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Editorial Team
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Asked: 2026-05-23T13:02:01+00:00

I am making a view based application in which the first controller is viewcontroller

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I am making a view based application in which the first controller is viewcontroller there is login screen ,after login the next view is tabbar controller and I have 2 tabbar items on that tabbar .
Until this everything works fine . Now when i switch between these two views the viewWillDisappear, viewDidUnload is not called of previous tab clicked .

P.S.Even the viewwillAppear was not called ,which i called it with the Default Notification. Don’t know what the issues are. Hope I am clear with my question.

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1 Answer

  1. Editorial Team

    First of all, when switching view in a UITabBarController, the viewDidUnload function is not called because the view is not actually unloaded. So, this is normal.

    What should work out of the box is viewWillAppear/viewDidDisappear. But there is a catch.
    Depending on how you show your views, it might be that viewWillAppear/viewDidDisappear are not called by the framework for you. For example, this happens if you add your view as a subview, but there are more cases. I don’t know how you display your tab bar, so cannot say anything more specific about it.

    The easy solution I suggest to fix this is overriding the tabBarController:didSelectViewController: selector in you tab bar controller delegate. From there you could implement you own logic or call viewDidDisappear.

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