title: In UITableViewCell, how can I change the style of the clicked button bold, while the other cells remain still?
body: <p>The only thing UITableViewCell contains is one UIButton. So far, I can print the 'currentTitle' of the clicked UIButton on console. What I'd like to do is change the style of the clicked button bold. If another one is clicked, the former one should go back to regular and the new one needs to change bold.</p>
  
  <p>It they were multiple buttons in a UIViewController, I would have easily done this by adding those buttons separately but I don't think this case will be done in that way.</p>
  
  <p>Should I save the index of the selected button in the UIViewController class, and reload the UITableView? If so, can anyone let me know how to handle this? I have this idea but I don't know how to do it.</p>