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@ -25,47 +25,72 @@ import android.util.Log;
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import java.util.HashMap;
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import java.util.HashMap;
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/**
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* 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
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* 使用内存缓存提高查询效率,避免重复查询相同号码
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*/
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public class Contact {
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public class Contact {
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// 联系人缓存:电话号码 -> 联系人姓名
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private static HashMap<String, String> sContactCache;
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private static HashMap<String, String> sContactCache;
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private static final String TAG = "Contact";
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private static final String TAG = "Contact";
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// 联系人查询的SQL选择条件模板
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// 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
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// 同时限定raw_contact_id必须存在于phone_lookup表中
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private static final String CALLER_ID_SELECTION = "PHONE_NUMBERS_EQUAL(" + Phone.NUMBER
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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.MIMETYPE + "='" + Phone.CONTENT_ITEM_TYPE + "'"
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+ " AND " + Data.RAW_CONTACT_ID + " IN "
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+ " AND " + Data.RAW_CONTACT_ID + " IN "
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+ "(SELECT raw_contact_id "
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+ "(SELECT raw_contact_id "
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+ " FROM phone_lookup"
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+ " FROM phone_lookup"
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+ " WHERE min_match = '+')";
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+ " WHERE min_match = '+')";
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/**
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* 根据电话号码查找对应的联系人姓名
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*
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* @param context 应用上下文
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* @param phoneNumber 要查询的电话号码
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* @return 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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public static String getContact(Context context, String phoneNumber) {
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// 初始化联系人缓存(懒加载)
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if(sContactCache == null) {
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if(sContactCache == null) {
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sContactCache = new HashMap<String, String>();
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sContactCache = new HashMap<String, String>();
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}
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}
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// 优先从缓存中获取联系人姓名
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if(sContactCache.containsKey(phoneNumber)) {
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if(sContactCache.containsKey(phoneNumber)) {
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return sContactCache.get(phoneNumber);
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return sContactCache.get(phoneNumber);
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}
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}
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// 构建查询条件,将电话号码转换为适合查询的格式
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String selection = CALLER_ID_SELECTION.replace("+",
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String selection = CALLER_ID_SELECTION.replace("+",
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PhoneNumberUtils.toCallerIDMinMatch(phoneNumber));
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PhoneNumberUtils.toCallerIDMinMatch(phoneNumber));
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// 执行联系人查询
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Cursor cursor = context.getContentResolver().query(
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Cursor cursor = context.getContentResolver().query(
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Data.CONTENT_URI,
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Data.CONTENT_URI, // 查询联系人数据URI
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new String [] { Phone.DISPLAY_NAME },
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new String [] { Phone.DISPLAY_NAME }, // 只需要获取联系人姓名
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selection,
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selection, // 查询条件
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new String[] { phoneNumber },
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new String[] { phoneNumber }, // 查询参数
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null);
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null); // 不指定排序
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// 处理查询结果
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if (cursor != null && cursor.moveToFirst()) {
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if (cursor != null && cursor.moveToFirst()) {
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try {
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try {
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// 获取联系人姓名并添加到缓存
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String name = cursor.getString(0);
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String name = cursor.getString(0);
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sContactCache.put(phoneNumber, name);
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sContactCache.put(phoneNumber, name);
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return name;
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return name;
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} catch (IndexOutOfBoundsException e) {
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} catch (IndexOutOfBoundsException e) {
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// 处理可能的索引越界异常
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Log.e(TAG, " Cursor get string error " + e.toString());
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Log.e(TAG, " Cursor get string error " + e.toString());
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return null;
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return null;
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} finally {
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} finally {
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// 确保关闭游标,防止资源泄漏
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cursor.close();
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cursor.close();
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}
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}
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} else {
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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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Log.d(TAG, "No contact matched with number:" + phoneNumber);
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return null;
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return null;
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}
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}
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