Ich habe ein Array, das Video-URLs enthält. Ich möchte diese Videos auf UITableviewcell abspielen, wenn sie vollständig sichtbar sind.

Ich habe das versucht

- (void)scrollViewDidScroll:(UIScrollView *)aScrollView 
{
    NSArray* cells = homeTabl.visibleCells;

    for (HomeCell* cell in cells) 
    {
        if (cell.frame.origin.y > offset.y &&
        cell.frame.origin.y + cell.frame.size.height < offset.y + bounds.size.height)
        {
            NSIndexPath *path = [homeTabl indexPathForCell:cell] ;
            index = path.row;
            fullvisible = YES;
            [homeTabl reloadData];
        }
        else
        {
            fullvisible = NO;
        }
    }
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
     if (fullvisible) 
     {
          NSURL *url = [NSURL URLWithString:[[responsearray objectAtIndex:indexPath.row]valueForKey:@"feed_video"]];

          cell.videoItem = [AVPlayerItem playerItemWithURL:url];
          cell.videoPlayer = [AVPlayer playerWithPlayerItem:cell.videoItem];
          cell.avLayer = [AVPlayerLayer playerLayerWithPlayer:cell.videoPlayer];
          cell.videoPlayer.actionAtItemEnd = AVPlayerActionAtItemEndNone;
          [cell.videoItem addObserver:self forKeyPath:@"playbackBufferEmpty" options:NSKeyValueObservingOptionNew context:nil];
          [cell.videoItem addObserver:self forKeyPath:@"playbackLikelyToKeepUp" options:NSKeyValueObservingOptionNew context:nil];

          [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(itemDidBufferPlaying:) name:AVPlayerItemPlaybackStalledNotification object:nil];
          [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(itemDidFinishPlaying:) name:AVPlayerItemDidPlayToEndTimeNotification object:nil];

          cell.avLayer.frame = CGRectMake(5, 9, 310, 310);
          [cell.contentView.layer addSublayer:cell.avLayer];
          [cell.videoPlayer play];
          [cell.contentView addSubview:cell.videoActivity];
     }
     else
     {
         cell.videoPlayer = nil;
         [cell.avLayer removeFromSuperlayer];
         cell.videoItem = nil;
         [cell.videoPlayer pause];
     }
}

Dies funktioniert gut - aber es verlangsamt das Scrollen der Tabellenansicht fürchterlich. Bitte schlagen Sie mir eine andere bessere Methode vor.