title: How to add camera button to UIImageView
body: <p>I would like to add a background image to a <code>UIImageView</code>. At the moment, in the empty frame of the <code>UIImageView</code> I have a <code>tapGestureRcognizer</code> to open the camera.</p>
  
  <pre><code>let imageView = whiskyPicture
      let tapGestureRecognizer = UITapGestureRecognizer(target:self, action:#selector(DataInsertController.imageTapped(_:)))
      imageView!.userInteractionEnabled = true
      imageView!.addGestureRecognizer(tapGestureRecognizer)
  
  func imageTapped(sender: UITapGestureRecognizer) {
      imagePicker = UIImagePickerController()
      imagePicker.allowsEditing = true
      imagePicker.delegate = self
      imagePicker.sourceType = .Camera
  
      presentViewController(imagePicker, animated: true, completion: nil)
  </code></pre>
  
  <p>Now I would like to add a background image in the <code>UIImageView</code>, that the user can see where to tap. The best thing would be to add the camera icon of iOS to the UIImage. After picking a photo, the background image should be gone.</p>
  
  <p>Any advice how to do that?</p>
  
  <p>Storyboard looks like this:</p>
  
  <p><a href="https://i.stack.imgur.com/fMKEF.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/fMKEF.png" alt="DataInsertViewController Storyboard"></a></p>
  
  <p>In the <code>UIImageView</code> I would like to add a background image.</p>