Prevent automatic popToRootViewController on double-tap of UITabBarController

user_457 0
Viewed 10143

The default behavior of a UITabBarController is to pop the contained UINavigationController to the root view controller when a particular tab is tapped a second time. I have a particular use case where I'm wanting this to not work automatically, and I'm having a hard time figuring out how to prevent this.

Has anyone run into this, and if so, what did you do? Do I need to subclass UINavigationController and override popToRootViewController or is there a simpler way?

uinavigationcontroller uitabbarcontroller iphone
5 Answers

Update Swift 4.1

Stop Double Tap for all tabs.

extension TabBarController: UITabBarControllerDelegate {
func tabBarController(_ tabBarController: UITabBarController, shouldSelect viewController: UIViewController) -> Bool {
    //for blocking double tap on all tabs.
    return viewController != tabBarController.selectedViewController
}}

Stop Double Tap on only one specific tab. Here it's for 3rd Tab.

extension TabBarController: UITabBarControllerDelegate {
func tabBarController(_ tabBarController: UITabBarController, shouldSelect viewController: UIViewController) -> Bool {
    //for blocking double tap on 3rd tab only
    let indexOfNewVC = tabBarController.viewControllers?.index(of: viewController)
    return ((indexOfNewVC != 2) ||
        (indexOfNewVC != tabBarController.selectedIndex))       
}}

Hope it helps...

Thanks!!!

user_16708250
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