ios - 在运行时更改方向更改 ViewControllers

Question

我想更改 ViewControllers On Screen 方向更改

我只有一个 ViewController 类和两个 StoryboardBased UIViewController。

  UIDeviceOrientation orientation = [UIDevice currentDevice].orientation;
    if (orientation == UIDeviceOrientationPortrait || orientation == UIDeviceOrientationPortraitUpsideDown)
    {
        [[NSBundle mainBundle] loadNibNamed:@"Portrait" owner:self options:nil];
    }
    else {
        [[NSBundle mainBundle] loadNibNamed:@"Landscape" owner:self options:nil];
    }

此代码可用于在方向更改时加载不同的 xib。但是如何在方向更改时在 Xib 文件中加载不同的 Controller ？

Answer 1

你可以这样做

   - (void)viewDidLoad
     {
          [[NSNotificationCenter defaultCenter] addObserver:self  selector:@selector(orientationChanged:)  name:UIDeviceOrientationDidChangeNotification  object:nil];   
     }

     -(void)orientationChanged:(NSNotification *)notification
      {
           UIInterfaceOrientation toInterfaceOrientation = [[UIApplication sharedApplication] statusBarOrientation];

           if (UIInterfaceOrientationIsPortrait(toInterfaceOrientation))
           {
                [[NSBundle mainBundle] loadNibNamed:@"Portrait" owner:self options:nil];            
           }
           else if (UIInterfaceOrientationIsLandscape(toInterfaceOrientation))
           {
                [[NSBundle mainBundle] loadNibNamed:@"Landscape" owner:self options:nil];
           }
      }

希望这对你有帮助......