Check device orientation

UIInterfaceOrientation orientation = [UIApplication sharedApplication].statusBarOrientation;

 if ((orientation == UIInterfaceOrientationLandscapeLeft) || (orientation == UIInterfaceOrientationLandscapeRight)) {

     //Landscape mode

}

 else if ((orientation == UIInterfaceOrientationPortrait) || (orientation == UIInterfaceOrientationPortraitUpsideDown)) {

     //Portrait mode

}