title: Adding texts to an UIImageView like tagging feature in facebook app
body: <p>I would like to implement the similar feature as in the facebook iPad app in which the text can be added to an image as in the below image. </p>
  
  <p><img src="https://i.stack.imgur.com/7etpK.jpg" alt="image when unzoomed"> </p>
  
  <p>I can add a view like this with the text in the imageview, but don't know how to keep the size of the added view like in the below image when its zoomed in or out (like pins in mapview)?</p>
  
  <p><img src="https://i.stack.imgur.com/WQzpV.jpg" alt="zoomed image"></p>
  
  <p>Can some one suggest me implement like in the above facebook tagging feature in my app? Thanks in advance. </p>