UITableViewController - image background
<p>i have UITableViewController, and I'm trying to set a image background.
the issue is the background image does not fit the whole screen, in other words, the image background <strong>does not</strong> stretch with the table cells.
this my code</p>

<pre><code>    let imgView =  UIImageView(frame: self.tableView.frame)
    let img = UIImage(named: "b2")
    imgView.image = img
    imgView.frame = CGRectMake(0, 0, self.tableView.frame.width, self.tableView.frame.height)
    imgView.contentMode = UIViewContentMode.ScaleAspectFill
    self.tableView.addSubview(imgView)
    self.tableView.sendSubviewToBack(imgView)
</code></pre>

<p><a href="https://i.stack.imgur.com/XxUrk.png" rel="noreferrer"><img src="https://i.stack.imgur.com/XxUrk.png" alt="enter image description here"></a></p>