Problem with using UIApplication.shared.keyWindow?.rootViewController

Asked Nov 14 '18 at 06:05

Active Nov 14 '18 at 10:20

Viewed 203 times

In my app I use this code:

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    let mainTabBarController =  UIApplication.shared.keyWindow?.rootViewController as? MainTabBarController
    mainTabBarController?.maximizePlayerDetails()
}

When I launce the app tapped by cell in Table, use some func maximizePlayerDetails from another class MainTabBarController, everything works fine. But when I signOut from app and then signIn again this method doesn't work(UIView doesn't appear). What's the problem?

edited Nov 14 '18 at 10:20

Eric Aya

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asked Nov 14 '18 at 06:05

Stanislav Putilov

You would need to show your `maximizePlayerDetails` method and if it is a method you would need `()` at the end of it. – Rakesha Shastri Nov 14 '18 at 06:17
put the breakpoint and debug, may be after logout the rootViewController changed and not the type of MainTabBarController. – guru Nov 14 '18 at 06:21
@RakeshaShastri , you are right I forgot to add (), but have it in my code – Stanislav Putilov Nov 14 '18 at 06:22
@guru how can I check what rootViewController used after logout? – Stanislav Putilov Nov 14 '18 at 07:32
you can debug you code and put breakpoint and then print description of UIApplication.shared.keyWindow?.rootViewController to check what it returns after logout – guru Nov 14 '18 at 08:07
@guru ok, I'll check it, thanks. How can I put the same rootViewController after logout in case if it will be the different – Stanislav Putilov Nov 14 '18 at 08:30
Simple UIApplication.shared.keyWindow?.rootViewController = yourviewController – guru Nov 14 '18 at 09:07

Problem with using UIApplication.shared.keyWindow?.rootViewController

0 Answers0