在main.xml中：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center_horizontal"
android:background="#000000">
<TextView
android:id="@+id/mainInfo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#ffffff"
android:text="手机联系人列表"/>
<ListView
android:id="@+id/contactList"
android:background="#0066ff"
android:layout_width="fill_parent"
android:layout_height="fill_parent"/>
</LinearLayout>
新建布局文件contacts.xml：
<?xml version="1.0" encoding="utf-8"?>
<TableLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#0066ff">
<TableRow >
<TextView
android:id="@+id/_id"
android:gravity="center_vertical"
android:layout_width="wrap_content"
android:layout_height="30dp"
android:layout_marginLeft="16dp"
android:textColor="#ffffff"/>
<TextView
android:id="@+id/name"
android:gravity="center_vertical"
android:textColor="#ffffff"
android:layout_width="wrap_content"
android:layout_height="30dp"
android:layout_marginLeft="8dp"/>
</TableRow>
</TableLayout>
在主Activity(ContentsDemo.java)中：
package com.li.contactsproject;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.database.Cursor;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Adapter;
import android.widget.AdapterView;
import android.widget.AdapterView.AdapterContextMenuInfo;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.Toast;
import android.support.v4.app.NavUtils;
@SuppressLint("ParserError")
public class ContentsDemo extends Activity {
private Cursor result = null; //查询返回的结果
private ListView contactsList = null; //定义ListView组件
private List<Map<String,Object>> allContacts = null;
private SimpleAdapter simple = null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
super.setContentView(R.layout.main);
this.contactsList = (ListView)super.findViewById(R.id.contactList);
this.result = super.getContentResolver().query(ContactsContract
.Contacts.CONTENT_URI, null, null, null, null); //查询
super.startManagingCursor(this.result); //将结果集交给容器管理
this.allContacts = new ArrayList<Map<String,Object>>(); //实例化List集合
for(this.result.moveToFirst();!this.result.isAfterLast();
this.result.moveToNext()){ //取出结果集中的每一个内容
Map<String,Object> contact = new HashMap<String, Object>();
contact.put("_id",this.result.getInt(this.result
.getColumnIndex(ContactsContract.Contacts._ID)));
contact.put("name",this.result.getString(this.result
.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME)));
this.allContacts.add(contact);
this.simple = new SimpleAdapter(this,this.allContacts,
R.layout.contacts,new String[]{"_id","name"},new int[]{
R.id._id,R.id.name});
this.contactsList.setAdapter(this.simple);
super.registerForContextMenu(this.contactsList); //注册上下文菜单
}
}
@Override
public boolean onContextItemSelected(MenuItem item) {
AdapterView.AdapterContextMenuInfo info =
(AdapterContextMenuInfo) item.getMenuInfo();
int position = info.position; //取得操作位置
String contactsId = this.allContacts.get(position).get("_id").toString();
switch(item.getItemId()){ //进行菜单的操作
case Menu.FIRST + 1: //查看
String phoneSelection = ContactsContract.CommonDataKinds
.Phone.CONTACT_ID + "=?";
String[] phoneSelectionArgs = new String[]{contactsId};
Cursor c = super.getContentResolver().query(
ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
null, phoneSelection, phoneSelectionArgs, null);
StringBuffer buf = new StringBuffer();
buf.append("电话号码是：");
for(c.moveToFirst();!c.isAfterLast();c.moveToNext()){
buf.append(c.getString(c.getColumnIndex(ContactsContract
.CommonDataKinds.Phone.NUMBER))).append("、");
}
Toast.makeText(this,buf,Toast.LENGTH_SHORT).show();
break;
case Menu.FIRST + 2: //删除
super.getContentResolver().delete(Uri.withAppendedPath(
ContactsContract.Contacts.CONTENT_URI, contactsId), null,null);
this.allContacts.remove(position); //删除集合数据项
this.simple.notifyDataSetChanged(); //通知改变
Toast.makeText(this, "数据已成功删除！", Toast.LENGTH_SHORT).show();
break;
}
return super.onContextItemSelected(item);
}
@Override
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenuInfo menuInfo) { //创建菜单
super.onCreateContextMenu(menu, v, menuInfo);
menu.setHeaderTitle("联系人操作");
menu.add(Menu.NONE,Menu.FIRST + 1,1,"详细信息");
menu.add(menu.NONE,menu.FIRST + 2,1,"删除");
}
}
在AndroidManifest.xml中修改权限：
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.li.contactsproject"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="15" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".ContentsDemo"
android:label="@string/title_activity_contents_demo" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
<uses-permission android:name="android.permission.READ_CONTACTS"/>
<uses-permission android:name="android.permission.WRITE_CONTACTS"/>
</manifest>