|
|
/*
|
|
|
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
|
|
|
*
|
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
|
* you may not use this file except in compliance with the License.
|
|
|
* You may obtain a copy of the License at
|
|
|
*
|
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
|
*
|
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
|
* See the License for the specific language governing permissions and
|
|
|
* limitations under the License.
|
|
|
*/
|
|
|
|
|
|
package net.micode.notes.data; //将该类放在data包中
|
|
|
|
|
|
import android.content.Context; //有关应用程序环境的全局信息的接口。
|
|
|
import android.database.Cursor; //此接口提供对数据库查询返回的结果集的随机读写访问。
|
|
|
import android.provider.ContactsContract.CommonDataKinds.Phone;//用于通讯中的类，读取电话号码
|
|
|
import android.provider.ContactsContract.Data;//提供的常量
|
|
|
import android.telephony.PhoneNumberUtils;//获取手机短信
|
|
|
import android.util.Log;
|
|
|
|
|
|
import java.util.HashMap; //在util包中的一个类
|
|
|
|
|
|
public class Contact { //声明一个公有类
|
|
|
private static HashMap<String, String> sContactCache; //一个静态的hashmap的对象，且数据类型是两个string类
|
|
|
private static final String TAG = "Contact"; //一个静态常量的string类型
|
|
|
|
|
|
private static final String CALLER_ID_SELECTION = "PHONE_NUMBERS_EQUAL(" + Phone.NUMBER
|
|
|
+ ",?) AND " + Data.MIMETYPE + "='" + Phone.CONTENT_ITEM_TYPE + "'" //使得MIMETYPE获得电话
|
|
|
+ " AND " + Data.RAW_CONTACT_ID + " IN "
|
|
|
+ "(SELECT raw_contact_id "
|
|
|
+ " FROM phone_lookup"
|
|
|
+ " WHERE min_match = '+')";
|
|
|
|
|
|
public static String getContact(Context context, String phoneNumber) {
|
|
|
if(sContactCache == null) {//判断scontactcache是否为空
|
|
|
sContactCache = new HashMap<String, String>();//如果为空，则为scontactcache申请空间
|
|
|
}
|
|
|
|
|
|
if(sContactCache.containsKey(phoneNumber)) {//检查phonenumber是否存在指定的映射关系，返回一个boolean类型的数据
|
|
|
return sContactCache.get(phoneNumber);//返回改key所对应的value值
|
|
|
}
|
|
|
|
|
|
String selection = CALLER_ID_SELECTION.replace("+", //replace是查找并替换，将+号用
|
|
|
PhoneNumberUtils.toCallerIDMinMatch(phoneNumber)); //构建一个查询时，生成后七位号码
|
|
|
Cursor cursor = context.getContentResolver().query( //得到一个context的对象并进行数据查询
|
|
|
Data.CONTENT_URI, //对应的是联系人数据表，在数据表中查找数据
|
|
|
new String [] { Phone.DISPLAY_NAME },//联系人名称
|
|
|
selection,
|
|
|
new String[] { phoneNumber },
|
|
|
null);
|
|
|
|
|
|
if (cursor != null && cursor.moveToFirst()) { //cursor不为空，且查询结果不为空
|
|
|
try {
|
|
|
String name = cursor.getString(0); //获得第一个列值
|
|
|
sContactCache.put(phoneNumber, name); //容器中放入号码和姓名
|
|
|
return name; //返回得到的名字
|
|
|
} catch (IndexOutOfBoundsException e) {
|
|
|
Log.e(TAG, " Cursor get string error " + e.toString()); //提示获取失败
|
|
|
return null; //如果发生异常返回空
|
|
|
} finally {
|
|
|
cursor.close(); //将cursor关闭
|
|
|
}
|
|
|
} else { //没有查找到姓名
|
|
|
Log.d(TAG, "No contact matched with number:" + phoneNumber); //错误提示
|
|
|
return null; //返回空
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
