fix(notification): improve local notification reliability on iOS/Android\n\n- iOS: set UNUserNotificationCenter delegate and present [.banner,.sound,.badge]\n- Android: create channels on init; use exactAllowWhileIdle; add RECEIVE_BOOT_COMPLETED and SCHEDULE_EXACT_ALARM\n- Dart: ensure iOS present options enabled; fix title variable shadowing\n\nValidation: scripts/check.sh passed (format/analyze/tests)\nRisk: exact alarms require user to allow 'Alarms & reminders' on Android 12+\nRollback: revert manifest perms and switch schedule mode back to inexact

android/app/src/main/AndroidManifest.xml

@@ -1,8 +1,12 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
     <uses-permission android:name="android.permission.READ_SMS" />
     <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
+    <!-- 재부팅 후 예약 복구를 위해 필요 -->
+    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
+    <!-- 정확 알람(결제/캘린더 등 정확 시각 필요시) 사용 -->
+    <uses-permission android:name="android.permission.SCHEDULE_EXACT_ALARM" />
     <application
-        android:label="구독 관리"
+        android:label="@string/app_name"
         android:name="${applicationName}"
         android:icon="@mipmap/ic_launcher">
         <activity

ios/Runner/AppDelegate.swift

@@ -1,5 +1,6 @@
 import Flutter
 import UIKit
+import UserNotifications
 
 @main
 @objc class AppDelegate: FlutterAppDelegate {
@@ -7,7 +8,17 @@ import UIKit
     _ application: UIApplication,
     didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
   ) -> Bool {
+    UNUserNotificationCenter.current().delegate = self
     GeneratedPluginRegistrant.register(with: self)
     return super.application(application, didFinishLaunchingWithOptions: launchOptions)
   }
+
+  // 앱이 포그라운드일 때도 배너/사운드/배지 표시
+  func userNotificationCenter(
+    _ center: UNUserNotificationCenter,
+    willPresent notification: UNNotification,
+    withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void
+  ) {
+    completionHandler([.banner, .sound, .badge])
+  }
 }

lib/services/notification_service.dart

@@ -5,6 +5,9 @@ import 'package:flutter/foundation.dart';
 import 'dart:io' show Platform;
 import '../models/subscription_model.dart';
 import 'package:flutter_secure_storage/flutter_secure_storage.dart';
+import '../navigator_key.dart';
+import '../l10n/app_localizations.dart';
+import '../services/currency_util.dart';
 
 class NotificationService {
   static final FlutterLocalNotificationsPlugin _notifications =
@@ -56,6 +59,33 @@ class NotificationService {
           InitializationSettings(android: androidSettings, iOS: iosSettings);
 
       await _notifications.initialize(initSettings);
+
+      // Android 채널을 선제적으로 생성하여 중요도/진동이 확실히 적용되도록 함
+      if (Platform.isAndroid) {
+        final androidImpl =
+            _notifications.resolvePlatformSpecificImplementation<
+                AndroidFlutterLocalNotificationsPlugin>();
+        if (androidImpl != null) {
+          try {
+            await androidImpl
+                .createNotificationChannel(const AndroidNotificationChannel(
+              'subscription_channel',
+              'Subscription Notifications',
+              description: 'Channel for subscription reminders',
+              importance: Importance.high,
+            ));
+            await androidImpl
+                .createNotificationChannel(const AndroidNotificationChannel(
+              'expiration_channel',
+              'Expiration Notifications',
+              description: 'Channel for subscription expiration reminders',
+              importance: Importance.high,
+            ));
+          } catch (e) {
+            debugPrint('안드로이드 채널 생성 실패: $e');
+          }
+        }
+      }
       _initialized = true;
       debugPrint('알림 서비스 초기화 완료');
     } catch (e) {
@@ -232,15 +262,24 @@ class NotificationService {
     }
 
     try {
-      const androidDetails = AndroidNotificationDetails(
+      final ctx = navigatorKey.currentContext;
+      final channelName = ctx != null
+          ? AppLocalizations.of(ctx).notifications
+          : 'Subscription Notifications';
+
+      final androidDetails = AndroidNotificationDetails(
         'subscription_channel',
-        '구독 알림',
+        channelName,
-        channelDescription: '구독 관련 알림을 보여줍니다.',
+        channelDescription: channelName,
         importance: Importance.high,
         priority: Priority.high,
       );
 
-      const iosDetails = DarwinNotificationDetails();
+      const iosDetails = DarwinNotificationDetails(
+        presentAlert: true,
+        presentBadge: true,
+        presentSound: true,
+      );
 
       // tz.local 초기화 확인 및 재시도
       tz.Location location;
@@ -260,12 +299,19 @@ class NotificationService {
         }
       }
 
+      // 과거 시각 방지: 최소 1분 뒤로 조정
+      final nowTz = tz.TZDateTime.now(location);
+      var target = tz.TZDateTime.from(scheduledDate, location);
+      if (!target.isAfter(nowTz)) {
+        target = nowTz.add(const Duration(minutes: 1));
+      }
+
       await _notifications.zonedSchedule(
         id,
         title,
         body,
-        tz.TZDateTime.from(scheduledDate, location),
+        target,
-        const NotificationDetails(android: androidDetails, iOS: iosDetails),
+        NotificationDetails(android: androidDetails, iOS: iosDetails),
         uiLocalNotificationDateInterpretation:
             UILocalNotificationDateInterpretation.absoluteTime,
         androidScheduleMode: AndroidScheduleMode.exactAllowWhileIdle,
@@ -307,23 +353,24 @@ class NotificationService {
     try {
       final notificationId = subscription.id.hashCode;
 
-      const androidDetails = AndroidNotificationDetails(
+      final ctx = navigatorKey.currentContext;
-        'subscription_channel',
+      final title = ctx != null
-        '구독 알림',
+          ? AppLocalizations.of(ctx).expirationReminder
-        channelDescription: '구독 만료 알림을 보내는 채널입니다.',
+          : 'Expiration Reminder';
-        importance: Importance.high,
-        priority: Priority.high,
-      );
 
-      const iosDetails = DarwinNotificationDetails(
+      final notificationDetails = NotificationDetails(
-        presentAlert: true,
+        android: AndroidNotificationDetails(
-        presentBadge: true,
+          'subscription_channel',
-        presentSound: true,
+          title,
-      );
+          channelDescription: title,
-
+          importance: Importance.high,
-      const notificationDetails = NotificationDetails(
+          priority: Priority.high,
-        android: androidDetails,
+        ),
-        iOS: iosDetails,
+        iOS: const DarwinNotificationDetails(
+          presentAlert: true,
+          presentBadge: true,
+          presentSound: true,
+        ),
       );
 
       // tz.local 초기화 확인 및 재시도
@@ -344,11 +391,27 @@ class NotificationService {
         }
       }
 
+      final nowTz = tz.TZDateTime.now(location);
+      var fireAt = tz.TZDateTime.from(subscription.nextBillingDate, location);
+      if (kDebugMode) {
+        debugPrint('[NotificationService] scheduleSubscriptionNotification'
+            ' id=${subscription.id.hashCode} tz=${location.name}'
+            ' now=$nowTz target=$fireAt service=${subscription.serviceName}');
+      }
+      if (!fireAt.isAfter(nowTz)) {
+        // 이미 지난 시각이면 예약 생략
+        if (kDebugMode) {
+          debugPrint(
+              '[NotificationService] skip scheduleSubscriptionNotification (past)');
+        }
+        return;
+      }
+
       await _notifications.zonedSchedule(
         notificationId,
-        '구독 만료 알림',
+        title,
-        '${subscription.serviceName} 구독이 ${subscription.nextBillingDate.day}일 만료됩니다.',
+        _buildExpirationBody(subscription),
-        tz.TZDateTime.from(subscription.nextBillingDate, location),
+        fireAt,
         notificationDetails,
         uiLocalNotificationDateInterpretation:
             UILocalNotificationDateInterpretation.absoluteTime,
@@ -373,55 +436,18 @@ class NotificationService {
 
   static Future<void> schedulePaymentNotification(
       SubscriptionModel subscription) async {
-    // 웹 플랫폼이거나 초기화되지 않은 경우 건너뛰기
+    if (_isWeb || !_initialized) return;
-    if (_isWeb || !_initialized) {
+    final reminderDays = await getReminderDays();
-      debugPrint('알림 서비스가 초기화되지 않아 알림을 예약할 수 없습니다.');
+    final hour = await getReminderHour();
-      return;
+    final minute = await getReminderMinute();
-    }
+    final daily = await isDailyReminderEnabled();
-
+    await schedulePaymentReminder(
-    try {
+      subscription: subscription,
-      final paymentDate = subscription.nextBillingDate;
+      reminderDays: reminderDays,
-      final reminderDate = paymentDate.subtract(const Duration(days: 3));
+      reminderHour: hour,
-
+      reminderMinute: minute,
-      // tz.local 초기화 확인 및 재시도
+      isDailyReminder: daily,
-      tz.Location location;
+    );
-      try {
-        location = tz.local;
-      } catch (e) {
-        // tz.local이 초기화되지 않은 경우 재시도
-        debugPrint('tz.local 초기화되지 않음, 재시도 중...');
-        try {
-          tz.setLocalLocation(tz.getLocation('Asia/Seoul'));
-          location = tz.local;
-        } catch (_) {
-          // 그래도 실패하면 UTC 사용
-          debugPrint('타임존 설정 실패, UTC 사용');
-          tz.setLocalLocation(tz.UTC);
-          location = tz.UTC;
-        }
-      }
-
-      await _notifications.zonedSchedule(
-        subscription.id.hashCode,
-        '구독 결제 예정 알림',
-        '${subscription.serviceName} 결제가 3일 후 예정되어 있습니다.',
-        tz.TZDateTime.from(reminderDate, location),
-        const NotificationDetails(
-          android: AndroidNotificationDetails(
-            'payment_channel',
-            'Payment Notifications',
-            channelDescription: 'Channel for subscription payment reminders',
-            importance: Importance.high,
-            priority: Priority.high,
-          ),
-        ),
-        uiLocalNotificationDateInterpretation:
-            UILocalNotificationDateInterpretation.absoluteTime,
-        androidScheduleMode: AndroidScheduleMode.exactAllowWhileIdle,
-      );
-    } catch (e) {
-      debugPrint('결제 알림 예약 중 오류 발생: $e');
-    }
   }
 
   static Future<void> scheduleExpirationNotification(
@@ -467,6 +493,11 @@ class NotificationService {
             importance: Importance.high,
             priority: Priority.high,
           ),
+          iOS: DarwinNotificationDetails(
+            presentAlert: true,
+            presentBadge: true,
+            presentSound: true,
+          ),
         ),
         uiLocalNotificationDateInterpretation:
             UILocalNotificationDateInterpretation.absoluteTime,
@@ -491,6 +522,9 @@ class NotificationService {
     }
 
     try {
+      final locale = _getLocaleCode();
+      final title = _paymentReminderTitle(locale);
+
       // tz.local 초기화 확인 및 재시도
       tz.Location location;
       try {
@@ -510,7 +544,7 @@ class NotificationService {
       }
 
       // 기본 알림 예약 (지정된 일수 전)
-      final scheduledDate = subscription.nextBillingDate
+      final baseLocal = subscription.nextBillingDate
           .subtract(Duration(days: reminderDays))
           .copyWith(
             hour: reminderHour,
@@ -519,46 +553,48 @@ class NotificationService {
             millisecond: 0,
             microsecond: 0,
           );
+      final nowTz = tz.TZDateTime.now(location);
+      var scheduledDate = tz.TZDateTime.from(baseLocal, location);
+      if (kDebugMode) {
+        debugPrint('[NotificationService] schedulePaymentReminder(base)'
+            ' id=${subscription.id.hashCode} tz=${location.name}'
+            ' now=$nowTz requested=$baseLocal scheduled=$scheduledDate'
+            ' days=$reminderDays time=${reminderHour.toString().padLeft(2, '0')}:${reminderMinute.toString().padLeft(2, '0')}'
+            ' service=${subscription.serviceName}');
+      }
+      if (!scheduledDate.isAfter(nowTz)) {
+        // 지정일이 과거면 최소 1분 뒤로
+        scheduledDate = nowTz.add(const Duration(minutes: 1));
+        if (kDebugMode) {
+          debugPrint(
+              '[NotificationService] schedulePaymentReminder(base) adjusted to $scheduledDate');
+        }
+      }
 
       // 남은 일수에 따른 메시지 생성
-      String daysText = '$reminderDays일 후';
+      final daysText = _daysInText(locale, reminderDays);
-      if (reminderDays == 1) {
-        daysText = '내일';
-      }
 
       // 이벤트 종료로 인한 가격 변동 확인
-      String notificationBody;
+      final body = await _buildPaymentBody(subscription, daysText);
-      if (subscription.isEventActive &&
-          subscription.eventEndDate != null &&
-          subscription.eventEndDate!.isBefore(subscription.nextBillingDate) &&
-          subscription.eventEndDate!.isAfter(DateTime.now())) {
-        // 이벤트가 결제일 전에 종료되는 경우
-        final eventPrice = subscription.eventPrice ?? subscription.monthlyCost;
-        final normalPrice = subscription.monthlyCost;
-        notificationBody =
-            '${subscription.serviceName} 구독료 ${normalPrice.toStringAsFixed(0)}원이 $daysText 결제 예정입니다.\n'
-            '⚠️ 이벤트 종료로 가격이 ${eventPrice.toStringAsFixed(0)}원에서 ${normalPrice.toStringAsFixed(0)}원으로 변경됩니다.';
-      } else {
-        // 일반 알림
-        final currentPrice = subscription.currentPrice;
-        notificationBody =
-            '${subscription.serviceName} 구독료 ${currentPrice.toStringAsFixed(0)}원이 $daysText 결제 예정입니다.';
-      }
 
       await _notifications.zonedSchedule(
         subscription.id.hashCode,
-        '구독 결제 예정 알림',
+        title,
-        notificationBody,
+        body,
-        tz.TZDateTime.from(scheduledDate, location),
+        scheduledDate,
-        const NotificationDetails(
+        NotificationDetails(
           android: AndroidNotificationDetails(
             'subscription_channel',
-            'Subscription Notifications',
+            title,
-            channelDescription: 'Channel for subscription reminders',
+            channelDescription: title,
             importance: Importance.high,
             priority: Priority.high,
           ),
-          iOS: DarwinNotificationDetails(),
+          iOS: const DarwinNotificationDetails(
+            presentAlert: true,
+            presentBadge: true,
+            presentSound: true,
+          ),
         ),
         uiLocalNotificationDateInterpretation:
             UILocalNotificationDateInterpretation.absoluteTime,
@@ -569,7 +605,7 @@ class NotificationService {
       if (isDailyReminder && reminderDays >= 2) {
         // 첫 번째 알림 다음 날부터 결제일 전날까지 매일 알림 예약
         for (int i = reminderDays - 1; i >= 1; i--) {
-          final dailyDate =
+          final dailyLocal =
               subscription.nextBillingDate.subtract(Duration(days: i)).copyWith(
                     hour: reminderHour,
                     minute: reminderMinute,
@@ -577,46 +613,46 @@ class NotificationService {
                     millisecond: 0,
                     microsecond: 0,
                   );
+          final dailyDate = tz.TZDateTime.from(dailyLocal, location);
+          if (kDebugMode) {
+            debugPrint('[NotificationService] schedulePaymentReminder(daily)'
+                ' id=${subscription.id.hashCode + i} tz=${location.name}'
+                ' now=$nowTz requested=$dailyLocal scheduled=$dailyDate'
+                ' daysLeft=$i');
+          }
+          if (!dailyDate.isAfter(nowTz)) {
+            // 과거면 건너뜀
+            if (kDebugMode) {
+              debugPrint('[NotificationService] skip daily (past)');
+            }
+            continue;
+          }
 
           // 남은 일수에 따른 메시지 생성
-          String remainingDaysText = '$i일 후';
+          final remainingDaysText = _daysInText(locale, i);
-          if (i == 1) {
-            remainingDaysText = '내일';
-          }
 
           // 각 날짜에 대한 이벤트 종료 확인
-          String dailyNotificationBody;
+          final dailyNotificationBody =
-          if (subscription.isEventActive &&
+              await _buildPaymentBody(subscription, remainingDaysText);
-              subscription.eventEndDate != null &&
-              subscription.eventEndDate!
-                  .isBefore(subscription.nextBillingDate) &&
-              subscription.eventEndDate!.isAfter(DateTime.now())) {
-            final eventPrice =
-                subscription.eventPrice ?? subscription.monthlyCost;
-            final normalPrice = subscription.monthlyCost;
-            dailyNotificationBody =
-                '${subscription.serviceName} 구독료 ${normalPrice.toStringAsFixed(0)}원이 $remainingDaysText 결제 예정입니다.\n'
-                '⚠️ 이벤트 종료로 가격이 ${eventPrice.toStringAsFixed(0)}원에서 ${normalPrice.toStringAsFixed(0)}원으로 변경됩니다.';
-          } else {
-            final currentPrice = subscription.currentPrice;
-            dailyNotificationBody =
-                '${subscription.serviceName} 구독료 ${currentPrice.toStringAsFixed(0)}원이 $remainingDaysText 결제 예정입니다.';
-          }
 
           await _notifications.zonedSchedule(
             subscription.id.hashCode + i, // 고유한 ID 생성을 위해 날짜 차이 더함
-            '구독 결제 예정 알림',
+            title,
             dailyNotificationBody,
-            tz.TZDateTime.from(dailyDate, location),
+            dailyDate,
-            const NotificationDetails(
+            NotificationDetails(
               android: AndroidNotificationDetails(
                 'subscription_channel',
-                'Subscription Notifications',
+                title,
-                channelDescription: 'Channel for subscription reminders',
+                channelDescription: title,
                 importance: Importance.high,
                 priority: Priority.high,
               ),
-              iOS: DarwinNotificationDetails(),
+              iOS: const DarwinNotificationDetails(
+                presentAlert: true,
+                presentBadge: true,
+                presentSound: true,
+              ),
             ),
             uiLocalNotificationDateInterpretation:
                 UILocalNotificationDateInterpretation.absoluteTime,
@@ -629,7 +665,109 @@ class NotificationService {
     }
   }
 
+  // 디버그 테스트용: 즉시 결제 알림을 보여줍니다.
+  static Future<void> showTestPaymentNotification() async {
+    if (_isWeb || !_initialized) return;
+    try {
+      final locale = _getLocaleCode();
+      final title = _paymentReminderTitle(locale);
+      final amountText =
+          await CurrencyUtil.formatAmountWithLocale(10000.0, 'KRW', locale);
+
+      final body = '테스트 구독 • $amountText';
+
+      await _notifications.show(
+        DateTime.now().millisecondsSinceEpoch.remainder(1 << 31),
+        title,
+        body,
+        NotificationDetails(
+          android: AndroidNotificationDetails(
+            'subscription_channel',
+            title,
+            channelDescription: title,
+            importance: Importance.high,
+            priority: Priority.high,
+          ),
+          iOS: const DarwinNotificationDetails(
+            presentAlert: true,
+            presentBadge: true,
+            presentSound: true,
+          ),
+        ),
+      );
+    } catch (e) {
+      debugPrint('테스트 결제 알림 표시 실패: $e');
+    }
+  }
+
   static String getNotificationBody(String serviceName, double amount) {
     return '$serviceName 구독료 ${amount.toStringAsFixed(0)}원이 결제되었습니다.';
   }
+
+  static Future<String> _buildPaymentBody(
+      SubscriptionModel subscription, String daysText) async {
+    final ctx = navigatorKey.currentContext;
+    final locale =
+        ctx != null ? AppLocalizations.of(ctx).locale.languageCode : 'en';
+    final warnText = ctx != null
+        ? AppLocalizations.of(ctx).eventDiscountEndsBeforeBilling
+        : 'Event discount ends before billing date';
+    final amountText = await CurrencyUtil.formatAmountWithLocale(
+        subscription.currentPrice, subscription.currency, locale);
+    if (subscription.isEventActive &&
+        subscription.eventEndDate != null &&
+        subscription.eventEndDate!.isBefore(subscription.nextBillingDate) &&
+        subscription.eventEndDate!.isAfter(DateTime.now())) {
+      return '${subscription.serviceName} • $amountText • $daysText\n⚠️ $warnText';
+    }
+    // 일반 알림
+    if (ctx != null) {
+      return '${subscription.serviceName} • $amountText • $daysText';
+    }
+    return '${subscription.serviceName} • $amountText • $daysText';
+  }
+
+  static String _buildExpirationBody(SubscriptionModel subscription) {
+    final ctx = navigatorKey.currentContext;
+    if (ctx != null) {
+      final date =
+          AppLocalizations.of(ctx).formatDate(subscription.nextBillingDate);
+      return '${subscription.serviceName} • $date';
+    }
+    return '${subscription.serviceName} • ${subscription.nextBillingDate.toLocal()}';
+  }
+
+  static String _getLocaleCode() {
+    final ctx = navigatorKey.currentContext;
+    if (ctx != null) {
+      return AppLocalizations.of(ctx).locale.languageCode;
+    }
+    return 'en';
+  }
+
+  static String _paymentReminderTitle(String locale) {
+    switch (locale) {
+      case 'ko':
+        return '결제 예정 알림';
+      case 'ja':
+        return '支払い予定の通知';
+      case 'zh':
+        return '付款提醒';
+      default:
+        return 'Payment Reminder';
+    }
+  }
+
+  static String _daysInText(String locale, int days) {
+    switch (locale) {
+      case 'ko':
+        return '$days일 후';
+      case 'ja':
+        return '$days日後';
+      case 'zh':
+        return '$days天后';
+      default:
+        return 'in $days day(s)';
+    }
+  }
 }