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

Question

I have a question on how to detect the device orientation on iOS. I don\'t need to receive change notifications, just the current orientation itself. This seems to be a rath

Answer 1

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"); }