title: Creating a fixed footer in viewport in iOS
body: <p>I want to create a footer fixed to the bottom of the viewport in an iOS app I'm developing (it's my first one, I come from a web dev background). However I'm having difficulty finding information on how to go about this.</p>
  
  <p>What I have in mind is essentially just 3 rectangular buttons next to each other that are just constantly fixed to the bottom of the viewport. I tried dragging a toolbar into my scene as a starting point, but in the interface builder it's placing itself under my table cell, rather than fixing to the bottom. I feel like this is probably easier to do programmatically, but I just don't know where to start.</p>
  
  <p>If someone could at the very least guide me in the right direction I'd really appreciate it. Thank you.</p>