Disabling user interaction of the current view on screen

Question

My app has many views and their respective controllers. Now I have a set of model classes with business logic in them. One of the model classes(subclass of NSObject) has the res

Answer 1

I am a little hesitant to disable interactions for the entire app - this is too aggressive and too intrusive, what happens when the view controller is inside a split view controller? Then both view controllers will be disabled!

Instead, you could create a clear-colored view controller and presented it modally, see example below for Swift 2:

private func TransparentViewController() -> UIViewController {
  let transparentViewController = UIViewController(nibName: nil, bundle: nil)
  transparentViewController.modalPresentationStyle = .OverCurrentContext
  transparentViewController.modalTransitionStyle = .CrossDissolve
  transparentViewController.view.backgroundColor = UIColor.clearColor()
  return transparentViewController
}

And now you can present it from within your view controller, before presenting the HUD:

let transparentViewController = TransparentViewController()
self.presentViewController(transparentViewController, animated:false, completion: nil) 

Hope this helps!