if UIDeviceOrientationIsLandscape(UIDevice.currentDevice().orientation) {
print("landscape")
}
if UIDeviceOrientationIsPortrait(UIDevice.currentDevice().orientation){
print("portrait")
}
How can I check if it's landscape left or right?
you can do something like,
if UIDevice.currentDevice().orientation == UIDeviceOrientation.LandscapeLeft{
}
else if UIDevice.currentDevice().orientation == UIDeviceOrientation.LandscapeRight{
}
else if UIDevice.currentDevice().orientation == UIDeviceOrientation.UIDeviceOrientationPortraitUpsideDown{
}
else if UIDevice.currentDevice().orientation == UIDeviceOrientation.UIDeviceOrientationPortrait{
}
SWIFT 5
if UIDevice.current.orientation.isLandscape {
} else if UIDevice.current.orientation.isFlat {
} else if UIDevice.current.orientation.isPortrait {
} else if UIDevice.current.orientation.isValidInterfaceOrientation {
}
SWIFT 3
if UIDevice.current.orientation == UIDeviceOrientation.landscapeLeft {
} else if UIDevice.current.orientation == UIDeviceOrientation.landscapeRight {
} else if UIDevice.current.orientation == UIDeviceOrientation.portrait {
} else if UIDevice.current.orientation == UIDeviceOrientation.portraitUpsideDown {
}
This works on Swift 3 & 4
switch UIApplication.shared.statusBarOrientation {
case .portrait:
//do something
break
case .portraitUpsideDown:
//do something
break
case .landscapeLeft:
//do something
break
case .landscapeRight:
//do something
break
case .unknown:
//default
break
}
Swift 5.0:
UIDevice.current.orientation.isLandscape
UIDevice.current.orientation.isFlat
UIDevice.current.orientation.isPortrait
UIDevice.current.orientation.isValidInterfaceOrientation
isFlat: Indicating whether the specified orientation is face up or face down (The device is held parallel to the ground with the screen facing downwards or Not).
isValidInterfaceOrientation: Indicating whether the specified orientation is one of the portrait or landscape orientations.
If you have set some views to landscape form manually, so "isLandscape" value is not correct.
In this case you can use this condition:
if UIScreen.main.bounds.height < UIScreen.main.bounds.width {
print("LandScape Views")
print("Portrait Views")
}
For example I wanted to play all videos in landscape form while my app was only for portrait form, so in video views I used this condition in order to check if the view is landscape or not, independent of the phone orientation.
UIDeviceOrientation will return a value for that:
enum UIDeviceOrientation : Int {
case Unknown
case Portrait
case PortraitUpsideDown
case LandscapeLeft
case LandscapeRight
case FaceUp
case FaceDown
}
There is one thing that destroy all this answers - it's iOS9 iPad multitasking.
On iOS 9, an iPad app by default opts into iPad multitasking. This means that it must adopt all orientations at all times. Since you have not opted out of iPad multitasking, the runtime assumes that you do adopt all orientations at all times — and thus it doesn't need to bother to ask you what orientations you permit, as it already knows the answer (all of them).
To do right cell size for UICollectionView I do next :
func collectionView(_ collectionView: UICollectionView, layout
collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
if UIDevice.current.userInterfaceIdiom == .phone {
return CGSize(width: collectionView.frame.size.width, height: 120)
} else {
var width:CGFloat = 0
let height = 250
// because of iOS9 and iPad multitasking
if (UIApplication.shared.statusBarOrientation.rawValue <= UIInterfaceOrientation.portraitUpsideDown.rawValue) {
width = (collectionView.frame.size.width - 3) / 3
} else {
width = (collectionView.frame.size.width - 4) / 4
}
return CGSize(width: Int(width), height: Int(height))
}
}
and inside viewWillTransition next:
override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) {
if let layout = self.collectionViewLayout as? UICollectionViewFlowLayout {
layout.invalidateLayout()
}
}
because it works faster than without.
Swift 3+
switch UIDevice.current.orientation {
case .faceUp:
print("flat - up")
case .faceDown:
print("flat - down")
case .landscapeLeft:
print("landscape - left")
case .landscapeRight:
print("landscape - right")
case .portrait:
print("portrait - normal")
case .portraitUpsideDown:
print("portrait - upsideDown")
case .unknown:
print("unknown")
}
SWIFT 4.2
if UIDevice.current.orientation == UIDeviceOrientation.landscapeLeft {
print("Landscape Left")
}
else if UIDevice.current.orientation == UIDeviceOrientation.landscapeRight{
print("Landscape Right")
}
else if UIDevice.current.orientation == UIDeviceOrientation.portraitUpsideDown{
print("Portrait Upside Down")
}
else if UIDevice.current.orientation == UIDeviceOrientation.portrait {
print("Portrait")
}
