在选项卡栏控制器中选择时以模态方式呈现视图控制器

Question

我有这个非常标准的标签栏控制器设置：

UIViewController *homeViewController = [[PLOTHomeViewController alloc] init];
UIViewController *upcomingViewController = [[PLOTUpcomingViewController alloc] init];
UIViewController *checkInViewController = [[PLOTCheckInViewController alloc] init];
UIViewController *watchlistViewController = [[PLOTWatchlistViewController alloc] init];
UIViewController *profileViewController = [[PLOTProfileViewController alloc] init];

PLOTNavigationController *homeNavVC = [[PLOTNavigationController alloc] initWithRootViewController:homeViewController];
PLOTNavigationController *upcomingNavVC = [[PLOTNavigationController alloc] initWithRootViewController:upcomingViewController];
PLOTNavigationController *checkInNavVC = [[PLOTNavigationController alloc] initWithRootViewController:checkInViewController];
PLOTNavigationController *watchlistNavVC = [[PLOTNavigationController alloc] initWithRootViewController:watchlistViewController];
PLOTNavigationController *profileNavVC = [[PLOTNavigationController alloc] initWithRootViewController:profileViewController];

self.tabBarController = [[PLOTTabBarController alloc] init];
self.tabBarController.viewControllers = [NSArray arrayWithObjects:homeNavVC, upcomingNavVC, checkInNavVC, watchlistNavVC, profileNavVC, nil];

但是，我试图弄清楚，当用户选择中间选项卡 (checkInViewController) 时，我可以如何以模态方式（全屏）呈现该视图控制器？我可能会在那个 VC 的 viewDidAppear 方法中想象一些东西，但我不确定你是否可以模态地展示自己，如果你是 VC？最好的方法是什么？

Answer 1

你可以使用

[self presentViewController:checkInViewController animated:YES completion:nil];

然后在目标视图控制器的viewWillAppear:中隐藏标签和导航栏

-(void)viewWillAppear:(BOOL)animated {
    [self.navigationController setNavigationBarHidden:YES animated:YES];
    [self.tabBarController.tabBar setHidden:YES];
}