Attaching an UIimage behind a UItexView in tableview
<p>I have attached a UItextView in tableview cell. Now I want to insert an UIimage behind it like a chat bubble.But everytime I scroll the tableview ,  the Uitextview becomes smaller in width and longer in height. The text also gets resized from single to multi line. Also ,the same thing happens when I scroll back to an earlier cell ( for example the first row).
I can't figure out why this is happening. </p>

<p>My code is: 
(<strong>SampleTableViewCell</strong> is my custom UItableViewCell class and <strong>lblTitle</strong> is my UitextView outlet.)</p>

<pre><code>func tableView(tableView: UITableView, willDisplayCell cell: SampleTableViewCell, forRowAtIndexPath indexPath: NSIndexPath) 
 {

    cell.lblTitle.removeConstraints(cell.lblTitle.constraints)

    let stringTitle = carName[indexPath.row] as String //carName is an array
    cell.lblTitle.text=stringTitle
    cell.lblTitle.sizeToFit()

    let h = cell.lblTitle.frame.size.height
    let w = cell.lblTitle.frame.size.width
    let constraints = NSLayoutConstraint(item: cell.lblTitle, attribute: .Width, relatedBy: .Equal, toItem: cell.lblTitle, attribute: .Height, multiplier: 0, constant: w)
    cell.lblTitle.addConstraint(constraints)

    let kl = UIImage(imageLiteral: "bubble")
    let imageView  = UIImageView(frame:CGRectMake(0, 0, w, h))
    imageView.image = kl
    imageView.alpha = 0.4
    cell.lblTitle.addSubview(imageView)
    cell.lblTitle.sendSubviewToBack(imageView)
  }  
</code></pre>