title: Showing & Hiding UIButton with Animation
body: <p>How would I go about making this <code>UIButton</code> slowly disappear from the view? The animation I'm looking for would make the button look like its widthrawing downward. Should I use <code>Core Animation</code>? I'm rather new to iPhone development, but this seems like something that should be doable</p>
  
  <p><img src="https://i.stack.imgur.com/vFHTt.png" alt="enter image description here"></p>