CODEWITHSUNDEEP
iosiphoneswiftuinavigationbar
Peter Pik
Peter Pik

Reputation: 11193

How to remove border of the navigationBar in swift?

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 work in my case.

My code

    self.navigationController?.navigationBar.barTintColor = UIColor(rgba: "#4a5866")
    self.navigationController?.navigationBar.setBackgroundImage(UIImage(named: ""), forBarMetrics: UIBarMetrics.Default)
    self.navigationController?.navigationBar.shadowImage = UIImage(named: "")

illustration:

enter image description here

Upvotes: 159

Views: 116231

Answers (29)

RoadWarrior
RoadWarrior

Reputation: 86

I am using Xcode 14.2. If you want to do this using Xcode UI, then select the Navigation controller, then Navigation Bar, then Attributes Inspector and Under Scroll Edge Appearance, set the Shadow Color to clear color.

enter image description here

Upvotes: 1

Jameel Shehadeh
Jameel Shehadeh

Reputation: 1

I found changing the navigation bar shadow color to Clear from the activity inspector to solve this issue

[changing the navigation bar shadow color****strong text][1]

[1]: https://i.sstatic.net/i3Kdo.png***strong text***

Upvotes: -2

Drew
Drew

Reputation: 739

For iOS 13+:

let appearance = UINavigationBarAppearance()
appearance.shadowColor = .clear

Assign this appearance to the UINavigationBar:

navigationController?.navigationBar.standardAppearance = appearance
navigationController?.navigationBar.scrollEdgeAppearance = appearance
navigationController?.navigationBar.compactAppearance = appearance

Setting shadowImage = UIImage() didn't work for me.

Upvotes: 20

Dmytro Yashchenko
Dmytro Yashchenko

Reputation: 921

I use this code in AppDelegate's didFinishLaunchingWithOptions method to reach it in whole app:

 let barAppearance = UINavigationBar.appearance()
    
 if #available(iOS 13, *) {
     let appearance = UINavigationBarAppearance()
     appearance.configureWithTransparentBackground()
     barAppearance.standardAppearance = appearance
     barAppearance.scrollEdgeAppearance = appearance
 } else {
     barAppearance.setBackgroundImage(UIImage(), for: UIBarPosition.any, barMetrics: UIBarMetrics.defaultPrompt)
     barAppearance.shadowImage = UIImage()
 }

Upvotes: 1

GIJoeCodes
GIJoeCodes

Reputation: 1850

let navBarAppearance = UINavigationBarAppearance()
navBarAppearance.configureWithTransparentBackground()

Upvotes: 32

Mickael Belhassen
Mickael Belhassen

Reputation: 3342

Swiftier method of Jack Chen:

extension UINavigationController {

    var isHiddenHairline: Bool {
        get {
            guard let hairline = findHairlineImageViewUnder(navigationBar) else { return true }
            return hairline.isHidden
        }
        set {
            if let hairline = findHairlineImageViewUnder(navigationBar) {
                hairline.isHidden = newValue
            }
        }
    }

    private 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
    }
}

Using:

    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        navigationController?.isHiddenHairline = true
    }

    override func viewWillDisappear(_ animated: Bool) {
        super.viewWillDisappear(animated)
        navigationController?.isHiddenHairline = false
    }

Upvotes: 10

Jack Chen
Jack Chen

Reputation: 518

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
    }
}

Upvotes: 32

Mr Zee
Mr Zee

Reputation: 97

in your custom navigationController add these lines: 

self.navigationBar.setBackgroundImage(UIImage(), for:.default)
self.navigationBar.shadowImage = UIImage()
self.navigationBar.layoutIfNeeded()

Important Note

the last line is important if you use the first line viewDidLoad() method because navigationController should redraw nav bar but easily you can use this without layoutIfNeeded() in the viewWillAppear() method before it draws the nav bar

Upvotes: 2

Sazzad Hissain Khan
Sazzad Hissain Khan

Reputation: 40136

Swift 4 & Swift 5

Removing border:

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

Restoring border:

self.navigationController?.navigationBar.setBackgroundImage(nil, for:.default)
self.navigationController?.navigationBar.shadowImage = nil
self.navigationController?.navigationBar.layoutIfNeeded()

Upvotes: 73

Gaurav Chandarana
Gaurav Chandarana

Reputation: 754

Just write this in the extension of UINavigationBar

extension UINavigationBar {

    func shouldRemoveShadow(_ value: Bool) -> Void {
        if value {
            self.setValue(true, forKey: "hidesShadow")
        } else {
            self.setValue(false, forKey: "hidesShadow")
        }
    }
}

And in your viewController...

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
    self.navigationController?.navigationBar.shouldRemoveShadow(true)        
}

And to get this undone for any viewController, just pass false.

Upvotes: 40

Mihail Salari
Mihail Salari

Reputation: 1571

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!

Upvotes: 3

Srinivasan_iOS
Srinivasan_iOS

Reputation: 1078

App delegate

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

Upvotes: 1

Lance Samaria
Lance Samaria

Reputation: 19572

The accepted answer worked for me but I noticed when I wanted the shadow image to reappear when popping back or pushing forward to another vc there was a noticeable blink in the navigation bar.

Using this method navigationController?.navigationBar.setValue(true, forKey: "hidesShadow") in viewWillAppear the shadow bar is hidden in the current visible view controller.

Using these 2 methods 

navigationController?.navigationBar.setBackgroundImage(nil, for: .default)
navigationController?.navigationBar.setValue(false, forKey: "hidesShadow")

in viewWillDisappear the blink still happens but only when the shadow image reappears and not the navigation bar itself.

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

    // 1. hide the shadow image in the current view controller you want it hidden in
    navigationController?.navigationBar.setValue(true, forKey: "hidesShadow")
    navigationController?.navigationBar.layoutIfNeeded()
}

override func viewWillDisappear(_ animated: Bool) {
    super.viewWillDisappear(true)

    // 2. show the shadow image when pushing or popping in the next view controller. Only the shadow image will blink
    navigationController?.navigationBar.setBackgroundImage(nil, for: .default)
    navigationController?.navigationBar.setValue(false, forKey: "hidesShadow")
    navigationController?.navigationBar.layoutIfNeeded()
}

Upvotes: 3

Scott Gardner
Scott Gardner

Reputation: 8739

This is a streamlined version of Gaurav Chandarana's answer.

extension UINavigationBar {

    func hideShadow(_ value: Bool = true) {
        setValue(value, forKey: "hidesShadow")
    }
}

Upvotes: 1

BilalReffas
BilalReffas

Reputation: 8328

iOS 11 and Swift 4 You should try following if you want to remove the border but don't to make the navigitonbar translucent
self.navigationBar.shadowImage = UIImage()

Upvotes: 0

Mauricio Chirino
Mauricio Chirino

Reputation: 1232

Updated for Swift 4 in case someone is wondering 

navigationBar.shadowImage = UIImage()
navigationBar.backIndicatorImage = UIImage()

It's even less verbose now.

Upvotes: 6

reza_khalafi
reza_khalafi

Reputation: 6534

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

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

Upvotes: 9

Nate Cook
Nate Cook

Reputation: 93276

The trouble is with these two lines:

self.navigationController?.navigationBar.setBackgroundImage(UIImage(named: ""), forBarMetrics: UIBarMetrics.Default)
self.navigationController?.navigationBar.shadowImage = UIImage(named: "")

Since you don't have an image with no name, UIImage(named: "") returns nil, which means the default behavior kicks in:

When non-nil, a custom shadow image to show instead of the default shadow image. For a custom shadow to be shown, a custom background image must also be set with -setBackgroundImage:forBarMetrics: (if the default background image is used, the default shadow image will be used).

You need a truly empty image, so just initialize with UIImage():

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

Upvotes: 361

Zaid Pathan
Zaid Pathan

Reputation: 16820

Only this worked for me,

self.navigationController?.navigationBar.shadowImage = UIImage()

Ref

Upvotes: 8

Gulz
Gulz

Reputation: 1813

for swift 3

in viewDidLoad method 

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

Upvotes: 7

Chetan Dobariya
Chetan Dobariya

Reputation: 812

for the swift3 you should write slightly different way: 

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

Upvotes: 1

Alan
Alan

Reputation: 329

this is the answer in swift 3 base of Nate Cook answer 

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

Upvotes: 0

David Baez
David Baez

Reputation: 1238

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.

Upvotes: 10

Jorge Casariego
Jorge Casariego

Reputation: 22212

With Swift 2 you can do it this way:

AppDelegate file

Inside func application(..., didFinishLaunchingWithOptions launchOptions:...)

UINavigationBar.appearance().shadowImage = UIImage()
UINavigationBar.appearance().setBackgroundImage(UIImage(), forBarMetrics: .Default)

for Swift 3:

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

Upvotes: 42

David West
David West

Reputation: 1590

Within AppDelegate, this has globally changed the format of the NavBar and removes the bottom line/border:

 func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {

    UINavigationBar.appearance().setBackgroundImage(UIImage(), forBarPosition: UIBarPosition.Any, barMetrics: UIBarMetrics.Default)
    UINavigationBar.appearance().shadowImage = UIImage()
    UINavigationBar.appearance().tintColor = UIColor.whiteColor()
    UINavigationBar.appearance().barTintColor = UIColor.redColor()
    UINavigationBar.appearance().translucent = false
    UINavigationBar.appearance().clipsToBounds = false
    //UINavigationBar.appearance().backgroundColor = UIColor.redColor()
    UINavigationBar.appearance().titleTextAttributes = [NSFontAttributeName : (UIFont(name: "FONT NAME", size: 18))!, NSForegroundColorAttributeName: UIColor.whiteColor()] }

Haven't managed to implement anything different on a specific VC, but this will help 90% of people

Upvotes: 2

bachman
bachman

Reputation: 690

The border line is an UIImageView and removing a subview which is an imageView will remove barButtonItems with UIImageView. Below code will help you remove it. Hope this helps someone who faced an issue like me.

for parent in self.navigationController!.navigationBar.subviews {
        for childView in parent.subviews {
            if childView.frame.height == 0.5 {
                childView.removeFromSuperview()
            }
        }
    }

The border UIImageView is only 0.5 in height so this code removes only that.

Upvotes: 0

Steve Payne
Steve Payne

Reputation: 593

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()
     }
 }
}

Upvotes: 38

gpbl
gpbl

Reputation: 4804

Set barStyle to .Black before setting the tint:

self.navigationController?.navigationBar.translucent = false
self.navigationController?.navigationBar.barStyle = .Black
self.navigationController?.navigationBar.barTintColor = UIColor.blueColor()

Upvotes: 14

Yariv Nissim
Yariv Nissim

Reputation: 13343

This is the way if you want to do it without changing the background color:

// Remove the border ImageView from the NavigationBar background
func hideBottomBorder() {
    for view in navigationBar.subviews.filter({ NSStringFromClass($0.dynamicType) == "_UINavigationBarBackground" }) as [UIView] {
        if let imageView = view.subviews.filter({ $0 is UIImageView }).first as? UIImageView {
            imageView.removeFromSuperview()
        }
    }
}

NOTE: This might crash on a production app. Apparently the NavigationBar doesn't like its view disappearing

Upvotes: 2

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