objective c - 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 rather simple question, but I haven't been able to wrap my head around it. Below is what I have done so far:

UIDevice *myDevice = [UIDevice currentDevice] ;
[myDevice beginGeneratingDeviceOrientationNotifications];
UIDeviceOrientation deviceOrientation = myDevice.orientation;
BOOL isCurrentlyLandscapeView = UIDeviceOrientationIsLandscape(deviceOrientation);
[myDevice endGeneratingDeviceOrientationNotifications];

In my mind this should work. I enable the device to receive device orientation notices, then ask for what orientation it is in, but then it is not working and I don't know why.

Answer 1

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 Portrait
else if(orientation == UIInterfaceOrientationLandscapeLeft)
    // Do something if Left
else if(orientation == UIInterfaceOrientationLandscapeRight)
    //Do something if right