title: UITableview with images scroll very slow
body: <p>I have a UITableView which downloads its tableviewcells images from a server.</p>
  
  <p><em>I observed that the table scroll very slowly.</em></p>
  
  <p>I thought that this might be due to the downloading, but I have realized that the table still scroll slow after download has finished and the image icon size is very less.</p>
  
  <p>The code:</p>
  
  <pre><code>- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
  {
      btnBack.hidden = FALSE;
  
      static NSString *CellIdentifier = @"Cell";
  
      UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
  
      if (cell == nil)
      {
          cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
          cell.selectionStyle = UITableViewCellSelectionStyleNone;
  
          /////////////////////   Cell other accessories    /////////////////////
          cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
          cell.backgroundColor = [UIColor clearColor];
  //        cell.backgroundView = [[UIImageView alloc] initWithImage:[[UIImage imageNamed:@"list_1.jpg"] stretchableImageWithLeftCapWidth:0.0 topCapHeight:5.0]];
  //        cell.selectedBackgroundView = [[UIImageView alloc] initWithImage:[[UIImage imageNamed:@"list_2.jpg"] stretchableImageWithLeftCapWidth:0.0 topCapHeight:5.0]];
  
          /////////////////////   Cell Title    /////////////////////
          cell.textLabel.font = [UIFont fontWithName:@"Noteworthy" size:17.0];
          cell.textLabel.font = [UIFont boldSystemFontOfSize:17.0];
          cell.textLabel.textColor = [UIColor blackColor];
          cell.textLabel.highlightedTextColor = [UIColor blackColor];
  
  
      }
  
          /////////////////////   Cell Title    /////////////////////
          cell.textLabel.text = [NSString stringWithFormat:@"     %@", [test.arrTitle objectAtIndex:indexPath.row]];
  
  
          /////////////////////   Cell Image    /////////////////////
  
  
          NSString *Path;
          Path = [NSString stringWithFormat:@"http://%@",[test.arrImages objectAtIndex:indexPath.row]];
          NSLog(@"image--&gt;%@",[test.arrImages objectAtIndex:indexPath.row]);
          NSString *strImage = Path;
          NSURL *url4Image = [NSURL URLWithString:strImage];    
          NSData *data = [NSData dataWithContentsOfURL:url4Image];
          image =[[UIImage alloc] initWithData:data];
          cell.imageView.image =image;
          [image release];
  
          return cell;
  }
  </code></pre>