title: UITableView Overlaying cells on top of each other
body: <p>I thought my table was fine until I changed the backgrounds to be a little transparent, which showed previous cells underneath new dequeued cells.  This is the code in my <code>tableView:cellForRowAtIndexPath:</code> method. I took out redundant label set up, which are all the same as <code>timeLabel</code>. </p>
  
  <pre><code>static NSString* cellIdentifer = @"Cell";
  
  UITableViewCell* cell = [tableView dequeueReusableCellWithIdentifier: cellIdentifer];
  
  if (!cell)
  {
      cell= [[UITableViewCell alloc] initWithStyle: UITableViewCellStyleSubtitle reuseIdentifier: cellIdentifer];
  }
  
  int offset = 5;
  int rowHeight = 120;
  UIView* cellView = [[UIView alloc] initWithFrame: CGRectMake(offset, offset, 320 - offset * 2, rowHeight - offset * 2)];
  
  cellView.backgroundColor = indexPath.row % 2 == 0 ? [UIColor colorWithWhite: 1.0 alpha: .8 ] : [UIColor colorWithWhite: .3 alpha: .8];
  
  int padding = 5;
  
  int x1 = 5;
  int x2 = CGRectGetWidth(cellView.frame) / 3;
  int x3 = x2 * 2;
  
  int y1 = 5;
  int y2 = CGRectGetHeight(cellView.frame) / 2 + padding;
  
  int width = CGRectGetWidth(cellView.frame) / 3 - padding;
  int sHeight = CGRectGetHeight(cellView.frame) / 2 - padding;
  int bHeight = CGRectGetHeight(cellView.frame) - padding;
  
  CGRect cell1 = CGRectMake(x1, y1, width, sHeight);
  
  int row = indexPath.row;// - 1;
  
  UILabel* timeLabel = [[UILabel alloc] initWithFrame: cell1];
  timeLabel.backgroundColor = [UIColor clearColor];
  timeLabel.text = [[self.tableData objectAtIndex: row] objectForKey: @"time"];
  [cellView addSubview: timeLabel];
  
  
  [cell.contentView addSubview: cellView];
  </code></pre>
  
  <p><img src="https://i.stack.imgur.com/kbfrd.png" alt="Here&#39;s a screenshot of what&#39;s happening"></p>