从c＃xaml中获取mp3文件的缩略图，用于windows phone 8.1

Question

我需要从mp3文件中获取缩略图。我实现了这一点，但它从来没有捕捉到缩略图。我检查了使用Windows Media Player和xbox音乐（在电话上）打开它们的图像的存在，但我无法在我的应用程序中检索它们。请帮助

async private void ThumbnailFetcher(StorageFile file) 
    { 

     if (file != null) 
     { 
      const ThumbnailMode thumbnailMode = ThumbnailMode.MusicView; 
      const uint size = 100; 



      using (StorageItemThumbnail thumbnail = await file.GetThumbnailAsync(thumbnailMode, size)) 
      { 

       if (thumbnail != null && thumbnail.Type == ThumbnailType.Image) 
       { 
        this.Dispatcher.RunAsync(CoreDispatcherPriority.Normal,() => 
        { 
         BitmapImage thumbnailImage = new BitmapImage();//image used for display 
         thumbnailImage.SetSource(thumbnail); 
         CurrentAlbumArt.Source = thumbnailImage; 


         Debug.WriteLine("true"); 
        }); 

       } 
       else 
       { 
        Debug.WriteLine("False"); 
       } 
      } 
     } 

    } 

P.s它总是假。

似乎有在Windows Phone 8.1中的错误，我找遍了所有的夜晚，我可以实现的唯一方法是这样的

var fileStream = await file.OpenStreamForReadAsync(); 

     var TagFile = File.Create(new StreamFileAbstraction(file.Name, fileStream, fileStream)); 
     // Load you image data in MemoryStream 
     var tags = TagFile.GetTag(TagTypes.Id3v2); 


     IPicture pic = TagFile.Tag.Pictures[0]; 
     MemoryStream ms = new MemoryStream(pic.Data.Data); 
     ms.Seek(0, SeekOrigin.Begin); 


      bitmap.SetSource(ms.AsRandomAccessStream()); 
      AlbumArt.Source = bitmap; 

，但它并没有太多工作..

Answer 1

var filestream = await receivedFile.OpenStreamForReadAsync(); 
      var tagFile = File.Create(new StreamFileAbstraction(receivedFile.Name, filestream, filestream)); 
      var tags = tagFile.GetTag(TagLib.TagTypes.Id3v2); 
      var bin = (byte[])(tags.Pictures[0].Data.Data); 
      MemoryStream ms = new MemoryStream(bin); 
      await bitmapImage.SetSourceAsync(ms.AsRandomAccessStream()); 
AlbumArt.Source=bitmapImage; 

使用此和taglib便携式。 （对不起，花了这么多时间）