swift show and hide Navigation Bar

Question

I want to create : show view without Navigation Bar, and when I scrolling if distance from top >= 100 height and to the bottom show Navigation Bar.

When scroll from bottom : if distance to top <= 100 height need to hideNavigation Bar Im try this, but it did not help me

func scrollViewWillEndDragging(_ scrollView: UIScrollView, withVelocity velocity: CGPoint, targetContentOffset: UnsafeMutablePointer<CGPoint>) { if(velocity.y>0) { UIView.animate(withDuration: 2.5, delay: 0, options: UIViewAnimationOptions(), animations: { self.navigationController?.setNavigationBarHidden(true, animated: true) }, completion: nil) } else { UIView.animate(withDuration: 2.5, delay: 0, options: UIViewAnimationOptions(), animations: { self.navigationController?.setNavigationBarHidden(false, animated: true) }, completion: nil) } }

Yash Bhikadiya · Accepted Answer · 2018-09-15 12:44:51Z

The function that you need you can do with scrollViewDidScroll. I have implemented and tested and its working properly.

func scrollViewDidScroll(_ scrollView: UIScrollView) { print("scroll Content : \(scrollView.contentOffset.y)") if scrollView.contentOffset.y >= 100 { UIView.animate(withDuration: 2.5, animations: { self.navigationController?.setNavigationBarHidden(true, animated: true) }) } else { UIView.animate(withDuration: 2.5, animations: { self.navigationController?.setNavigationBarHidden(false, animated: true) }) } }

in viewDidLoad() you can hide the navigationbar so when you open app that time navigationbar is hidden.

Hope this will help you.

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