How to remove border of the navigationBar in swift?

Question

i\'ve been trying to remove the navigationBars border without luck. I\'ve researched and people seem to tell to set shadowImage and BackgroundImage to nil, but this does not

Answer 1

Luca Davanzo's answer is great, but it does not work in iOS 10. I altered it to work in iOS 10 and below.

for parent in navigationController!.view.subviews {
    for child in parent.subviews {
        for view in child.subviews { 
            if view is UIImageView && view.frame.height == 0.5 {
                view.alpha = 0
            }
        }
    }
}

You can also extend UINavigationController and call this off of that. removeFromSuperview() on the line will not work on iOS 10, so I just set the alpha to 0 so this one call is compatible everywhere.

Answer 2

If you want to remove only the bottom line and keep the solid color of navigationBar, add these lines of code in viewDidLoad: Swift 3, 4:

navigationController?.navigationBar.shadowImage = UIImage()
navigationController?.navigationBar.isTranslucent = false

Peace!

Answer 3

Swift 5

When using setBackgroundImage / shadowImage to hide the hairline, there's a slight delay. This method removes the delay. Credit to Chameleon Framework. This is the method they use (in ObjC)

extension UINavigationController {
    func hideHairline() {
        if let hairline = findHairlineImageViewUnder(navigationBar) {
            hairline.isHidden = true
        }
    }
    func restoreHairline() {
        if let hairline = findHairlineImageViewUnder(navigationBar) {
            hairline.isHidden = false
        }
    }
    func findHairlineImageViewUnder(_ view: UIView) -> UIImageView? {
        if view is UIImageView && view.bounds.size.height <= 1.0 {
            return view as? UIImageView
        }
        for subview in view.subviews {
            if let imageView = self.findHairlineImageViewUnder(subview) {
                return imageView
            }
        }
        return nil
    }
}

Answer 4

for swift 3

in viewDidLoad method

navigationController?.navigationBar.setBackgroundImage(UIImage(), for: .default)
navigationController?.navigationBar.shadowImage = UIImage()

Answer 5

this will remove the shadow image altogether

for parent in self.navigationController!.navigationBar.subviews {
 for childView in parent.subviews {
     if(childView is UIImageView) {
         childView.removeFromSuperview()
     }
 }
}

Answer 6

To remove border from UINavigationBar in Swift 3+, use:

UINavigationBar.appearance().shadowImage = UIImage()
UINavigationBar.appearance().setBackgroundImage(UIImage(), for: .default)
UINavigationBar.appearance().isTranslucent = false