From 7657111eb164e2308a0b3d73b7483bb9e8ae02be Mon Sep 17 00:00:00 2001 From: wkf <2228796621@qq.com> Date: Thu, 29 May 2025 14:11:41 +0800 Subject: [PATCH] =?UTF-8?q?data-Contact=E6=B3=A8=E9=87=8A?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- src/net/micode/notes/data/Contact.java | 39 +++++++++++++++++++++----- 1 file changed, 32 insertions(+), 7 deletions(-) diff --git a/src/net/micode/notes/data/Contact.java b/src/net/micode/notes/data/Contact.java index 3e96108..98e2e9e 100644 --- a/src/net/micode/notes/data/Contact.java +++ b/src/net/micode/notes/data/Contact.java @@ -25,47 +25,72 @@ import android.util.Log; import java.util.HashMap; +/** + * 联系人工具类,用于根据电话号码从系统联系人中查找对应的姓名 + * 使用内存缓存提高查询效率,避免重复查询相同号码 + */ public class Contact { + // 联系人缓存:电话号码 -> 联系人姓名 private static HashMap sContactCache; private static final String TAG = "Contact"; + // 联系人查询的SQL选择条件模板 + // 通过PHONE_NUMBERS_EQUAL函数匹配号码,并确保数据类型为电话号码类型 + // 同时限定raw_contact_id必须存在于phone_lookup表中 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 = '+')"; + /** + * 根据电话号码查找对应的联系人姓名 + * + * @param context 应用上下文 + * @param phoneNumber 要查询的电话号码 + * @return 联系人姓名,如果未找到则返回null + */ public static String getContact(Context context, String phoneNumber) { + // 初始化联系人缓存(懒加载) if(sContactCache == null) { sContactCache = new HashMap(); } + // 优先从缓存中获取联系人姓名 if(sContactCache.containsKey(phoneNumber)) { return sContactCache.get(phoneNumber); } + // 构建查询条件,将电话号码转换为适合查询的格式 String selection = CALLER_ID_SELECTION.replace("+", PhoneNumberUtils.toCallerIDMinMatch(phoneNumber)); + + // 执行联系人查询 Cursor cursor = context.getContentResolver().query( - Data.CONTENT_URI, - new String [] { Phone.DISPLAY_NAME }, - selection, - new String[] { phoneNumber }, - null); + Data.CONTENT_URI, // 查询联系人数据URI + new String [] { Phone.DISPLAY_NAME }, // 只需要获取联系人姓名 + selection, // 查询条件 + new String[] { phoneNumber }, // 查询参数 + null); // 不指定排序 + // 处理查询结果 if (cursor != null && cursor.moveToFirst()) { try { + // 获取联系人姓名并添加到缓存 String name = cursor.getString(0); sContactCache.put(phoneNumber, name); return name; } catch (IndexOutOfBoundsException e) { + // 处理可能的索引越界异常 Log.e(TAG, " Cursor get string error " + e.toString()); return null; } finally { + // 确保关闭游标,防止资源泄漏 cursor.close(); } } else { + // 未找到匹配的联系人 Log.d(TAG, "No contact matched with number:" + phoneNumber); return null; }