feat: add user location display and improve route display

lib/screens/history_screen.dart

@@ -221,28 +221,43 @@ class HistoryScreenState extends State<HistoryScreen> {
       if (mounted) {
         if (_isAtTop) {
           setState(() {
-            bool isMerge = false;
+            List<TrainRecord> allRecords = [];
-            Object? mergeResult;
+            Set<String> selectedRecordIds = {};
-            if (_displayItems.isNotEmpty) {
+
-              final firstItem = _displayItems.first;
+            for (final item in _displayItems) {
-              List<TrainRecord> tempRecords = [newRecord];
+              if (item is MergedTrainRecord) {
-              if (firstItem is MergedTrainRecord) {
+                allRecords.addAll(item.records);
-                tempRecords.addAll(firstItem.records);
+                if (_selectedRecords.contains(item.records.first.uniqueId)) {
-              } else if (firstItem is TrainRecord) {
+                  selectedRecordIds.addAll(item.records.map((r) => r.uniqueId));
-                tempRecords.add(firstItem);
+                }
-              }
+              } else if (item is TrainRecord) {
-              final mergeCheckResult =
+                allRecords.add(item);
-                  MergeService.getMixedList(tempRecords, _mergeSettings);
+                if (_selectedRecords.contains(item.uniqueId)) {
-              if (mergeCheckResult.length == 1 &&
+                  selectedRecordIds.add(item.uniqueId);
-                  mergeCheckResult.first is MergedTrainRecord) {
+                }
-                isMerge = true;
-                mergeResult = mergeCheckResult.first;
               }
             }
-            if (isMerge) {
+
-              _displayItems[0] = mergeResult!;
+            allRecords.insert(0, newRecord);
-            } else {
+
-              _displayItems.insert(0, newRecord);
+            final mergedItems =
+                MergeService.getMixedList(allRecords, _mergeSettings);
+
+            _displayItems.clear();
+            _displayItems.addAll(mergedItems);
+
+            _selectedRecords.clear();
+            for (final item in _displayItems) {
+              if (item is MergedTrainRecord) {
+                if (item.records
+                    .any((r) => selectedRecordIds.contains(r.uniqueId))) {
+                  _selectedRecords.addAll(item.records.map((r) => r.uniqueId));
+                }
+              } else if (item is TrainRecord) {
+                if (selectedRecordIds.contains(item.uniqueId)) {
+                  _selectedRecords.add(item.uniqueId);
+                }
+              }
             }
           });
           if (_scrollController.hasClients) {
@@ -723,8 +738,6 @@ class HistoryScreenState extends State<HistoryScreen> {
   Widget _buildRecordCard(TrainRecord record,
       {bool isSubCard = false, Key? key}) {
     final isSelected = _selectedRecords.contains(record.uniqueId);
-    final isExpanded =
-        !isSubCard && (_expandedStates[record.uniqueId] ?? false);
 
     return Card(
         key: key,
@@ -752,6 +765,11 @@ class HistoryScreenState extends State<HistoryScreen> {
                   }
                   widget.onSelectionChanged();
                 });
+              } else {
+                setState(() {
+                  _expandedStates[record.uniqueId] =
+                      !(_expandedStates[record.uniqueId] ?? false);
+                });
               }
             },
             onLongPress: () {
@@ -771,7 +789,8 @@ class HistoryScreenState extends State<HistoryScreen> {
                       _buildRecordHeader(record),
                       _buildPositionAndSpeed(record),
                       _buildLocoInfo(record),
-                      if (isExpanded) _buildExpandedContent(record),
+                      if (_expandedStates[record.uniqueId] ?? false)
+                        _buildExpandedContent(record),
                     ]))));
   }
 
@@ -803,6 +822,7 @@ class HistoryScreenState extends State<HistoryScreen> {
     final hasLocoInfo =
         formattedLocoInfo.isNotEmpty && formattedLocoInfo != "<NUL>";
     final shouldShowTrainRow = hasTrainNumber || hasDirection || hasLocoInfo;
+    final hasPosition = _parsePosition(record.positionInfo) != null;
 
     return Column(crossAxisAlignment: CrossAxisAlignment.start, children: [
       Row(mainAxisAlignment: MainAxisAlignment.spaceBetween, children: [
@@ -856,7 +876,8 @@ class HistoryScreenState extends State<HistoryScreen> {
                   ])),
               if (hasLocoInfo)
                 Text(formattedLocoInfo,
-                    style: const TextStyle(fontSize: 14, color: Colors.white70))
+                    style:
+                        const TextStyle(fontSize: 14, color: Colors.white70)),
             ]),
         const SizedBox(height: 2)
       ]

lib/screens/map_screen.dart

@@ -51,7 +51,10 @@ class _MapScreenState extends State<MapScreen> {
     _loadSettings().then((_) {
       _loadTrainRecords().then((_) {
         _startLocationUpdates();
-        if (!_isMapInitialized && (_currentLocation != null || _lastTrainLocation != null || _userLocation != null)) {
+        if (!_isMapInitialized &&
+            (_currentLocation != null ||
+                _lastTrainLocation != null ||
+                _userLocation != null)) {
           _initializeMapPosition();
         }
       });
@@ -418,8 +421,6 @@ class _MapScreenState extends State<MapScreen> {
                         fontSize: 8,
                         fontWeight: FontWeight.bold,
                       ),
-                      overflow: TextOverflow.ellipsis,
-                      maxLines: 1,
                     ),
                   ),
                 ],
@@ -746,8 +747,8 @@ class _MapScreenState extends State<MapScreen> {
     }
 
     final bool isDefaultLocation = _currentLocation == null &&
-                                   _lastTrainLocation == null && 
+        _lastTrainLocation == null &&
-                                   _userLocation == null;
+        _userLocation == null;
 
     return Scaffold(
       backgroundColor: const Color(0xFF121212),
@@ -759,7 +760,8 @@ class _MapScreenState extends State<MapScreen> {
                 mainAxisAlignment: MainAxisAlignment.center,
                 children: [
                   CircularProgressIndicator(
-                    valueColor: AlwaysStoppedAnimation<Color>(Color(0xFF007ACC)),
+                    valueColor:
+                        AlwaysStoppedAnimation<Color>(Color(0xFF007ACC)),
                   ),
                   SizedBox(height: 16),
                   Text(
@@ -769,44 +771,45 @@ class _MapScreenState extends State<MapScreen> {
                 ],
               ),
             )
-          else FlutterMap(
+          else
-            mapController: _mapController,
+            FlutterMap(
-            options: MapOptions(
+              mapController: _mapController,
-              initialCenter: _currentLocation ??
+              options: MapOptions(
-                  _lastTrainLocation ??
+                initialCenter: _currentLocation ??
-                  _userLocation ??
+                    _lastTrainLocation ??
-                  const LatLng(39.9042, 116.4074),
+                    _userLocation ??
-              initialZoom: _currentZoom,
+                    const LatLng(39.9042, 116.4074),
-              initialRotation: _currentRotation,
+                initialZoom: _currentZoom,
-              minZoom: 8.0,
+                initialRotation: _currentRotation,
-              maxZoom: 18.0,
+                minZoom: 2.0,
-              onPositionChanged: (MapCamera camera, bool hasGesture) {
+                maxZoom: 18.0,
-                setState(() {
+                onPositionChanged: (MapCamera camera, bool hasGesture) {
-                  _currentLocation = camera.center;
+                  setState(() {
-                  _currentZoom = camera.zoom;
+                    _currentLocation = camera.center;
-                  _currentRotation = camera.rotation;
+                    _currentZoom = camera.zoom;
-                });
+                    _currentRotation = camera.rotation;
+                  });
 
-                _saveSettings();
+                  _saveSettings();
-              },
+                },
-            ),
-            children: [
-              TileLayer(
-                urlTemplate: 'https://tile.openstreetmap.org/{z}/{x}/{y}.png',
-                userAgentPackageName: 'org.noxylva.lbjconsole',
               ),
-              if (_railwayLayerVisible)
+              children: [
                 TileLayer(
-                  urlTemplate:
+                  urlTemplate: 'https://tile.openstreetmap.org/{z}/{x}/{y}.png',
-                      'https://{s}.tiles.openrailwaymap.org/standard/{z}/{x}/{y}.png',
-                  subdomains: const ['a', 'b', 'c'],
                   userAgentPackageName: 'org.noxylva.lbjconsole',
                 ),
-              MarkerLayer(
+                if (_railwayLayerVisible)
-                markers: markers,
+                  TileLayer(
-              ),
+                    urlTemplate:
-            ],
+                        'https://{s}.tiles.openrailwaymap.org/standard/{z}/{x}/{y}.png',
-          ),
+                    subdomains: const ['a', 'b', 'c'],
+                    userAgentPackageName: 'org.noxylva.lbjconsole.flutter',
+                  ),
+                MarkerLayer(
+                  markers: markers,
+                ),
+              ],
+            ),
           if (_isLoading)
             const Center(
               child: CircularProgressIndicator(

lib/screens/realtime_screen.dart

@@ -2,6 +2,7 @@ import 'dart:async';
 import 'package:flutter/material.dart';
 import 'package:flutter_map/flutter_map.dart';
 import 'package:latlong2/latlong.dart';
+import 'package:geolocator/geolocator.dart';
 import '../models/merged_record.dart';
 import '../services/database_service.dart';
 import '../models/train_record.dart';
@@ -30,6 +31,10 @@ class RealtimeScreenState extends State<RealtimeScreen> {
   List<Marker> _mapMarkers = [];
   bool _showMap = true;
   Set<String> _selectedGroupKeys = {};
+  LatLng? _userLocation;
+  bool _isLocationPermissionGranted = false;
+  Timer? _locationTimer;
+  StreamSubscription<Position>? _positionStreamSubscription;
 
   List<Object> getDisplayItems() => _displayItems;
 
@@ -85,6 +90,28 @@ class RealtimeScreenState extends State<RealtimeScreen> {
           .where((marker) => marker != null)
           .cast<Marker>()
           .toList();
+
+      if (_userLocation != null) {
+        _mapMarkers.add(
+          Marker(
+            point: _userLocation!,
+            width: 24,
+            height: 24,
+            child: Container(
+              decoration: BoxDecoration(
+                color: Colors.blue,
+                borderRadius: BorderRadius.circular(12),
+                border: Border.all(color: Colors.white, width: 1),
+              ),
+              child: const Icon(
+                Icons.my_location,
+                color: Colors.white,
+                size: 12,
+              ),
+            ),
+          ),
+        );
+      }
     });
   }
 
@@ -142,7 +169,6 @@ class RealtimeScreenState extends State<RealtimeScreen> {
         }
       } catch (e) {
         _selectedGroupKeys.remove(groupKey);
-        print('记录不存在，移除选中状态: $groupKey');
       }
     }
 
@@ -167,19 +193,29 @@ class RealtimeScreenState extends State<RealtimeScreen> {
                 markers: [
                   Marker(
                     point: position,
-                    width: 60,
+                    width: 80,
-                    height: 20,
+                    height: 16,
-                    child: Container(
+                    child: Column(
-                      color: Colors.black,
+                      mainAxisSize: MainAxisSize.min,
-                      alignment: Alignment.center,
+                      mainAxisAlignment: MainAxisAlignment.center,
-                      child: Text(
+                      children: [
-                        _getTrainDisplayName(singleRecord),
+                        Container(
-                        style: const TextStyle(
+                          padding: const EdgeInsets.symmetric(
-                          color: Colors.white,
+                              horizontal: 6, vertical: 2),
-                          fontSize: 10,
+                          decoration: BoxDecoration(
-                          fontWeight: FontWeight.bold,
+                            color: Colors.black.withOpacity(0.8),
+                            borderRadius: BorderRadius.circular(3),
+                          ),
+                          child: Text(
+                            _getTrainDisplayName(singleRecord),
+                            style: const TextStyle(
+                              color: Colors.white,
+                              fontSize: 8,
+                              fontWeight: FontWeight.bold,
+                            ),
+                          ),
                         ),
-                      ),
+                      ],
                     ),
                   ),
                 ],
@@ -205,19 +241,29 @@ class RealtimeScreenState extends State<RealtimeScreen> {
                 markers: [
                   Marker(
                     point: routePoints.last,
-                    width: 60,
+                    width: 80,
-                    height: 20,
+                    height: 16,
-                    child: Container(
+                    child: Column(
-                      color: Colors.black,
+                      mainAxisSize: MainAxisSize.min,
-                      alignment: Alignment.center,
+                      mainAxisAlignment: MainAxisAlignment.center,
-                      child: Text(
+                      children: [
-                        _getTrainDisplayName(mergedRecord.latestRecord),
+                        Container(
-                        style: const TextStyle(
+                          padding: const EdgeInsets.symmetric(
-                          color: Colors.white,
+                              horizontal: 6, vertical: 2),
-                          fontSize: 10,
+                          decoration: BoxDecoration(
-                          fontWeight: FontWeight.bold,
+                            color: Colors.black.withOpacity(0.8),
+                            borderRadius: BorderRadius.circular(3),
+                          ),
+                          child: Text(
+                            _getTrainDisplayName(mergedRecord.latestRecord),
+                            style: const TextStyle(
+                              color: Colors.white,
+                              fontSize: 8,
+                              fontWeight: FontWeight.bold,
+                            ),
+                          ),
                         ),
-                      ),
+                      ],
                     ),
                   ),
                 ],
@@ -227,7 +273,6 @@ class RealtimeScreenState extends State<RealtimeScreen> {
         }
       } catch (e) {
         _selectedGroupKeys.remove(groupKey);
-        print('记录不存在，移除选中状态: $groupKey');
       }
     }
 
@@ -275,7 +320,6 @@ class RealtimeScreenState extends State<RealtimeScreen> {
         }
       } catch (e) {
         _selectedGroupKeys.remove(groupKey);
-        print('记录不存在，移除选中状态: $groupKey');
       }
     }
 
@@ -460,25 +504,19 @@ class RealtimeScreenState extends State<RealtimeScreen> {
   void initState() {
     super.initState();
     _scrollController.addListener(() {
-      print(
-          '滚动监听器触发 - 当前位置: ${_scrollController.position.pixels}, maxScrollExtent: ${_scrollController.position.maxScrollExtent}, isAtTop: $_isAtTop');
-
       if (_scrollController.position.atEdge) {
         if (_scrollController.position.pixels ==
             _scrollController.position.maxScrollExtent) {
-          print('到达底部（反转后的"顶部"）- 设置 _isAtTop = true');
           if (!_isAtTop) {
             setState(() => _isAtTop = true);
           }
         } else if (_scrollController.position.pixels == 0) {
-          print('到达顶部（反转后的"底部"）- 设置 _isAtTop = false');
           if (_isAtTop) {
             setState(() => _isAtTop = false);
           }
         }
       } else {
         if (_isAtTop) {
-          print('离开底部（反转后的"顶部"）- 设置 _isAtTop = false');
           setState(() => _isAtTop = false);
         }
       }
@@ -494,6 +532,7 @@ class RealtimeScreenState extends State<RealtimeScreen> {
     });
     _setupRecordDeleteListener();
     _setupSettingsListener();
+    _startLocationUpdates();
   }
 
   void _scheduleInitialScroll() {
@@ -501,16 +540,12 @@ class RealtimeScreenState extends State<RealtimeScreen> {
       if (mounted && _scrollController.hasClients && _displayItems.isNotEmpty) {
         try {
           final maxScrollExtent = _scrollController.position.maxScrollExtent;
-          print('初始滚动执行：maxScrollExtent=$maxScrollExtent');
           _scrollController.jumpTo(maxScrollExtent);
-          print('初始滚动完成：位置=${_scrollController.position.pixels}');
 
           if (!_isAtTop) {
             setState(() => _isAtTop = true);
           }
-        } catch (e) {
+        } catch (e) {}
-          print('初始滚动错误：$e');
-        }
       }
     });
   }
@@ -520,6 +555,8 @@ class RealtimeScreenState extends State<RealtimeScreen> {
     _scrollController.dispose();
     _recordDeleteSubscription?.cancel();
     _settingsSubscription?.cancel();
+    _locationTimer?.cancel();
+    _positionStreamSubscription?.cancel();
     super.dispose();
   }
 
@@ -541,6 +578,70 @@ class RealtimeScreenState extends State<RealtimeScreen> {
     });
   }
 
+  Future<void> _requestLocationPermission() async {
+    bool serviceEnabled = await Geolocator.isLocationServiceEnabled();
+    if (!serviceEnabled) {
+      return;
+    }
+
+    LocationPermission permission = await Geolocator.checkPermission();
+    if (permission == LocationPermission.denied) {
+      permission = await Geolocator.requestPermission();
+    }
+
+    if (permission == LocationPermission.deniedForever) {
+      return;
+    }
+
+    setState(() {
+      _isLocationPermissionGranted = true;
+    });
+
+    _getCurrentLocation();
+    _startRealtimeLocationUpdates();
+  }
+
+  Future<void> _getCurrentLocation() async {
+    try {
+      Position position = await Geolocator.getCurrentPosition(
+        desiredAccuracy: LocationAccuracy.high,
+        forceAndroidLocationManager: true,
+      );
+
+      final newLocation = LatLng(position.latitude, position.longitude);
+      setState(() {
+        _userLocation = newLocation;
+      });
+
+      _updateAllRecordMarkers();
+    } catch (e) {}
+  }
+
+  void _startLocationUpdates() {
+    _requestLocationPermission();
+  }
+
+  void _startRealtimeLocationUpdates() {
+    _positionStreamSubscription?.cancel();
+
+    _positionStreamSubscription = Geolocator.getPositionStream(
+      locationSettings: const LocationSettings(
+        accuracy: LocationAccuracy.high,
+        distanceFilter: 1,
+        timeLimit: Duration(seconds: 30),
+      ),
+    ).listen(
+      (Position position) {
+        final newLocation = LatLng(position.latitude, position.longitude);
+        setState(() {
+          _userLocation = newLocation;
+        });
+        _updateAllRecordMarkers();
+      },
+      onError: (error) {},
+    );
+  }
+
   Future<void> loadRecords({bool scrollToTop = true}) async {
     try {
       if (mounted) {
@@ -675,13 +776,8 @@ class RealtimeScreenState extends State<RealtimeScreen> {
             try {
               final maxScrollExtent =
                   _scrollController.position.maxScrollExtent;
-              print('loadRecords - 滚动到底部, maxScrollExtent: $maxScrollExtent');
               _scrollController.jumpTo(maxScrollExtent);
-              print(
+            } catch (e) {}
-                  'loadRecords - 滚动完成，新位置: ${_scrollController.position.pixels}');
-            } catch (e) {
-              print('loadRecords - 滚动错误: $e');
-            }
           }
         } else {
           if (_isLoading) {
@@ -697,11 +793,9 @@ class RealtimeScreenState extends State<RealtimeScreen> {
   }
 
   Future<void> addNewRecord(TrainRecord newRecord) async {
-    print('addNewRecord - 开始添加新记录, 当前_isAtTop=$_isAtTop');
     try {
       final position = _parsePositionFromRecord(newRecord);
       if (position == null) {
-        print('addNewRecord - 记录没有位置信息，忽略');
         return;
       }
 
@@ -721,41 +815,44 @@ class RealtimeScreenState extends State<RealtimeScreen> {
       if (!isNewRecord) return;
 
       if (mounted) {
-        setState(() {
+        List<TrainRecord> allRecords = [];
-          bool isMerge = false;
+        Set<String> selectedRecordIds = {};
-          Object? mergeResult;
-          String? oldSingleRecordKey;
 
-          if (_displayItems.isNotEmpty) {
+        for (final item in _displayItems) {
-            final firstItem = _displayItems.first;
+          if (item is MergedTrainRecord) {
-            List<TrainRecord> tempRecords = [newRecord];
+            allRecords.addAll(item.records);
-            if (firstItem is MergedTrainRecord) {
+            if (_selectedGroupKeys.contains(item.groupKey)) {
-              tempRecords.addAll(firstItem.records);
+              selectedRecordIds.addAll(item.records.map((r) => r.uniqueId));
-            } else if (firstItem is TrainRecord) {
-              tempRecords.add(firstItem);
-
-              oldSingleRecordKey = "single:${firstItem.uniqueId}";
             }
-            final mergeCheckResult =
+          } else if (item is TrainRecord) {
-                MergeService.getMixedList(tempRecords, _mergeSettings);
+            allRecords.add(item);
-            if (mergeCheckResult.length == 1 &&
+            if (_selectedGroupKeys.contains("single:${item.uniqueId}")) {
-                mergeCheckResult.first is MergedTrainRecord) {
+              selectedRecordIds.add(item.uniqueId);
-              isMerge = true;
-              mergeResult = mergeCheckResult.first;
             }
           }
+        }
 
-          if (isMerge) {
+        allRecords.insert(0, newRecord);
-            final mergedRecord = mergeResult as MergedTrainRecord;
-            _displayItems[0] = mergedRecord;
 
-            if (oldSingleRecordKey != null &&
+        final mergedItems =
-                _selectedGroupKeys.contains(oldSingleRecordKey)) {
+            MergeService.getMixedList(allRecords, _mergeSettings);
-              _selectedGroupKeys.remove(oldSingleRecordKey);
+
-              _selectedGroupKeys.add(mergedRecord.groupKey);
+        setState(() {
+          _displayItems.clear();
+          _displayItems.addAll(mergedItems);
+
+          _selectedGroupKeys.clear();
+          for (final item in _displayItems) {
+            if (item is MergedTrainRecord) {
+              if (item.records
+                  .any((r) => selectedRecordIds.contains(r.uniqueId))) {
+                _selectedGroupKeys.add(item.groupKey);
+              }
+            } else if (item is TrainRecord) {
+              if (selectedRecordIds.contains(item.uniqueId)) {
+                _selectedGroupKeys.add("single:${item.uniqueId}");
+              }
             }
-          } else {
-            _displayItems.insert(0, newRecord);
           }
         });
 
@@ -765,23 +862,16 @@ class RealtimeScreenState extends State<RealtimeScreen> {
           _adjustMapViewToSelectedGroups();
         }
 
-        print(
-            'addNewRecord - 检查滚动条件: _isAtTop=$_isAtTop, hasClients=${_scrollController.hasClients}, 当前位置: ${_scrollController.position.pixels}');
         if (_isAtTop && _scrollController.hasClients) {
           WidgetsBinding.instance.addPostFrameCallback((_) {
             if (mounted && _scrollController.hasClients) {
               final newMaxScrollExtent =
                   _scrollController.position.maxScrollExtent;
-              print(
+
-                  'addNewRecord - 执行滚动到底部, maxScrollExtent: $newMaxScrollExtent');
               _scrollController.jumpTo(newMaxScrollExtent);
-              print(
-                  'addNewRecord - 滚动完成，新位置: ${_scrollController.position.pixels}');
             }
           });
-        } else {
+        } else {}
-          print('addNewRecord - 不执行滚动，条件不满足');
-        }
       }
     } catch (e) {}
   }
@@ -1193,13 +1283,23 @@ class RealtimeScreenState extends State<RealtimeScreen> {
     }
 
     final latestRoute = getValidRoute(latestRecord);
-    final previousRoute =
-        previousRecord != null ? getValidRoute(previousRecord) : "";
 
-    final bool needsSpecialDisplay = previousRecord != null &&
+    String displayRoute = latestRoute;
-        latestRoute.isNotEmpty &&
+    bool isDisplayingLatestNormal = true;
-        previousRoute.isNotEmpty &&
+
-        latestRoute != previousRoute;
+    if (latestRoute.isEmpty || latestRoute.contains('*')) {
+      for (final record in mergedRecord.records) {
+        final route = getValidRoute(record);
+        if (route.isNotEmpty && !route.contains('*')) {
+          displayRoute = route;
+          isDisplayingLatestNormal = (record == latestRecord);
+          break;
+        }
+      }
+    }
+
+    final bool needsSpecialDisplay = !isDisplayingLatestNormal ||
+        (latestRoute.contains('*') && displayRoute != latestRoute);
 
     final position = latestRecord.position.trim();
     final speed = latestRecord.speed.trim();
@@ -1227,10 +1327,10 @@ class RealtimeScreenState extends State<RealtimeScreen> {
                 child: Row(
               crossAxisAlignment: CrossAxisAlignment.center,
               children: [
-                if (latestRoute.isNotEmpty) ...[
+                if (displayRoute.isNotEmpty) ...[
                   if (needsSpecialDisplay) ...[
                     Flexible(
-                        child: Text(previousRoute,
+                        child: Text(displayRoute,
                             style: const TextStyle(
                               fontSize: 16,
                               color: Colors.white,
@@ -1245,18 +1345,25 @@ class RealtimeScreenState extends State<RealtimeScreen> {
                           context: context,
                           builder: (context) => AlertDialog(
                             backgroundColor: const Color(0xFF1E1E1E),
-                            title: const Text("路线变化",
+                            title: const Text("路线信息",
                                 style: TextStyle(color: Colors.white)),
                             content: Column(
                               mainAxisSize: MainAxisSize.min,
                               crossAxisAlignment: CrossAxisAlignment.start,
                               children: [
-                                Text("上一条: $previousRoute",
+                                if (!isDisplayingLatestNormal) ...[
-                                    style: const TextStyle(color: Colors.grey)),
+                                  Text("显示路线: $displayRoute",
-                                const SizedBox(height: 8),
+                                      style:
-                                Text("当前: $latestRoute",
+                                          const TextStyle(color: Colors.white)),
-                                    style:
+                                  const SizedBox(height: 8),
-                                        const TextStyle(color: Colors.white)),
+                                ],
+                                Text(
+                                    "最新路线: ${latestRoute.isNotEmpty ? latestRoute : '无效路线'}",
+                                    style: TextStyle(
+                                      color: latestRoute.isNotEmpty
+                                          ? Colors.grey
+                                          : Colors.red,
+                                    )),
                               ],
                             ),
                             actions: [
@@ -1285,7 +1392,7 @@ class RealtimeScreenState extends State<RealtimeScreen> {
                     const SizedBox(width: 4),
                   ] else
                     Flexible(
-                        child: Text(latestRoute,
+                        child: Text(displayRoute,
                             style: const TextStyle(
                                 fontSize: 16, color: Colors.white),
                             overflow: TextOverflow.ellipsis)),

pubspec.yaml

@@ -16,7 +16,7 @@ publish_to: "none" # Remove this line if you wish to publish to pub.dev
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
 # In Windows, build-name is used as the major, minor, and patch parts
 # of the product and file versions while build-number is used as the build suffix.
-version: 0.6.0-flutter+60
+version: 0.7.0-flutter+70
 
 environment:
   sdk: ^3.5.4