title: Swift - Load ViewController in background
body: <p>i have a View Controller with a huge stack of Images in an Array. When i press the Button that takes me to View Controller it takes about 8-15 Seconds to load. Now I want to make a Loading screen so every time the app start, the View controller should be loaded in background.</p>
  
  <p>How can I do this?</p>
  
  <p>Thanks!</p>