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@ -1,17 +1,14 @@
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/*
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* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
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* 版权声明 (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* 本文件采用 Apache License, Version 2.0 许可
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* 您可以在以下网址获取许可证副本:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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* 除非适用法律要求或书面同意，否则根据许可证分发的软件按"原样"分发
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* 不附带任何形式的明示或暗示保证
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* 有关许可证下的权限和限制，请参阅许可证文件
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*/
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package net.micode.notes.data;
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@ -25,49 +22,73 @@ import android.util.Log;
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import java.util.HashMap;
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/**
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* 联系人工具类 - 提供从手机联系人数据库查询电话号码对应的联系人姓名功能
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* 实现了联系人查询结果的内存缓存，避免重复查询提高性能
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*/
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public class Contact {
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// 联系人缓存：键为电话号码，值为对应的联系人姓名
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private static HashMap<String, String> sContactCache;
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private static final String TAG = "Contact";
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// 联系人查询SQL模板：用于查找与给定电话号码匹配的联系人
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// 使用 PHONE_NUMBERS_EQUAL 函数处理号码格式差异（如区号、国际前缀等）
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private static final String CALLER_ID_SELECTION = "PHONE_NUMBERS_EQUAL(" + Phone.NUMBER
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+ ",?) AND " + Data.MIMETYPE + "='" + Phone.CONTENT_ITEM_TYPE + "'"
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+ " AND " + Data.RAW_CONTACT_ID + " IN "
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+ ",?) AND " + Data.MIMETYPE + "='" + Phone.CONTENT_ITEM_TYPE + "'"
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+ " AND " + Data.RAW_CONTACT_ID + " IN "
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+ "(SELECT raw_contact_id "
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+ " FROM phone_lookup"
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+ " WHERE min_match = '+')";
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/**
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* 根据电话号码查询联系人姓名（带缓存机制）
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*
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* @param context 应用上下文
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* @param phoneNumber 待查询的电话号码
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* @return 匹配的联系人姓名，如果未找到则返回null
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*/
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public static String getContact(Context context, String phoneNumber) {
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// 初始化缓存
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if(sContactCache == null) {
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sContactCache = new HashMap<String, String>();
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}
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// 优先从缓存中获取结果，提高性能
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if(sContactCache.containsKey(phoneNumber)) {
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return sContactCache.get(phoneNumber);
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}
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// 构建动态查询条件（处理不同格式的电话号码）
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String selection = CALLER_ID_SELECTION.replace("+",
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PhoneNumberUtils.toCallerIDMinMatch(phoneNumber));
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// 查询联系人数据库
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Cursor cursor = context.getContentResolver().query(
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Data.CONTENT_URI,
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new String [] { Phone.DISPLAY_NAME },
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selection,
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new String[] { phoneNumber },
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null);
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Data.CONTENT_URI, // 查询的URI（联系人数据）
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new String [] { Phone.DISPLAY_NAME }, // 需要返回的字段（联系人姓名）
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selection, // 查询条件
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new String[] { phoneNumber }, // 查询参数
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null); // 排序方式
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// 处理查询结果
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if (cursor != null && cursor.moveToFirst()) {
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try {
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// 获取联系人姓名并加入缓存
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String name = cursor.getString(0);
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sContactCache.put(phoneNumber, name);
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return name;
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} catch (IndexOutOfBoundsException e) {
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// 处理异常情况
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Log.e(TAG, " Cursor get string error " + e.toString());
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return null;
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} finally {
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// 确保游标资源被释放
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cursor.close();
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}
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} else {
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// 未找到匹配的联系人
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Log.d(TAG, "No contact matched with number:" + phoneNumber);
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return null;
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}
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}
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}
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}
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