Swift - UIDevice orientations using iOS12

In iOS12 Apple introduced a new way to check if your device is in “flat” mode, or better is on your desk.

Let’s take a look at the reference:

https://developer.apple.com/documentation/uikit/uideviceorientation/2981866-isflat

A Boolean value indicating whether the specified orientation is face up or face down.

var isFlat: Bool { get }

How it works?

First of all, you need to recognize the orientation change, that in iOS12 is a notification and must be implemented

NotificationCenter.default.addObserver(
  forName: UIDevice.orientationDidChangeNotification,
  object: nil,
  queue: .main,
  using: didRotate
)

and called:

var didRotate: (Notification) -> Void = { notification in

  // the new FLAT orientation  
  if UIDevice.current.orientation.isFlat {
    print( "UIDevice.current.orientation.isFlat " )
  }

  // the other orientations
  switch UIDevice.current.orientation {
    case .landscapeLeft:
      print("landscapeLeft")
    case .landscapeRight:
      print("landscapeRight")
    case .portrait:
      print("portrait")
    case .portraitUpsideDown:
      print("portraitUpsideDown")
    case .faceUp:
      print("faceUp")
    case .faceDown:
      print("faceDown")
    default: print("other")
  }
}

In this way, you are able to detect when the phone is in flat mode, face up or face down.

Author
Recent Posts

Alberto Pasca

Mobile Apps development Lead at Pirelli & C. S.p.A.

Software engineer with a strong passion for mobile 
development, security and connected things.

Swift – UIDevice orientations using iOS12

How it works?

Like this:

Related

How it works?

Share this:

Like this:

Related