Some tracks with no meta data for track number come up as 0

[shorttermproject]

If the track number is 0, I use the row index. I thing Apple does it too.

• (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
  {
  static NSString *CellIdentifier = @"AlbumTrackCell";
  JGAlbumTrackTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
  if (cell == nil) {
  [[NSBundle mainBundle] loadNibNamed:@"JGAlbumTrackTableViewCell" owner:self options:nil];
  cell = self.albumTrackTableViewCell;
  self.albumTrackTableViewCell = nil;
  }

  MPMediaItem *mediaItem = [[[self albumCollection] items] objectAtIndex:indexPath.row];
  NSNumber * trackNumber = [mediaItem trackNumber];
  if(!trackNumber || ![trackNumber intValue])
  trackNumber = [NSNumber numberWithInt:indexPath.row+1];
  cell.trackNumberLabel.text = [NSString stringWithFormat:@"%d",[trackNumber intValue]];
  cell.trackNameLabel.text = [mediaItem title];
  cell.trackLengthLabel.text = [mediaItem trackLengthString];

  //make odd rows gray
  cell.backgroundView.backgroundColor = indexPath.row % 2 != 0 ? kGrayBackgroundColor : [UIColor whiteColor];

  return cell;
  }