title: how to I observe cell accessory Type UITableViewCellAccessoryCheckmark is checked or not?
body: <p>How do I observe cell accessory Type <code>UITableViewCellAccessoryCheckmark</code> is checked or not?</p>
  
  <p>In my app I added <code>UITableView</code> in a <code>UIAlertView</code>. I also used</p>
  
  <pre><code>cell.accessoryType = UITableViewCellAccessoryCheckmark;
  </code></pre>
  
  <p>In my tableView, i have 9 rows. When the user taps on first row then all rows become checked except second row. The user can check any row/rows as he wishes. When the user taps on the second row then only the second row is checked.</p>
  
  <p>Thanks in Advance :)</p>