最近开始学习Android,主要看的是《Android应用开发揭秘》,在第3章的Example_03_02是一个读取通讯录联系人姓名和电话的实例,但由于API 2.0中,每个联系人可以有多个电话(例如手机、住宅、公司、传真等),书中原有的实例在API 2.0的环境中会报错。
书中的Example_03_02代码:
View Code
package com.yarin.android.Examples_03_02;import android.app.Activity;import android.content.ContentResolver;import android.database.Cursor;import android.os.Bundle;import android.provider.ContactsContract;import android.provider.ContactsContract.PhoneLookup;import android.util.Log;import android.widget.TextView;import org.apache.commons.lang.StringUtils;public class Activity01 extends Activity{ public void onCreate(Bundle savedInstanceState) { TextView tv = new TextView(this); String string = ""; super.onCreate(savedInstanceState); //得到ContentResolver对象 ContentResolver cr = getContentResolver(); //取得电话本中开始一项的光标 Cursor cursor = cr.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null); Log.i("tag",Integer.toString(cursor.getColumnCount())) ; Log.i("tag",StringUtils.join(cursor.getColumnNames(), ",") ) ; //向下移动一下光标 while(cursor.moveToNext()) { //取得联系人名字 int nameFieldColumnIndex = cursor.getColumnIndex(PhoneLookup.DISPLAY_NAME); String contact = cursor.getString(nameFieldColumnIndex); //取得电话号码 (此方法会报错,因为一个联系人可能有多个联系电话) //int numberFieldColumnIndex = cursor.getColumnIndex(PhoneLookup._ID); //String number = cursor.getString(numberFieldColumnIndex); //string += (contact+":"+number+"\n"); //新方法获取电话号码 String ContactId = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts._ID)); Cursor phone = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, ContactsContract.CommonDataKinds.Phone.CONTACT_ID +"="+ ContactId, null, null); while(phone.moveToNext()) { String PhoneNumber = phone.getString(phone.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)); string += (contact +":"+ PhoneNumber +"\n"); } } cursor.close(); //设置TextView显示的内容 tv.setText(string); //显示到屏幕 setContentView(tv); }}
其中的原代码已被我注解,并改了正确的代码
如果我们只想获取手机号如何操作呢?
Cursor phone = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, ContactsContract.CommonDataKinds.Phone.CONTACT_ID + "=" + ContactId, null, null);
把以上语句改为:
Cursor phone = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, ContactsContract.CommonDataKinds.Phone.CONTACT_ID + "=" + ContactId + " AND " + ContactsContract.CommonDataKinds.Phone.TYPE + "=" + ContactsContract.CommonDataKinds.Phone.TYPE_MOBILE, null, null);
ContactsContract.CommonDataKinds.Phone.TYPE 表示联系人电话的类型,主要对应如下:TYPE_MOBILE : 手机号码TYPE_HOME : 住宅电话TYPE_WORK : 公司电话
最后附加main.xml的代码