How can I get ViewController from TabBarController on AppDelegate?

Question

I use iOS5 storyboard, and my initial view controller is TabBarController, there are four relationships to view1 & view2 & view3 & view4, so, how can I get the view3's view controller?

I tried:

[[[[self.window.rootViewController navigationController] tabBarController] viewControllers] objectAtIndex:2];

But it doesn't work...

Solution 1

You said that your initial (root) view controller is a UITabBarController but you are referring to a view controller with a navigation controller with a tab bar controller. Are you getting mixed up in your view controller hierarchy?

edit:

if your root view controller is actually just a tab bar controller and you want to get the 3rd tab here is the code:

[[((UITabBarController *)self.window.rootViewController) viewControllers] objectAtIndex:2];

Solution 2

[self.tabBarController setSelectedIndex:2];

Solution 3

Try this way

In any view controller

 YourViewController *yourViewController= (YourViewController*)  [self.tabBarController.viewControllers objectAtIndex:3];

this return your that view controller object.Cast it to your view controller and you are ready to use that. run and Go

Solution 4

Swift 4.0

let viewC = self?.tabBarController.viewControllers.first // will give single Navigation Controller on index 0
let viewC = self?.tabBarController?.viewControllers// will give array of Navigation Controller

Further you can check the Visible ViewController

if let nav = viewC as? UINavigationController {
   if nav.visibleViewController is YourViewControllerName{
        // Do Code
     }
}

Solution 5

   UIViewController *loginViewController=self.window.rootViewController;

   UITabBarController *controller=loginViewController.tabBarControllerObj;

   UIViewController *selectedController=controller.selectedViewController;

From this you will get selected view controller.

For getting all view controller just replace

NSArray *viewControllers = [controller viewControllers];

View more solutions