How to check in which position (landscape or portrait) is the iPhone now?

Question

I have an app with a tab bar, and nav controllers in each tab. When user shakes the device, a UIImageView appears as a child view in the nav controller. But the

Answer 1

And if you simply want whether the device is in landscape or portrait, a simple solution is (in Swift):

var orientation = "portrait"
if UIScreen.main.bounds.size.width > UIScreen.main.bounds.size.height {
   orientation = "landscape"
}