private void SetImageCell(AlbumViewCell cell, MediaItem item, int row)
{
DispatchQueue.DefaultGlobalQueue.DispatchAsync(() =>
{
using (var image = UIImage.FromFile(item.Path))
{
var scaledImage = image.ScaleImage(_cellSize);
DispatchQueue.MainQueue.DispatchAsync(() =>
{
if (cell.Tag == row)
{
cell.Image = scaledImage;
}
});
}
});
}
private void SetVideoCell(AlbumViewCell cell, MediaItem item, int row)
{
DispatchQueue.DefaultGlobalQueue.DispatchAsync(() =>
{
using (var asset = AVAsset.FromUrl(new NSUrl(item.Path)))
using (var generator = AVAssetImageGenerator.FromAsset(asset))
{
generator.AppliesPreferredTrackTransform = true;
var duration = asset.Duration.Seconds;
var scaledImage = GetVideoThumbnail(generator, duration, _cellSize);
DispatchQueue.MainQueue.DispatchAsync(() =>
{
if (cell.Tag != row)
{
return;
}
cell.Duration = duration;
cell.Image = scaledImage;
});
}
});
}
private static void SetImageCellImage(AlbumViewCell cell, UIImage image)
{
cell.Image = image;
cell.Tag = 0;
}
