旋转iPhone并实例化新的UIViewController?

更干净的方法是不使用UIInterfaceOrientation进行旋转。

为了弥补这一点,我简单地订阅了 通知。微妙的不同。视图1不必支持自动旋转才能使此方法工作。在viewDidLoad中输入以下代码:

[[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(detectOrientation) name:@"UIDeviceOrientationDidChangeNotification" object:nil];

然后只需定义方法检测:

-(void) detectOrientation {

     if (([[UIDevice currentDevice] orientation] == UIDeviceOrientationLandscapeLeft) || 
            ([[UIDevice currentDevice] orientation] == UIDeviceOrientationLandscapeRight)) {

        //load view 2


    } else if ([[UIDevice currentDevice] orientation] == UIDeviceOrientationPortrait) {

        // load view 1

    }   
}

-(void) transformView2ToLandscape {

  NSInteger rotationDirection;
  UIDeviceOrientation currentOrientation = [[UIDevice currentDevice] orientation];

  if(currentOrientation == UIDeviceOrientationLandscapeLeft){
    rotationDirection = 1;
  }else {
    rotationDirection = -1;
  }

  CGRect myFrame = CGRectMake(0, 0, 480, 300);
  CGAffineTransform transform = [[self view2] transform];
  transform = CGAffineTransformRotate(transform, degreesToRadians(rotationDirection * 90));
  [[self view2] setFrame: myFrame];
  CGPoint center = CGPointMake(myFrame.size.height/2.0, myFrame.size.width/2.0);
  [[self view2] setTransform: transform];
  [[self view2] setCenter: center];

}

这就是我在视图中不支持自动旋转的情况下交换视图和旋转的方式。

因此,您需要通过以下方式强制它们允许所有方向更改: -(布尔)应自动旋转指针面定向:(UIInterfaceOrientation)interfaceOrientation{ }

然后,为了加载新的视图控制器,您应该响应:

- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation
{
  if((fromInterfaceOrientation == UIInterfaceOrientationPortrait) ||
     (fromInterfaceOrientation == UIInterfaceOrientationPortraitUpsideDown))
  {    
    // Load the view controller you want to display in landscape mode...
  }
}

也可以使用:

-(void)willAnimateFirstHalfOfRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration

在我的例子中,我使用didRotateFromInterfaceOrientation来检查最后一个方向是否为纵向,如果是,则加载我希望以横向模式显示的视图。

然后,我在正在加载的viewcontroller中实现了相同的方法,它负责检测方向何时变回纵向,并从视图堆栈中移除自身。

希望对你有点帮助。

将其添加到选项卡栏控制器:

- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation {
    [self.selectedViewController didRotateFromInterfaceOrientation:fromInterfaceOrientation];
}

您是否实现了shouldAutorotateToInterfaceOrientation?如果没有,那可能就是你没有收到这些信息的原因。