使用ContentProvider管理联系人 - JAVA

adapter.notifyDataSetChanged();
}
}

package com.lovo.activity;

import java.util.ArrayList;

import android.app.Activity;
import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.Button;
import android.widget.ExpandableListView;
import android.widget.TextView;

import com.lovo.lesson15.R;

/**
* 读取联系人的Activity
*
* @author Administrator
*
*/
public class ReadContactActivity extends Activity {

/**
* 保存联系人的姓名集合
*/
private ArrayList namesList = new ArrayList();
/**
* 保存联系人详细信息的集合
*/
private ArrayList> infoList = new ArrayList>();
private ExpandableListView elv;
private Button addContactBtn;
private BaseExpandableListAdapter adapter;

/**
* 初始化集合
*/
public void initData() {
namesList.clear();
infoList.clear();
// 查询联系人的基本信息
// 系统联系人的URI:ContactsContract.Contacts.CONTENT_URI
Cursor cursor = getContentResolver().query(
ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
while (cursor.moveToNext()) {
// 获取联系人的ID
int contactId = cursor.getInt(cursor
.getColumnIndex(ContactsContract.Contacts._ID));
// 获取联系人的姓名
String name = cursor.getString(cursor
.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
namesList.add(name);

// 存放每个联系人里面详细信息的集合，里面有电话号码和email
ArrayList detailList = new ArrayList();
// 查找电话号码
// 获取系统联系人电话号码的URI：ContactsContract.CommonDataKinds.Phone.CONTENT_URI
// 电话号码数据中对应联系人的ID列名：ContactsContract.CommonDataKinds.Phone.CONTACT_ID
Cursor phoneCursor = getContentResolver().query(
ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
null,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID + "="
+ contactId, null, null);
while (phoneCursor.moveToNext()) {
String phoneNumber = phoneCursor
.getString(phoneCursor
.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
detailList.add(phoneNumber);
}
phoneCursor.close();

// 查找联系人的email
// 获取联系人email的URI：ContactsContract.CommonDataKinds.Email.CONTENT_URI
// email数据中对应联系人的ID列名：ContactsContract.CommonDataKinds.Email.CONTACT_ID
Cursor emailCursor = getContentResolver().query(
ContactsContract.CommonDataKinds.Email.CONTENT_URI,
null,
ContactsContract.CommonDataKinds.Email.CONTACT_ID + "="
+ contactId, null, null);
while (emailCursor.moveToNext()) {
String email = emailCursor
.getString(emailCursor
.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA));
detailList.add(email);
}
emailCursor.close();
infoList.add(detailList);
}
cursor.close();
}

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.read_contact_main);
initData();
elv = (ExpandableListView) findViewById(R.id.read_contact_main_elv);
addContactBtn = (Button) findViewById(R.id.read_contact_main_btn_add);
addContactBtn.setOnClickListener(new OnClickListener() {

@Override
public void on

使用ContentProvider管理联系人 (四)