title: How to hide and show UIButton in swift? For 2 different cases
body: <p>I have 2 button on UI. If button1 clicked, show case1 button. And button2 clicked, show case2 button.</p>
  <p>But cases buttons should be hidden when the page is first opened. It should show whenever button1 or button2 is clicked.</p>
  <p>How can I do it? Thank you.</p>
  <p><a href="https://i.stack.imgur.com/s53Pr.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/s53Pr.png" alt="enter image description here" /></a></p>