How Do I detect the orientation of the device on iOS?

Really old thread, but no real solution.

I Had the same problem, but found out that getting The UIDeviceOrientation isn't always consistent, so instead use this:

UIInterfaceOrientation orientation = [UIApplication sharedApplication].statusBarOrientation;if(orientation == 0) //Default orientation     //UI is in Default (Portrait) -- this is really a just a failsafe. else if(orientation == UIInterfaceOrientationPortrait)    //Do something if the orientation is in Portraitelse if(orientation == UIInterfaceOrientationLandscapeLeft)    // Do something if Leftelse if(orientation == UIInterfaceOrientationLandscapeRight)    //Do something if right

if UIViewController:

if (UIDeviceOrientationIsLandscape(self.interfaceOrientation)){    // }

if UIView:

if (UIDeviceOrientationIsLandscape([UIApplication sharedApplication].statusBarOrientation)){    //}

UIDevice.h:

#define UIDeviceOrientationIsPortrait(orientation)  ((orientation) == UIDeviceOrientationPortrait || (orientation) == UIDeviceOrientationPortraitUpsideDown)#define UIDeviceOrientationIsLandscape(orientation) ((orientation) == UIDeviceOrientationLandscapeLeft || (orientation) == UIDeviceOrientationLandscapeRight)

Updated:

add this code to xxx-Prefix.pch then you can use it anywhere:

// check device orientation#define dDeviceOrientation [[UIDevice currentDevice] orientation]#define isPortrait  UIDeviceOrientationIsPortrait(dDeviceOrientation)#define isLandscape UIDeviceOrientationIsLandscape(dDeviceOrientation)#define isFaceUp    dDeviceOrientation == UIDeviceOrientationFaceUp   ? YES : NO#define isFaceDown  dDeviceOrientation == UIDeviceOrientationFaceDown ? YES : NO

usage:

if (isLandscape) { NSLog(@"Landscape"); }

For what You looking for first you have to Get Notification if Orientation Changed!You Can set This Thing in viewDidLoad like

[[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(OrientationDidChange:) name:UIDeviceOrientationDidChangeNotification object:nil];

and whenever Orientation of your Device changed OrientationDidChange Called where You can do whatever You Want as Per Orientation

-(void)OrientationDidChange:(NSNotification*)notification{    UIDeviceOrientation Orientation=[[UIDevice currentDevice]orientation];    if(Orientation==UIDeviceOrientationLandscapeLeft || Orientation==UIDeviceOrientationLandscapeRight)    {    }    else if(Orientation==UIDeviceOrientationPortrait)    {    }}