How to get rid of the delay of changing the color of the Navigation Bar when moving to the previous screen?

Question

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)

    self.navigationController?.navigationBar.setBackgroundImage(UIImage(), for: .default)
    self.navigationController?.navigationBar.shadowImage = UIImage()
    self.navigationController?.navigationBar.isTranslucent = true
    self.tabBarController?.tabBar.isHidden = true
}

override func viewWillDisappear(_ animated: Bool) {
    super.viewWillDisappear(animated)
    self.navigationController?.navigationBar.setBackgroundImage(nil, for: .default)
    self.navigationController?.navigationBar.shadowImage = nil
    self.tabBarController?.tabBar.isHidden = false
}

After tap on back(NavBar) I see a delay(1.5 s). I don't understand why.

Try to use `viewDidDisappear` instead of `viewWillDisappear`. — Nirav D, Aug 02 '18 at 09:51
you need to check this out https://stackoverflow.com/questions/39511088/navigationbar-coloring-in-viewwillappear-happens-too-late-in-ios-10/40377268#40377268 — Negar, Jun 22 '19 at 09:35

score 0 · Answer 1 · answered Aug 02 '18 at 10:47

0

Func willMove from docs help me.

answered Aug 02 '18 at 10:47

Aleksandr Maybach

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How to get rid of the delay of changing the color of the Navigation Bar when moving to the previous screen?

1 Answers1