private async void MediaPlaybackList_CurrentItemChanged(MediaPlaybackList sender, CurrentMediaPlaybackItemChangedEventArgs args)
{
await UIDispatcher.RunAsync(CoreDispatcherPriority.High, () =>
{
var newItem = PlaybackList.Where(x => x.SourceObject == args.NewItem).FirstOrDefault();
var oldItem = PlaybackList.Where(x => x.SourceObject == args.OldItem).FirstOrDefault();
if (newItem != null)
{
newItem.State = "Playing";
PlayingItemChanged?.Invoke(null, newItem);
}
if (oldItem != null)
{
oldItem.State = string.Empty;
}
});
}
private void BuildMediaPlaybackList()
{
for (int i = 1; i < 5; i++)
{
string file = $"ms-appx:///Assets/mp3/0{i}.mp3";
MediaSource source = MediaSource.CreateFromUri(new Uri(file, UriKind.RelativeOrAbsolute));
MediaPlaybackItem item = new MediaPlaybackItem(source);
MediaItemDisplayProperties displayProperty = item.GetDisplayProperties();
displayProperty.Type = MediaPlaybackType.Music;
displayProperty.MusicProperties.Title = $"0{i}.mp3";
displayProperty.MusicProperties.AlbumArtist = "JJ";
displayProperty.Thumbnail = RandomAccessStreamReference.CreateFromUri(new Uri($"ms-appx:///Assets/mp3/0{i}.jpg", UriKind.RelativeOrAbsolute));
item.ApplyDisplayProperties(displayProperty);
PlaybackList.Add(new MediaPlaybackItemDataWrapper(item));
MediaPlaybackList.Items.Add(item);
}
}