Question

我想知道如何在新视图上显示标签控制器。

我的标签控制器上有3个项目：主页，信息，帮助

在家里，有一个按钮打开一个新视图，这个新视图称为“测试版”，但没有显示标签控制器，我不知道如何显示标签控制器，我不希望“测试版”作为标签项目虽然..

任何帮助将不胜感激。

这是我到目前为止使用的一些代码

//this is in appdelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{ 

self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

    // Override point for customization after application launch.
    UIViewController *viewController1 = [[HomeViewController alloc] initWithNibName:@"HomeViewController" bundle:nil];
    UIViewController *viewController2 = [[InformViewController alloc] initWithNibName:@"InformViewController" bundle:nil];
    UIViewController *viewController3 = [[HelpViewController alloc] initWithNibName:@"HelpViewController" bundle:nil];

    self.tabBarController = [[UITabBarController alloc] init];
    self.tabBarController.viewControllers = @[viewController1, viewController2, viewController3];
    self.window.rootViewController = self.tabBarController;


    [self.window makeKeyAndVisible];
    return YES;



//this opens the new view called beta

@implementation HomeViewController

-(IBAction)Showbeta
{
    betaViewController *betaViewController = [[betaViewController alloc] initWithNibName:nil bundle:nil];
    [self presentViewController:betaViewController animated:YES completion:NULL];    
}

//this is in betaviewcontroller
@interface betaViewController ()

@end

@implementation betaViewController 

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
        // self.window.rootViewController = self.tabBarController; --> this did not work
    }
    return self;
}

Answer 1

如果我理解正确，您需要为该选项卡创建一个视图控制器，其导航控制器的根目录是home vc。然后，当您想要显示测试版视图时，您可以像任何其他导航控制器一样推动它，它就会停留在标签栏中。

所以你应该调整你的代码：

UIViewController *viewController1 = [[HomeViewController alloc] initWithNibName:@"HomeViewController" bundle:nil];
UIViewController *viewController2 = [[InformViewController alloc] initWithNibName:@"InformViewController" bundle:nil];
UIViewController *viewController3 = [[HelpViewController alloc] initWithNibName:@"HelpViewController" bundle:nil];

UINavigationController *navControl = [[UINavigationController alloc] initWithRootViewController:viewController1]

self.tabBarController = [[UITabBarController alloc] init];
//self.tabBarController.viewControllers = @[viewController1, viewController2, viewController3];
self.tabBarController.viewControllers = @[navController, viewController2, viewController3];

Answer 2

您可以在appDelegate类中声明tabController实例。现在将您的主视图控制器指定为rootViewController。单击主屏幕上的按钮，将出现一个应该有tabViewController的新视图。所以，你现在应该将rootViewController设置为： [[[UIApplication sharedApplication] delegate] window] .rootViewController = tabViewController;

iOS - 如何在新视图上显示选项卡控制器

2 个答案: