在AppDelegate application:didFinishLaunchingWithOptions: UISplitViewController中，我使用以下代码实例化PopMenuViewController *menuVC = [[PopMenuViewController alloc] initWithStyle:UITableViewStylePlain];
UINavigationController *menuNavController = [[UINavigationController alloc] initWithRootViewController:menuVC];
PopMenuDetailViewController *detailVC = [[PopMenuDetailViewController alloc] initWithNibName:@"PopMenuDetailViewController" bundle:nil];
UINavigationController *detailNavController = [[UINavigationController alloc] initWithRootViewController:detailVC];
menuVC.detailViewController = detailVC;
splitViewController = [[UISplitViewController alloc] init];
splitViewController.viewControllers = @[menuNavController, detailNavController];
splitViewController.presentsWithGesture = YES;
splitViewController.delegate = self;
self.window.rootViewController = splitViewController;
：
presentsWithGesture但是，在纵向模式下，当我在屏幕上滑动时（从左到右），左视图控制器不会出现（但YES设置为{{1}}）。
我在Simulator和iOS 7的物理设备上运行该项目。
任何想法？