From 4747ce7e00c77557347e23a23ccf27556dabc981 Mon Sep 17 00:00:00 2001 From: SHarkii <3376114135@qq.com> Date: Thu, 15 May 2025 09:03:46 +0800 Subject: [PATCH] =?UTF-8?q?=E8=81=94=E7=B3=BB=E4=BA=BA=E6=9F=A5=E8=AF=A2?= =?UTF-8?q?=E4=B8=8E=E7=BC=93=E5=AD=98?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../java/net/micode/notes/data/Contact.java | 55 +++++++++++++------ 1 file changed, 38 insertions(+), 17 deletions(-) diff --git a/app/src/main/java/net/micode/notes/data/Contact.java b/app/src/main/java/net/micode/notes/data/Contact.java index d97ac5d..283c3ed 100644 --- a/app/src/main/java/net/micode/notes/data/Contact.java +++ b/app/src/main/java/net/micode/notes/data/Contact.java @@ -1,17 +1,14 @@ /* - * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net) + * 版权声明 (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 + * 本文件采用 Apache License, Version 2.0 许可 + * 您可以在以下网址获取许可证副本: * * 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. + * 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 + * 不附带任何形式的明示或暗示保证 + * 有关许可证下的权限和限制，请参阅许可证文件 */ package net.micode.notes.data; @@ -25,49 +22,73 @@ import android.util.Log; import java.util.HashMap; +/** + * 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 + * 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 + */ public class Contact { + // 联系人缓存：键为电话号码，值为对应的联系人姓名 private static HashMap sContactCache; private static final String TAG = "Contact"; + // 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 + // 使用 PHONE_NUMBERS_EQUAL 函数处理号码格式差异（如区号、国际前缀等） private static final String CALLER_ID_SELECTION = "PHONE_NUMBERS_EQUAL(" + Phone.NUMBER - + ",?) AND " + Data.MIMETYPE + "='" + Phone.CONTENT_ITEM_TYPE + "'" - + " AND " + Data.RAW_CONTACT_ID + " IN " + + ",?) AND " + Data.MIMETYPE + "='" + Phone.CONTENT_ITEM_TYPE + "'" + + " AND " + Data.RAW_CONTACT_ID + " IN " + "(SELECT raw_contact_id " + " FROM phone_lookup" + " WHERE min_match = '+')"; + /** + * 根据电话号码查询联系人姓名（带缓存机制） + * + * @param context 应用上下文 + * @param phoneNumber 待查询的电话号码 + * @return 匹配的联系人姓名，如果未找到则返回null + */ public static String getContact(Context context, String phoneNumber) { + // 初始化缓存 if(sContactCache == null) { sContactCache = new HashMap(); } + // 优先从缓存中获取结果，提高性能 if(sContactCache.containsKey(phoneNumber)) { return sContactCache.get(phoneNumber); } + // 构建动态查询条件（处理不同格式的电话号码） String selection = CALLER_ID_SELECTION.replace("+", PhoneNumberUtils.toCallerIDMinMatch(phoneNumber)); + + // 查询联系人数据库 Cursor cursor = context.getContentResolver().query( - Data.CONTENT_URI, - new String [] { Phone.DISPLAY_NAME }, - selection, - new String[] { phoneNumber }, - null); + Data.CONTENT_URI, // 查询的URI（联系人数据） + new String [] { Phone.DISPLAY_NAME }, // 需要返回的字段（联系人姓名） + selection, // 查询条件 + new String[] { phoneNumber }, // 查询参数 + null); // 排序方式 + // 处理查询结果 if (cursor != null && cursor.moveToFirst()) { try { + // 获取联系人姓名并加入缓存 String name = cursor.getString(0); sContactCache.put(phoneNumber, name); return name; } catch (IndexOutOfBoundsException e) { + // 处理异常情况 Log.e(TAG, " Cursor get string error " + e.toString()); return null; } finally { + // 确保游标资源被释放 cursor.close(); } } else { + // 未找到匹配的联系人 Log.d(TAG, "No contact matched with number:" + phoneNumber); return null; } } -} +} \ No newline at end of file