fix: Android 카메라 호출 후 앱 kill 시 WebView URL 복원

lib/bridge/web_view_bridge_handler.dart

@@ -11,6 +11,7 @@ import 'package:logger/logger.dart';
 import 'package:image_picker/image_picker.dart';
 import 'package:permission_handler/permission_handler.dart';
 import 'package:flutter_inappwebview/flutter_inappwebview.dart';
+import 'package:app/utils/url_restore_manager.dart';
 
 class WebViewBridgeHandler {
   final BuildContext context;
@@ -219,6 +220,13 @@ class WebViewBridgeHandler {
     }
 
     try {
+      // Android에서 카메라 호출 전 현재 URL 저장 (앱이 kill될 경우 복원용)
+      final currentUrl = await controller.getUrl();
+      if (currentUrl != null) {
+        await UrlRestoreManager.saveUrlBeforeCamera(currentUrl.toString());
+        logger.d('카메라 호출 전 URL 저장: $currentUrl');
+      }
+
       onShowLoading?.call('사진 촬영 중...');
       final ImagePicker picker = ImagePicker();
       final XFile? image = await picker.pickImage(
@@ -235,9 +243,14 @@ class WebViewBridgeHandler {
           source: "openAlbum('data:image/png;base64,$base64Image')",
         );
       }
+
+      // 정상 복귀 시 저장된 URL 삭제 (앱이 kill되지 않았으므로)
+      await UrlRestoreManager.clearSavedUrl();
       onHideLoading?.call();
     } catch (e) {
       logger.e('Error taking image: $e');
+      // 에러 시에도 저장된 URL 삭제
+      await UrlRestoreManager.clearSavedUrl();
       onHideLoading?.call();
     }
   }

lib/main.dart

@@ -1,6 +1,7 @@
 import 'package:app/permissions/FirebaseConfig.dart';
 import 'package:app/ui/loading_widget.dart';
 import 'package:app/utils/env/env.dart';
+import 'package:app/utils/url_restore_manager.dart';
 import 'package:app/web_view/web_view.dart';
 import 'package:flutter/material.dart';
 import 'package:kakao_flutter_sdk/kakao_flutter_sdk_template.dart';
@@ -142,25 +143,44 @@ class SplashScreen extends StatefulWidget {
 }
 
 class _SplashScreenState extends State<SplashScreen> {
+  String? _restoredUrl;
+
   @override
   void initState() {
     super.initState();
+    _initializeAndNavigate();
+  }
 
-    Future.delayed(const Duration(seconds: 3), () {
-      Navigator.of(context).pushReplacement(
-        PageRouteBuilder(
-          pageBuilder: (context, animation, secondaryAnimation) =>
-              const BottleNoteWebView(),
-          transitionsBuilder: (context, animation, secondaryAnimation, child) {
-            return FadeTransition(
-              opacity: animation,
-              child: child,
-            );
-          },
-          transitionDuration: const Duration(milliseconds: 1000),
-        ),
-      );
-    });
+  Future<void> _initializeAndNavigate() async {
+    try {
+      // Android에서 카메라 호출 후 앱이 kill된 경우 복원할 URL 확인
+      final restoredUrl = await UrlRestoreManager.consumeRestoredUrl();
+      if (restoredUrl != null) {
+        logger.d('복원할 URL 발견: $restoredUrl');
+        _restoredUrl = restoredUrl;
+      }
+
+      // 최소 3초 대기 (기존 동작 유지)
+      await Future.delayed(const Duration(seconds: 3));
+    } catch (e) {
+      logger.e('스플래시 초기화 중 오류 발생: $e');
+    }
+
+    if (!mounted) return;
+
+    Navigator.of(context).pushReplacement(
+      PageRouteBuilder(
+        pageBuilder: (context, animation, secondaryAnimation) =>
+            BottleNoteWebView(initialUrl: _restoredUrl),
+        transitionsBuilder: (context, animation, secondaryAnimation, child) {
+          return FadeTransition(
+            opacity: animation,
+            child: child,
+          );
+        },
+        transitionDuration: const Duration(milliseconds: 1000),
+      ),
+    );
   }
 
   @override

lib/utils/url_restore_manager.dart

@@ -0,0 +1,57 @@
+import 'dart:io' show Platform;
+import 'package:shared_preferences/shared_preferences.dart';
+
+/// Android에서 카메라 호출 후 앱이 kill되었을 때 URL을 복원하기 위한 매니저
+class UrlRestoreManager {
+  static const String _pendingUrlKey = 'pending_restore_url';
+  static const String _timestampKey = 'pending_restore_timestamp';
+
+  /// URL 복원 유효 시간 (5분)
+  static const int _validDurationMinutes = 5;
+
+  /// 카메라 호출 전 현재 URL 저장 (Android 전용)
+  static Future<void> saveUrlBeforeCamera(String url) async {
+    if (!Platform.isAndroid) return;
+
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setString(_pendingUrlKey, url);
+    await prefs.setInt(_timestampKey, DateTime.now().millisecondsSinceEpoch);
+  }
+
+  /// 저장된 URL 가져오기 및 삭제 (Android 전용)
+  /// 유효 시간이 지났거나 URL이 없으면 null 반환
+  static Future<String?> consumeRestoredUrl() async {
+    if (!Platform.isAndroid) return null;
+
+    final prefs = await SharedPreferences.getInstance();
+    final savedUrl = prefs.getString(_pendingUrlKey);
+    final savedTimestamp = prefs.getInt(_timestampKey);
+
+    // 저장된 URL이 없으면 null
+    if (savedUrl == null || savedTimestamp == null) {
+      return null;
+    }
+
+    // 유효 시간 체크 (5분 초과시 무효)
+    final now = DateTime.now().millisecondsSinceEpoch;
+    final elapsed = now - savedTimestamp;
+    if (elapsed > _validDurationMinutes * 60 * 1000) {
+      // 만료된 데이터도 정리
+      await clearSavedUrl();
+      return null;
+    }
+
+    // 정상적으로 복원된 경우 사용 후 삭제
+    await clearSavedUrl();
+    return savedUrl;
+  }
+
+  /// 저장된 URL 삭제 (정상 카메라 복귀 시 호출)
+  static Future<void> clearSavedUrl() async {
+    if (!Platform.isAndroid) return;
+
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.remove(_pendingUrlKey);
+    await prefs.remove(_timestampKey);
+  }
+}

lib/web_view/web_view.dart

@@ -17,7 +17,9 @@ import '../actions/back_action_handler.dart';
 
 class BottleNoteWebView extends StatefulWidget {
   final VoidCallback? onLoaded;
-  const BottleNoteWebView({super.key, this.onLoaded});
+  final String? initialUrl;
+
+  const BottleNoteWebView({super.key, this.onLoaded, this.initialUrl});
 
   @override
   State<BottleNoteWebView> createState() => BottleNoteWebViewState();
@@ -113,7 +115,9 @@ class BottleNoteWebViewState extends State<BottleNoteWebView>
     final content = Stack(
           children: [
             InAppWebView(
-              initialUrlRequest: URLRequest(url: WebUri(Env.webViewUrl)),
+              initialUrlRequest: URLRequest(
+                url: WebUri(widget.initialUrl ?? Env.webViewUrl),
+              ),
               initialSettings: InAppWebViewSettings(
                 javaScriptEnabled: true,
                 useShouldOverrideUrlLoading: true,

pubspec.lock

@@ -1017,7 +1017,7 @@ packages:
     source: hosted
     version: "4.1.0"
   shared_preferences:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: shared_preferences
       sha256: "846849e3e9b68f3ef4b60c60cf4b3e02e9321bc7f4d8c4692cf87ffa82fc8a3a"

pubspec.yaml

@@ -25,6 +25,7 @@ dependencies:
   flutter_svg: ^2.0.10+1
   svg_path_parser: ^1.1.2
   flutter_native_splash: ^2.4.6
+  shared_preferences: ^2.5.2
 
 dev_dependencies:
   flutter_test: