现阶段通知中心播放暂停切换功能已实现，但是上下一曲功能暂时消失，需要后续优化，这个commit是snapshot

2026-08-21 22:58:44 +08:00
parent 94a4906671
commit 89c4ba8191
5 changed files with 201 additions and 156 deletions
@@ -0,0 +1,72 @@
+// lib/audio/playback_state_manager.dart
+import 'package:audio_service/audio_service.dart' as audio_service;
+
+class PlaybackStateManager {
+  static final PlaybackStateManager _instance =
+      PlaybackStateManager._internal();
+  factory PlaybackStateManager() => _instance;
+  PlaybackStateManager._internal();
+
+  bool _playing = false;
+  bool get playing => _playing;
+
+  Duration _position = Duration.zero;
+  Duration get position => _position;
+
+  Duration _duration = Duration.zero;
+  Duration get duration => _duration;
+
+  // ⭐ 核心改动：使用 playPause 替代 play/pause 分离
+  audio_service.PlaybackState get playbackState {
+    // ⭐ 固定使用 playPause，不再动态切换
+    final playControl = audio_service.MediaControl(
+      androidIcon: _playing ? 'drawable/ic_pause' : 'drawable/ic_play',
+      label: _playing ? '暂停' : '播放',
+      action: audio_service.MediaAction.playPause, // 固定
+    );
+
+    final controls = [
+      audio_service.MediaControl(
+        androidIcon: 'drawable/ic_previous',
+        label: '上一曲',
+        action: audio_service.MediaAction.skipToPrevious,
+      ),
+      playControl,
+      audio_service.MediaControl(
+        androidIcon: 'drawable/ic_next',
+        label: '下一曲',
+        action: audio_service.MediaAction.skipToNext,
+      ),
+    ];
+
+    return audio_service.PlaybackState(
+      controls: controls,
+      processingState: audio_service.AudioProcessingState.ready,
+      playing: _playing, // ⭐ 这里才是真正的播放状态，通知栏会根据它显示正确的图标
+      androidCompactActionIndices: const [0, 1, 2],
+      updateTime: DateTime.now(),
+      //extras: {'_refresh': DateTime.now().millisecondsSinceEpoch},
+    );
+  }
+
+  // ---- 状态更新方法保持不变 ----
+  void updatePlaying(bool playing) {
+    if (_playing != playing) {
+      _playing = playing;
+    }
+  }
+
+  void updatePosition(Duration position) {
+    _position = position;
+  }
+
+  void updateDuration(Duration duration) {
+    _duration = duration;
+  }
+
+  void reset() {
+    _playing = false;
+    _position = Duration.zero;
+    _duration = Duration.zero;
+  }
+}
@@ -0,0 +1,33 @@
+// lib/audio/player_controller.dart
+import 'package:media_kit/media_kit.dart';
+import '../services/playback_service.dart'; // ⭐ 修正路径
+
+class PlayerController {
+  static final PlayerController _instance = PlayerController._internal();
+  factory PlayerController() => _instance;
+  PlayerController._internal();
+
+  final PlaybackService _playback = PlaybackService();
+
+  // ---- 状态流（只读） ----
+  Stream<bool> get playingStream => _playback.player.stream.playing;
+  Stream<Duration> get positionStream => _playback.player.stream.position;
+  Stream<Duration> get durationStream => _playback.player.stream.duration;
+  Stream<void> get completedStream => _playback.player.stream.completed;
+
+  // ---- 当前状态快照 ----
+  bool get isPlaying => _playback.player.state.playing;
+  Duration get position => _playback.player.state.position;
+  Duration get duration => _playback.player.state.duration;
+
+  // ---- 控制命令 ----
+  Future<void> play() => _playback.resume();
+  Future<void> pause() => _playback.pause();
+  Future<void> stop() => _playback.stop();
+  Future<void> seek(Duration position) => _playback.seek(position);
+
+  // ---- 加载歌曲 ----
+  void load(String url, {Map<String, String>? headers}) {
+    _playback.play(url, headers: headers);
+  }
+}