Detect device orientation in Init function - ios

Question

I am detecting the device orientation with these lines of code:
UIDevice.currentDevice().orientation.isPortrait.boolValue
UIDevice.currentDevice().orientation.isLandscape.boolValue
And I detect check if it's an iPad with this code:
userInterfaceIdiom == .Pad
I used this code in commonInit() function which is called in the Init() function. When I execute my code on iPad the two first lines return both false which is not correct, one of them should be true. The third line is working fine.
If I use the code in other functions, such as supportedInterfaceOrientations(), it works fine. Do you know what could be the problem?

Answer 1

You are probably neglecting this documentation:
You also use the UIDevice instance to detect changes in the device’s
characteristics, such as physical orientation. You get the current
orientation using the orientation property or receive change
notifications by registering for the
UIDeviceOrientationDidChangeNotification notification. Before using
either of these techniques to get orientation data, you must enable
data delivery using the beginGeneratingDeviceOrientationNotifications
method. When you no longer need to track the device orientation, call
the endGeneratingDeviceOrientationNotifications method to disable the
delivery of notifications.
Also, this is a 3-D orientation. You probably don't want that. What is the actual value of simply the orientation property? See:
enum UIDeviceOrientation : Int {
case Unknown
case Portrait
case PortraitUpsideDown
case LandscapeLeft
case LandscapeRight
case FaceUp
case FaceDown }
Probably what you really want is here:
"interfaceOrientation" is deprecated in iOS 8, How to change this method Objective C
Sometimes TraitCollections doesn't fill all your design needs. For
those cases, Apple recommends to compare view's bounds :
if view.bounds.size.width > view.bounds.size.height {
// ... }