播放进度更新已达成，准备优化通知中心的进度条拖动点击

lib/services/audio_player_handler.dart

@@ -14,21 +14,30 @@ class AudioPlayerHandler extends audio_service.BaseAudioHandler {
   String? _currentTitle;
   String? _currentArtist;
 
+  // ⭐ 唯一的位置变量
+  Duration _currentPosition = Duration.zero;
+  DateTime _lastPublishTime = DateTime.now();
+  static const Duration _publishInterval = Duration(milliseconds: 500);
+
   AudioPlayerHandler() {
-    // ---- 播放状态 ----
     _player.playingStream.listen((playing) {
       _state.updatePlaying(playing);
       _publishState();
     });
 
-    // ---- 进度变化 ----
+    // ⭐ 位置更新：直接赋值给 _currentPosition
     _player.positionStream.listen((position) {
+      _currentPosition = position;
       _state.updatePosition(position);
-      // ⭐ 0.18.19 版本：通过更新 PlaybackState 的 updateTime 来驱动进度刷新
+
+      final now = DateTime.now();
+      if (now.difference(_lastPublishTime) >= _publishInterval) {
+        _lastPublishTime = now;
+        _updateMediaItemPosition(position);
         _publishStateOnly();
+      }
     });
 
-    // ---- 时长变化 ----
     _player.durationStream.listen((duration) {
       _state.updateDuration(duration);
       if (_currentId != null && _currentTitle != null) {
@@ -43,24 +52,51 @@ class AudioPlayerHandler extends audio_service.BaseAudioHandler {
     });
   }
 
-  // ---- 发布完整状态 ----
+  void _updateMediaItemPosition(Duration position) {
-  void _publishState() {
+    final currentMediaItem = mediaItem.value;
-    playbackState.add(_state.playbackState);
+    if (currentMediaItem != null) {
+      mediaItem.add(audio_service.MediaItem(
+        id: currentMediaItem.id,
+        title: currentMediaItem.title,
+        artist: currentMediaItem.artist,
+        duration: currentMediaItem.duration,
+        extras: {
+          'position': position.inMilliseconds,
+          ...?currentMediaItem.extras,
+        },
+      ));
+    }
   }
 
-  // ---- 0.18.19 版本：只更新时间戳，驱动系统刷新进度 ----
+  void _publishState() {
-  void _publishStateOnly() {
+    final state = _state.playbackState;
-    final current = playbackState.value;
     playbackState.add(audio_service.PlaybackState(
-      controls: current.controls,
+      controls: state.controls,
-      processingState: current.processingState,
+      processingState: state.processingState,
+      playing: state.playing,
+      androidCompactActionIndices: state.androidCompactActionIndices,
+      updateTime: DateTime.now(),
+    ));
+  }
+
+  void _publishStateOnly() {
+    final current = playbackState.value;
+    // ⭐ 使用类成员 _currentPosition，不再重复声明
+    debugPrint(
+        '📡 [publishStateOnly] position=$_currentPosition, playing=${current.playing}');
+
+    playbackState.add(audio_service.PlaybackState(
+      controls: current.controls.isNotEmpty
+          ? current.controls
+          : _state.playbackState.controls,
+      processingState: _state.playbackState.processingState,
       playing: current.playing,
       androidCompactActionIndices: current.androidCompactActionIndices,
-      updateTime: DateTime.now(), // ⭐ 关键：更新时间戳，系统会重新读取位置
+      updatePosition: _currentPosition, // ⭐ 尝试加上
+      updateTime: DateTime.now(),
     ));
   }
 
-  // ---- 更新媒体信息 ----
   void _updateMediaItem({
     required String id,
     required String title,
@@ -70,18 +106,22 @@ class AudioPlayerHandler extends audio_service.BaseAudioHandler {
     _currentId = id;
     _currentTitle = title;
     _currentArtist = artist;
+    final position = _player.position;
 
-    debugPrint('📢 [handler] updateMediaItem: $title - $artist');
+    debugPrint(
+        '📢 [handler] updateMediaItem: $title - $artist (position=${position.inSeconds}s)');
 
     mediaItem.add(audio_service.MediaItem(
       id: id,
       title: title,
       artist: artist,
       duration: duration ?? _player.duration,
+      extras: {
+        'position': position.inMilliseconds,
+      },
     ));
   }
 
-  // ---- 外部接口 ----
   void updateNotification({
     required String id,
     required String title,
@@ -91,7 +131,6 @@ class AudioPlayerHandler extends audio_service.BaseAudioHandler {
     _publishState();
   }
 
-  // ---- 控制命令 ----
   @override
   Future<void> play() async {
     debugPrint('▶️ [handler] play() called');
@@ -116,7 +155,9 @@ class AudioPlayerHandler extends audio_service.BaseAudioHandler {
   @override
   Future<void> seek(Duration position) async {
     debugPrint('⏩ [handler] seek() called: $position');
-    _player.seek(position);
+    await _player.seek(position);
+    _currentPosition = position;
+    _updateMediaItemPosition(position);
     _publishStateOnly();
   }
 
@@ -152,7 +193,6 @@ class AudioPlayerHandler extends audio_service.BaseAudioHandler {
         }
         break;
       default:
-        // 其他按钮 fallback
         if (_player.isPlaying) {
           await pause();
         } else {

pubspec.yaml

@@ -36,7 +36,7 @@ dependencies:
   provider: ^6.1.2
   dio: ^5.4.0         # HTTP 客户端
   xml: ^6.5.0
-  audio_service: 0.18.19
+  audio_service: ^0.18.19
   audio_session: ^0.1.21
   permission_handler: ^11.3.1
   flutter_cache_manager: ^3.3.1