title: Preloading pages of UIPageViewController
body: <p>I can't find a good solution to having the UIPageViewController preload the surrounding ViewControllers.</p>
  
  <p>Right now what happens is when the user starts to turn the page, nothing happens, the code calls </p>
  
  <pre><code>- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController
         viewControllerAfterViewController:(UIViewController *)viewController
  </code></pre>
  
  <p>and once its loaded thennnn it shows the animation. This takes too long and is not smooth.</p>
  
  <p>Anyone have a solution?</p>