Open the app in a specific tab in tabbar

Question

I have an app with a TabBar with 5 tabs (regular tab bar with no custom class). When I start the app the left tab is opened. I want it to open the middle one first. I've tried putting

[self.tabBarController setSelectedIndex:3];

in the ViewDidLoad of the ViewController that is first opened but the tab isn't switching. I can see it's highlighted but not selected. If I put the code above under viewWillAppear it will be selected on first run but when I'll select the left tab from time to time it will jump to the middle one.

Also tried this without success:

DetailsViewController* vc = [self.storyboard instantiateViewControllerWithIdentifier:@"DetailsViewController"];
[self.navigationController pushViewController:vc animated:true];

What Am I doing wrong?

Interface. And dragging triggered segaues to viewcontrollers — Segev, Dec 20 '12 at 08:35
Maybe [next link](http://stackoverflow.com/questions/4195316/iphone-how-i-hide-a-tab-bar-button) help you, if I understand you correctly. — Neznajka, Dec 20 '12 at 08:38
Try setting it in application:didFinishLaunchingWithOptions: like [self.window.rootViewController.tabBarController setSelectedIndex:3]; — Rahul Wakade, Dec 20 '12 at 08:39
This is the only solution that worked for me. Writing it here so I'll update the question in 2 days.in appdelegate: `UITabBarController *tabBar = (UITabBarController *)self.window.rootViewController; [tabBar setSelectedIndex:2]; ` — Segev, Dec 20 '12 at 10:34

Segev · Accepted Answer · 2014-04-12T18:28:37.383

10

This is the only solution that worked for me. in appdelegate:

UITabBarController *tabBar = (UITabBarController *)self.window.rootViewController; 
[tabBar setSelectedIndex:2];

edited Apr 12 '14 at 18:28

answered Dec 28 '12 at 00:48

Segev

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score 1 · Answer 2 · edited Dec 20 '12 at 10:11

1

In storyboard set custom class to the tabbarController and in that custom class

-(void) viewDidLoad
{
    [self.tabBarController setSelectedIndex:3];
}

edited Dec 20 '12 at 10:11

Rahul Wakade

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answered Dec 20 '12 at 09:30

junaidsidhu

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score 0 · Answer 3 · answered Dec 20 '12 at 08:39

0

There is a need to call

tabBarController.selectedIndex = desiredIndex;

Inside applicationDidLaunch.

answered Dec 20 '12 at 08:39

Misha

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score 0 · Answer 4 · answered Dec 20 '12 at 08:40

0

Try setting it in application:didFinishLaunchingWithOptions: if your tabbar controller is rootViewController like

`[self.window.rootViewController.tabBarController setSelectedIndex:3];`

answered Dec 20 '12 at 08:40

Rahul Wakade

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score 0 · Answer 5 · answered Dec 21 '12 at 08:23

I have done something hackish in the past. I have found in order for each tab to become active, in my applicationDidFinishLaunching, I need to loop through all my view controllers then access the "view" property:

for(viewController in arrayOfViewController)
{
    // will load the view controller into memory
    [viewController view];
}

Don't know if you can make any use of it.

score -1 · Answer 6 · edited Aug 23 '23 at 19:59

I think if you use tab bar controller you can do those steps. It worked on my project.

Create a tab bar controller
Create new Cocoatouch Class
Write this code:

import UIKit
import Foundation

class CustomTabBarController: UITabBarController {
   
    @IBInspectable var initialIndex = 2

    override func viewDidLoad() {
        super.viewDidLoad()
        
        selectedIndex = initialIndex
    }

}

I chose the 3rd tab bar, but you can change initialIndex as you wish.

Open the app in a specific tab in tabbar

6 Answers6