title: Cannot find interface declaration for 'UIView'
body: <p>I'm trying to add an objective C <a href="https://github.com/scalessec/Toast">library for toasts</a> to my xcode project.
  But I'm getting a number of these errors:</p>
  
  <p><code>"Cannot find interface declaration for 'UIView'"</code></p>
  
  <p><code>"Expected a type"</code></p>
  
  <p>I have linked with the QuartzCore.framework. And the .m file has been added to compile sources.
  What am I missing? I'm a newbie to ios. Please help.</p>