title: iOS ImageView not filling screen and Button not on the bottom of screen
body: <p>I'm new to iOS. I'm trying to achieve this layout in the app. I placed an ImageView and Button like that on the StoryBoard but when I run the app, the ImageView doesnt fill the screen and the Button is not in the bottom. How do I accomplish this?</p>
  
  <p><a href="https://i.stack.imgur.com/d2M83.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/d2M83.png" alt="enter image description here"></a></p>