title: When I Scroll the tableView, how can I know which cell is touch the Green Area
body: <p>
  <a href="https://photos.app.goo.gl/5LfFTA8zNVWsIsua2" rel="nofollow noreferrer">The Screen In My Prototype</a></p>
  
  <p>My question is based on<code>The image in the link</code> <em>.  Because my reputation is not enough, I can't post any image here</em></p>
  
  <p>We assume <strong>that Green Area in the image</strong> is <strong>fixed</strong>.<br>
  And, my requirement is that When <code>a cell</code> contains the GA,  <code>that cell's</code>audioPlayer will speak the word in the cell, like <em>AirPod</em></p>
  
  <p><strong>OR</strong>, you can regard my requirement as <code>When a cell contains the GA,  the text of that cell's label changes to "Touch the Green"</code></p>
  
  <p><strong>My question</strong> is that when I Scroll the tableView, how can I get  <code>which one(Cell)</code> is containing the GA?
  But I can’t find a way to get that(<strong>some position/index information about That Cell</strong>)</p>
  
  <p><em>could anyone help me ? ObjectiveC solution is OK, Swift solution is better for me, Thank you so much</em></p>