Ios7 在ios 7中返回到上一个视图控制器时，只有一个视图控制器方向问题

在我的应用程序中，我们只需要一个视图控制器将处于所有方向模式，其他视图控制器将仅处于纵向模式

我使用下面的代码，它的工作非常完美，但当回到pervious view controller时，当我从横向模式返回时，它不会在纵向模式下旋转

- (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window {
  // Get topmost/visible view controller
  UIViewController *currentViewController = [self topViewController];

  // Check whether it implements a dummy methods called canRotate
  if ([currentViewController respondsToSelector:@selector(canRotate)]) {
      // Unlock landscape view orientations for this view controller
      return UIInterfaceOrientationMaskAllButUpsideDown;
  }

  // Only allow portrait (standard behaviour)
  return UIInterfaceOrientationMaskPortrait;
}

- (UIViewController*)topViewController {
  return [self topViewControllerWithRootViewController:[UIApplication sharedApplication].keyWindow.rootViewController];
}

- (UIViewController*)topViewControllerWithRootViewController:(UIViewController*)rootViewController {
  if ([rootViewController isKindOfClass:[UITabBarController class]]) {
    UITabBarController* tabBarController = (UITabBarController*)rootViewController;
    return [self topViewControllerWithRootViewController:tabBarController.selectedViewController];
  } else if ([rootViewController isKindOfClass:[UINavigationController class]]) {
    UINavigationController* navigationController = (UINavigationController*)rootViewController;
    return [self topViewControllerWithRootViewController:navigationController.visibleViewController];
  } else if (rootViewController.presentedViewController) {
    UIViewController* presentedViewController = rootViewController.presentedViewController;
    return [self topViewControllerWithRootViewController:presentedViewController];
  } else {
    return rootViewController;
  }
}

---

我一直在反对同一个问题。通过在要返回的控制器的视图中添加调整，可以强制将方向恢复到其正常配置：

-(void)viewWillAppear:(BOOL)animated{
[super viewWillAppear:animated];

NSNumber *value = [NSNumber numberWithInt:UIInterfaceOrientationPortrait];
[[UIDevice currentDevice] setValue:value forKey:@"orientation"];
}