title: How do I get a different UIImage Array every time I click a button?
body: <p>So basically I have a button and I need my UIImage to change randomly to one of three images in my array every time I click the button. Right now what happens when I click the button, is it just picks a random image and then when I click it again the image stays the same. </p>
  
  <p>Here's what I have written inside my button:</p>
  
  <pre><code>@IBAction func scissorButton(_ sender: UIButton) {
      playerChoice.image = scissor.png
      computerChoice.image = computerArray[randomChoice]
  }
  </code></pre>