Android读取联系人姓名、电话

一、《Android应用开发揭秘》代码的问题
在该书上，
int nameIndex  = cursor.getColumnIndex(PhoneLookup.DISPLAY_NAME);
String contact = cursor.getString(nameIndex);
两句是可以读到联系人的名字的，而 //取得电话号码
            int numberFieldColumnIndex = cursor.getColumnIndex(PhoneLookup.NUMBER);   
            String number = cursor.getString(numberFieldColumnIndex);
会发生错误，因为2.0后，读取电话号码的API发生了改变
二、代码

   1: /***********************************/

   2: /*

   3:  *联系人的名字、电话号码的读取与显示

   4: */

   5: /***********************************/

   6: package com.Joe.Android.Examples_03_02;

   7:  

   8: import android.app.Activity;

   9: import android.content.ContentResolver;

  10: import android.database.Cursor;

  11: import android.os.Bundle;

  12: import android.provider.ContactsContract;

  13: import android.provider.ContactsContract.PhoneLookup;

  14: import android.widget.TextView;

  15:  

  16: public class mainActivity extends Activity {

  17:     /** Called when the activity is first created. */

  18:     @Override

  19:     public void onCreate(Bundle savedInstanceState) {

  20:         TextView tv = new TextView(this);

  21:         String string = "";

  22:         super.onCreate(savedInstanceState);

  23:         //得到contentresolver对象

  24:         ContentResolver cr = getContentResolver();

  25:         //取得电话本中开始一项的光标，必须先moveToNext()

  26:         Cursor cursor = cr.query(ContactsContract.Contacts.CONTENT_URI,null, null, null, null);

  27:         while(cursor.moveToNext()){

  28:             //取得联系人的名字索引

  29:             int nameIndex  = cursor.getColumnIndex(PhoneLookup.DISPLAY_NAME);

  30:             String contact = cursor.getString(nameIndex);

  31:             string += (contact+":"+"/n");

  32:             

  33:             //取得联系人的ID索引值

  34:             String contactId = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts._ID)); 

  35:             //查询该位联系人的电话号码，类似的可以查询email，photo

  36:             Cursor phone = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,

  37:                     ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = "  

  38:                     + contactId, null, null);//第一个参数是确定查询电话号，第三个参数是查询具体某个人的过滤值

  39:             //一个人可能有几个号码

  40:             while(phone.moveToNext()){

  41:                 String strPhoneNumber = phone.getString(phone.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));

  42:                 string += (strPhoneNumber+"/n");

  43:             }

  44:             phone.close();

  45:         }

  46:         cursor.close();

  47:         //设置显示内容

  48:         tv.setText(string);

  49:         //显示

  50:         setContentView(tv);      

  51:         //setContentView(R.layout.main);

  52:     }

  53: }

三、注意点
最后要在AndroidManifest.xml的application之外加上
    <uses-permission
    android:name="android.permission.READ_CONTACTS">
    </uses-permission>