view.View;
10 import android.widget.AdapterView;
11 import android.widget.LinearLayout;
12 import android.widget.ListAdapter;
13 import android.widget.ListView;
14 import android.widget.SimpleCursorAdapter;
15 import android.widget.Toast;
16 
17 public class ListViewActivity extends Activity
18 {
19     LinearLayout mLinearLayout;
20 
21     ListView mListView;
22 
23     @Override
24     public void onCreate(Bundle savedInstanceState)
25     {
26         super.onCreate(savedInstanceState);
27         // setContentView(R.layout.main);
28 // 创建linearLayout布局对象
29         mLinearLayout = new LinearLayout(this);
30         // 设置布局LinearLayout的属性
31         mLinearLayout.setOrientation(LinearLayout.VERTICAL);
32         mLinearLayout.setBackgroundColor(android.graphics.Color.BLACK);
33         // 创建ListView对象
34         mListView = new ListView(this);
35         LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT,
36                 LinearLayout.LayoutParams.WRAP_CONTENT);
37         mListView.setBackgroundColor(Color.BLACK);
38         // 添加mListView到mLinearLayout布局
39         mLinearLayout.addView(mListView, params);
40         // 设置显示mLinearLayout
41         setContentView(mLinearLayout);
42         // 获取数据库Phones的Cursor
43         Cursor cursor = getContentResolver().query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
44         startManagingCursor(cursor);
45         // ListAdapter是ListView和后台数据的桥梁
46         ListAdapter adapter = new SimpleCursorAdapter(this,
47         // 定义List中每一行的显示模板
48 // 表示每一行包含两个数据项
49                 android.R.layout.simple_list_item_2,
50                 // 数据库的Cursor对象
51                 cursor,
52                 // 从数据库的NAME和NUMBER两个列中取数据
53                 new String[] {PhoneLookup.DISPLAY_NAME},
54                 // 与NAME和NUMBER对应的Views
55                 new int[] {android.R.id.text1});
56         // 将adpter添加到mListView中
57         mListView.setAdapter(adapter);
58         // 为mListView视图添加setOnItemSelectedListener监听
59         mListView.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener()
60         {
61 
62             @Override
63             public void onItemSelected(AdapterView<?> parent, View view, int position, long id)
64             {
65                 DisplayToast("滚动到第" + Long.toString(parent.getSelectedItemId()) + "项");
66             }
67 
68             @Override
69             public void onNothingSelected(AdapterView<?> parent)
70             {
71                 // 没有选中
72             }
73         });
74         // 为mListView视图添加setOnItemClickListener监听
75         mListView.setOnItemClickListener(new AdapterView.OnItemClickListener()
76         {
77 
78             @Override
79             public void onItemClick(AdapterView<?> parent, View view, int position, long id)
80             {
81                 DisplayToast("选中了第" + Integer.toString(position + 1) + "项");
82             }
83         });
84     }
85 
86     // 显示Toast
87     public void DisplayToast(String string)
88     {
89         Toast.makeText(this, string, Toast.LENGTH_SHORT).show();
90     }
91 }

在AndroidManifest.xml中添加权限：

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
 3       package="com.vanceinfo.ListView"
 4       android:versionCode="1"
 5       android:versionName="1.0">
 6     <uses-sdk android:minSdkVersion="8" />
 7 
 8     <application android:icon="@drawable/icon" android:label="@string/app_name">
 9         <activity android:name="ListViewActivity"
10                   android:label="@string/app_name">
11             <intent-filter>
12                 <action android:name="android.intent.action.MAIN" />
13                 <category android:name="android.intent.category.LAUNCHER" />
14             </intent-filter>
15         </activity>
16 </application>
17 <!--获得了电话本数据，需要在AndroidManifest.xml中加上权限 -->
18 <uses-permission android:name="android.permission.READ_CONTACTS"/>
19 </manifest>

ListView

代码：

ListViewActivity：

在AndroidManifest.xml中添加权限：

效果图