Ios – Adding new tabs to a tab bar controller

iosuitabbarcontrollerxcode

I am creating a tab bar iOS app. The tab bar view controller has two tabs, each of them connected to a view controller.

This how it looks:

enter image description here

I need to add more tabs to the tab controller. I am doing it at the storyboard as follows:

I add a new view controller.
I control-drag from the tab bar controller to the new created view controller.
A window opens and I select Relationship Segue-View Controller.
The segue from the tab bar controller to the new view controller is created.

I think that is the way to do it, but after that the tab bar controller doesn't show any tab icons, the tab bar becomes grey.

Like this:

enter image description here

I need to know what am I doing wrong.

Best Answer

First drag A TabBarController from Object Library you see that only two tabs with thier VC there.

to add more Tab Item in TabBarVC drag VC from Object Library

Then Control drag from TabBarVC to Newly VC then Segue relation pop ups

Select last one Relationship Segue -> View Controllers

Here is the Screen

Related Solutions

Ios – Rearranging Tab Bar Controller Order in StoryBoard

In 4.5 save the storyboard after adding a Controller, switch to another file and then back to the Storyboard and the tab dragging should work again.

Ios – Best practices for Storyboard login screen, handling clearing of data upon logout

Your storyboard should look like this

In your appDelegate.m inside your didFinishLaunchingWithOptions

//authenticatedUser: check from NSUserDefaults User credential if its present then set your navigation flow accordingly

if (authenticatedUser) 
{
    self.window.rootViewController = [[UIStoryboard storyboardWithName:@"Main" bundle:[NSBundle mainBundle]] instantiateInitialViewController];        
}
else
{
    UIViewController* rootController = [[UIStoryboard storyboardWithName:@"Main" bundle:[NSBundle mainBundle]] instantiateViewControllerWithIdentifier:@"LoginViewController"];
    UINavigationController* navigation = [[UINavigationController alloc] initWithRootViewController:rootController];

    self.window.rootViewController = navigation;
}

In SignUpViewController.m file

- (IBAction)actionSignup:(id)sender
{
    AppDelegate *appDelegateTemp = [[UIApplication sharedApplication]delegate];

    appDelegateTemp.window.rootViewController = [[UIStoryboard storyboardWithName:@"Main" bundle:[NSBundle mainBundle]] instantiateInitialViewController];
}

In file MyTabThreeViewController.m

- (IBAction)actionLogout:(id)sender {

    // Delete User credential from NSUserDefaults and other data related to user

    AppDelegate *appDelegateTemp = [[UIApplication sharedApplication]delegate];

    UIViewController* rootController = [[UIStoryboard storyboardWithName:@"Main" bundle:[NSBundle mainBundle]] instantiateViewControllerWithIdentifier:@"LoginViewController"];

    UINavigationController* navigation = [[UINavigationController alloc] initWithRootViewController:rootController];
    appDelegateTemp.window.rootViewController = navigation;

}

Swift 4 Version

didFinishLaunchingWithOptions in app delegate assuming your initial view controller is the signed in TabbarController.

if Auth.auth().currentUser == nil {
        let rootController = UIStoryboard(name: "Main", bundle: Bundle.main).instantiateViewController(withIdentifier: "WelcomeNavigation")
        self.window?.rootViewController = rootController
    }

    return true

In Sign up view controller:

@IBAction func actionSignup(_ sender: Any) {
let appDelegateTemp = UIApplication.shared.delegate as? AppDelegate
appDelegateTemp?.window?.rootViewController = UIStoryboard(name: "Main", bundle: Bundle.main).instantiateInitialViewController()
}

MyTabThreeViewController

 //Remove user credentials
guard let appDel = UIApplication.shared.delegate as? AppDelegate else { return }
        let rootController = UIStoryboard(name: "Main", bundle: Bundle.main).instantiateViewController(withIdentifier: "WelcomeNavigation")
        appDel.window?.rootViewController = rootController

Best Answer

Related Solutions

Ios – Rearranging Tab Bar Controller Order in StoryBoard

Ios – Best practices for Storyboard login screen, handling clearing of data upon logout

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