fix: 多层播放页快速返回首页致后台播放、通知未消失

lib/services/audio_handler.dart

@@ -1,4 +1,6 @@
+import 'package:PiliPalaX/models/danmaku/dm.pb.dart';
 import 'package:audio_service/audio_service.dart';
+import 'package:flutter/cupertino.dart';
 import 'package:hive/hive.dart';
 import 'package:PiliPalaX/models/bangumi/info.dart';
 import 'package:PiliPalaX/models/video_detail_res.dart';
@@ -26,7 +28,7 @@ class VideoPlayerServiceHandler extends BaseAudioHandler with SeekHandler {
   static final List<MediaItem> _item = [];
   Box setting = GStrorage.setting;
   bool enableBackgroundPlay = true;
-  PlPlayerController player = PlPlayerController.getInstance();
+  // PlPlayerController player = PlPlayerController.getInstance();
 
   VideoPlayerServiceHandler() {
     revalidateSetting();
@@ -39,12 +41,14 @@ class VideoPlayerServiceHandler extends BaseAudioHandler with SeekHandler {
 
   @override
   Future<void> play() async {
-    player.play();
+    await PlPlayerController.playIfExists();
+    // player.play();
   }
 
   @override
   Future<void> pause() async {
-    player.pause();
+    await PlPlayerController.pauseIfExists();
+    // player.pause();
   }
 
   @override
@@ -52,12 +56,17 @@ class VideoPlayerServiceHandler extends BaseAudioHandler with SeekHandler {
     playbackState.add(playbackState.value.copyWith(
       updatePosition: position,
     ));
-    await player.seekTo(position);
+    await PlPlayerController.seekToIfExists(position);
+    // await player.seekTo(position);
   }
 
   Future<void> setMediaItem(MediaItem newMediaItem) async {
     if (!enableBackgroundPlay) return;
-    mediaItem.add(newMediaItem);
+    // print("此时调用栈为：");
+    // print(newMediaItem);
+    // print(newMediaItem.title);
+    // debugPrint(StackTrace.current.toString());
+    if(!mediaItem.isClosed) mediaItem.add(newMediaItem);
   }
 
   Future<void> setPlaybackState(PlayerStatus status, bool isBuffering) async {
@@ -99,9 +108,11 @@ class VideoPlayerServiceHandler extends BaseAudioHandler with SeekHandler {
 
   onVideoDetailChange(dynamic data, int cid) {
     if (!enableBackgroundPlay) return;
-
+    // print('当前调用栈为：');
+    // print(StackTrace.current);
+    if (!PlPlayerController.instanceExists()) return;
     if (data == null) return;
-    if (Get.arguments == null) return;
+    if (Get.arguments == null || Get.arguments['heroTag'] == null) return;
     final heroTag = Get.arguments['heroTag'];
 
     late MediaItem? mediaItem;
@@ -137,6 +148,8 @@ class VideoPlayerServiceHandler extends BaseAudioHandler with SeekHandler {
       );
     }
     if (mediaItem == null) return;
+    print("exist: ${PlPlayerController.instanceExists()}");
+    if (!PlPlayerController.instanceExists()) return;
     setMediaItem(mediaItem);
     _item.add(mediaItem);
   }
@@ -153,10 +166,8 @@ class VideoPlayerServiceHandler extends BaseAudioHandler with SeekHandler {
     }
     if (_item.isNotEmpty) {
       setMediaItem(_item.last);
-    }
-    if (_item.isEmpty) {
-      playbackState
-          .add(playbackState.value.copyWith(updatePosition: Duration.zero));
+    } else {
+      mediaItem?.close();
     }
     stop();
   }