旋转ViewController

设置ViewController方向

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil

{

   self = [superinitWithNibName:nibNameOrNil bundle:nibBundleOrNil];

   if (self) {

        // Custom initialization

        UIInterfaceOrientation barOrientation = [[UIApplicationsharedApplication] statusBarOrientation];

       CGFloat angle = 0.0f;

       switch (barOrientation) {

            caseUIInterfaceOrientationPortrait:

                angle = 0.0f;

               break;

            caseUIInterfaceOrientationPortraitUpsideDown:

                angle = M_PI;

               break;

            caseUIInterfaceOrientationLandscapeLeft:

                angle = M_PI / 2;

               break;

            caseUIInterfaceOrientationLandscapeRight:

                angle = -M_PI /2;

               break;

           default:

               break;

        }

       CATransform3D transform = CATransform3DMakeRotation(angle, 0, 0, 1.0);

       self.view.layer.transform = transform;

    }

    return self;

}