在選項卡欄控制器中選擇時以模態顯示視圖控制器

Question

我有這個非常標准的標簽欄控制器設置：

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，我試圖找出如何在用戶選擇中間選項卡（checkInViewController）時以模態方式（全屏顯示）顯示View Controller？ 我可能會想象該VC的viewDidAppear方法中有什么問題，但是我不確定如果您是VC，是否可以模態呈現自己？ 最好的方法是什么？

Answer 1

您可以使用

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

然后在目標視圖控制器的viewWillAppear:隱藏選項卡和導航欄viewWillAppear:

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