readme

Artists/Scripts/Factory/PlaybackService.cs

@@ -20,7 +20,7 @@ public partial class PlaybackService : UXPanel
     [Export] private PackedScene template;
     [Export] private PackedScene labelTemplate;
     [Export] private DataPlayer dataPlayer;
-
+    private CancellationTokenSource cancellationTokenSource;
     public PlaybackService()
     {
         BITApp.ServiceCollection.AddSingleton(this);
@@ -28,11 +28,17 @@ public partial class PlaybackService : UXPanel
 
     public override void _Ready()
     {
+        cancellationTokenSource = new CancellationTokenSource();
         OnExit();
     }
-
+    public override void _ExitTree()
+    {
+        cancellationTokenSource.Cancel();
+    }
     public override void OnEntry()
     {
+        cancellationTokenSource.Token.ThrowIfCancellationRequested();
+        
         var files =
             new DirectoryInfo(PathHelper.GetFolderPath("Demos", GetTree().CurrentScene.Name))
                 .GetFiles()
@@ -62,8 +68,18 @@ public partial class PlaybackService : UXPanel
                 await UniTask.SwitchToTaskPool();
                 
                 var array = BITAssets.Read<string[]>(x.FullName, "base64");
+
+                try
+                {
+                    await UniTask.SwitchToSynchronizationContext(BITApp.SynchronizationContext,
+                        cancellationTokenSource.Token);
+                }
+                catch (OperationCanceledException)
+                {
+                    stopwatch.Stop();
+                    return;
+                }
                 
-                await UniTask.SwitchToSynchronizationContext(BITApp.SynchronizationContext);
                 stopwatch.Stop();
                 
                 BIT4Log.Log<PlaybackService>($"已加载:{playableInfo.Name},耗时:{stopwatch.ElapsedMilliseconds}ms");