tabBarController didSelect does not get called

user_9407365 0
Viewed 2985

I am having a problem with

tabBarController(_ tabBarController: UITabBarController, didSelect viewController: UIViewController)

delegate firing. The problem lies when I try to use self.tabBarController?.selectedIndex and change a tab programmatically. Once I use selectedIndex and go back to a previous tab and click on the tabBarItem the delegate does not fire anymore. Delegate only fires if I do not use selectedIndex but once i use it the didSelect delegate never fires again even if I tap on the tabBar item. Any suggestions? Thanks for your help!

uitabbarcontroller ios
3 Answers

You need to call delegate programmatically like below For eg. I need to select SettingsTab which is at 4th index, i can achieve using this code. Here didSelect is also called programmatically

if let tabbarC = self.tabBarController{
        tabbarC.selectedIndex = 4
        let setting = tabbarC.viewControllers![4]
        self.tabBarController(tabbarC, didSelect: setting)

}

Hope this helps!

user_11113970

Tabbar delegate is called only in response to user taps in the tab bar and is not called when your code changes the tab bar contents programmatically.

user_59401010

Anyone who had the issue with UITabBarController delegate with Hero. the problem is with Hero transition delegate and solution is to put your tabBarController in a ViewController as a container. Then setup Hero on the container and problem solves.

tabBarController.viewControllers = [...]
let container = UIViewController()
container.addChild(tabBarController)
container.view.addSubview(tabBarController.view)
tabBarController.didMove(toParent: container)
tabBarController.view.frame = CGRect(x: 0, y: 0, width: container.view.frame.width, height: container.view.frame.height)
container.modalPresentationStyle = .fullScreen
container.hero.isEnabled = true
container.modalAnimationType = .slide(direction: .left)
rootViewController.present(container, animated: true, completion: nil)
user_78618860
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