原文地址: http://blog.csdn.net/ginhoor/article/details/20454229

通过
[[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationLandscapeLeft animated:YES];
方法的枚举可以设置状态栏方向，但是需要在viewController中重写

• (BOOL)shouldAutorotate
  {
  return NO;
  }
  返回值为NO
  如果此viewController在某个UINavigationController中需要在AppDelegate中写个类目
  @implementation UINavigationController (Rotation)

• (BOOL)shouldAutorotate
  {
  //在viewControllers中返回需要改变的viewController
  return [[self.viewControllers firstObject] shouldAutorotate];
  }

@end

如果此UINavigationController在某个UITabBarController中需要在AppDelegate中再写个类目
@implementation UITabBarController (Rotation)

• (BOOL)shouldAutorotate
  {
  //在viewControllers中返回需要改变的NavigationController
  return [[self.viewControllers firstObject] shouldAutorotate];
  }

@end