I have an app that sometimes needs its navigation bar to blend in with the content.
Does anyone know how to get rid of or to change color of this annoying little bar?
On the image below situation i have - i'm talking about this 1px height line below "Root View Controller"
Use the .shadowColor property
If this property is nil or contains the clear color, the bar displays no shadow
For instance:
let navigationBar = navigationController?.navigationBar
let navigationBarAppearance = UINavigationBarAppearance()
navigationBarAppearance.shadowColor = .clear
navigationBar?.scrollEdgeAppearance = navigationBarAppearance
To do this, you should set a custom shadow image. But for the shadow image to be shown you also need to set a custom background image, quote from Apple's documentation:
For a custom shadow image to be shown, a custom background image must also be set with the setBackgroundImage(_:for:) method. If the default background image is used, then the default shadow image will be used regardless of the value of this property.
So:
let navigationBar = navigationController!.navigationBar
navigationBar.setBackgroundImage(#imageLiteral(resourceName: "BarBackground"),
for: .default)
navigationBar.shadowImage = UIImage()
Above is the only "official" way to hide it. Unfortunately, it removes bar's translucency.
You have those options:
Solid color, no translucency:
navigationBar.barTintColor = UIColor.redColor()
navigationBar.isTranslucent = false
navigationBar.setBackgroundImage(UIImage(), for: .default)
navigationBar.shadowImage = UIImage()
Create small background image filled with color and use it.
Use 'hacky' method described below. It will also keep bar translucent.
To keep translucency you need another approach, it looks like a hack but works well. The shadow we're trying to remove is a hairline UIImageView somewhere under UINavigationBar. We can find it and hide/show it when needed.
Instructions below assume you need hairline hidden only in one controller of your UINavigationController hierarchy.
Declare instance variable:
private var shadowImageView: UIImageView?
Add method which finds this shadow (hairline) UIImageView:
private func findShadowImage(under view: UIView) -> UIImageView? {
if view is UIImageView && view.bounds.size.height <= 1 {
return (view as! UIImageView)
}
for subview in view.subviews {
if let imageView = findShadowImage(under: subview) {
return imageView
}
}
return nil
}
Add/edit viewWillAppear/viewWillDisappear methods:
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
if shadowImageView == nil {
shadowImageView = findShadowImage(under: navigationController!.navigationBar)
}
shadowImageView?.isHidden = true
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
shadowImageView?.isHidden = false
}
The same method should also work for UISearchBar hairline,
and (almost) anything else you need to hide :)
Many thanks to @Leo Natan for the original idea!
UINavigationBar property: clipsToBounds = YES –
Squawk clipsToBounds = YES works like a charm! Thanks! –
Anoint viewWillAppear is called we cannot get shadowImageView –
Adapa clipsToBounds = YES will also clip the upper part of the navigation bar, exposing the background of the status bar, which can get problematic if your navigationBar has a custom color. –
Abba if #available(iOS 13.0, *) { let appearance = UINavigationBarAppearance() appearance.shadowColor = nil navigationController.navigationBar.standardAppearance = appearance } –
Thermae navigationBar.standardAppearance.shadowColor = .clear –
Lolly scrollEdgeAppearance doesn't work on iOS 13.5. Setting clipToBounds = true does, but makes the background color slightly (but noticeably) different from the status bar color, even though I used the default color. Using standardAppearance does remove the separator, and preserves background color. –
Gamble Here is the hack. Since it works on key paths might break in the future. But for now it works as expected.
Swift:
self.navigationController?.navigationBar.setValue(true, forKey: "hidesShadow")
Objective C:
[self.navigationController.navigationBar setValue:@(YES) forKeyPath:@"hidesShadow"];
If you just want to use a solid navigation bar color and have set this up in your storyboard, use this code in your AppDelegate class to remove the 1 pixel border via the appearance proxy:
[[UINavigationBar appearance] setBackgroundImage:[[UIImage alloc] init]
forBarPosition:UIBarPositionAny
barMetrics:UIBarMetricsDefault];
[[UINavigationBar appearance] setShadowImage:[[UIImage alloc] init]];
Try this:
[[UINavigationBar appearance] setBackgroundImage: [UIImage new]
forBarMetrics: UIBarMetricsDefault];
[UINavigationBar appearance].shadowImage = [UIImage new];
Below image has the explanation (iOS7 NavigationBar):
And check this SO question: iOS7 - Change UINavigationBar border color
The swift way to do it:
UINavigationBar.appearance().setBackgroundImage(UIImage(), for: .any, barMetrics: .default)
UINavigationBar.appearance().shadowImage = UIImage()
Wanted to add the Swift version of Serhii's answer. I created a UIBarExtension.swift with the following:
import Foundation
import UIKit
extension UINavigationBar {
func hideBottomHairline() {
self.hairlineImageView?.isHidden = true
}
func showBottomHairline() {
self.hairlineImageView?.isHidden = false
}
}
extension UIToolbar {
func hideBottomHairline() {
self.hairlineImageView?.isHidden = true
}
func showBottomHairline() {
self.hairlineImageView?.isHidden = false
}
}
extension UIView {
fileprivate var hairlineImageView: UIImageView? {
return hairlineImageView(in: self)
}
fileprivate func hairlineImageView(in view: UIView) -> UIImageView? {
if let imageView = view as? UIImageView, imageView.bounds.height <= 1.0 {
return imageView
}
for subview in view.subviews {
if let imageView = self.hairlineImageView(in: subview) { return imageView }
}
return nil
}
}
Simple solution in swift
let navigationBar = self.navigationController?.navigationBar
navigationBar?.setBackgroundImage(UIImage(), forBarPosition: UIBarPosition.Any, barMetrics: UIBarMetrics.Default)
navigationBar?.shadowImage = UIImage()
Can also be hidden from Storyboard (working on Xcode 10.1)
By adding runtime attribute: hidesShadow - Boolean - True
As of iOS 13 there is a system API to set or remove the shadow
UIKit uses shadowImage and the shadowColor property to determine the shadow's appearance. When shadowImage is nil, the bar displays a default shadow tinted according to the value in the shadowColor property. If shadowColor is nil or contains the clearColor color, the bar displays no shadow.
let appearance = UINavigationBarAppearance()
appearance.shadowImage = nil
appearance.shadowColor = nil
navigationController.navigationBar.standardAppearance = appearance
https://developer.apple.com/documentation/uikit/uibarappearance/3198009-shadowimage
UINavigationBarAppearance headers!! I'd never find it. Thanks, this solved my issues 100% –
Copeland After studying the answer from Serhil, I created a pod UINavigationBar+Addition that can easily hide the hairline.
#import "UINavigationBar+Addition.h"
- (void)viewDidLoad {
[super viewDidLoad];
UINavigationBar *navigationBar = self.navigationController.navigationBar;
[navigationBar hideBottomHairline];
}
In Swift 3.0
Edit your AppDelegate.swift by adding the following code to your application function:
// Override point for customization after application launch.
// Remove border in navigationBar
UINavigationBar.appearance().shadowImage = UIImage()
UINavigationBar.appearance().setBackgroundImage(UIImage(), for: .default)
Swift 4 //for hiding navigation bar shadow line
navigationController?.navigationBar.shadowImage = UIImage()
pxpgraphics' solution updated for Swift 2.0
extension UINavigationBar {
func hideBottomHairline()
{
hairlineImageViewInNavigationBar(self)?.hidden = true
}
func showBottomHairline()
{
hairlineImageViewInNavigationBar(self)?.hidden = false
}
private func hairlineImageViewInNavigationBar(view: UIView) -> UIImageView?
{
if let imageView = view as? UIImageView where imageView.bounds.height <= 1
{
return imageView
}
for subview: UIView in view.subviews
{
if let imageView = hairlineImageViewInNavigationBar(subview)
{
return imageView
}
}
return nil
}
}
extension UIToolbar
{
func hideHairline()
{
let navigationBarImageView = hairlineImageViewInToolbar(self)?.hidden = true
}
func showHairline()
{
let navigationBarImageView = hairlineImageViewInToolbar(self)?.hidden = false
}
private func hairlineImageViewInToolbar(view: UIView) -> UIImageView?
{
if let imageView = view as? UIImageView where imageView.bounds.height <= 1
{
return imageView
}
for subview: UIView in view.subviews
{
if let imageView = hairlineImageViewInToolbar(subview)
{
return imageView
}
}
return nil
}
}
UINavigationController().navigationBar/toolbar.hide/showBottomHairline() then no? I'm trying this but to no avail. Am I not understanding correctly? –
Ambie Swift 4 Tested ONE LINE SOLUTION
In Viewdidload()
Set Navigation controller's userdefault value true for key "hidesShadow"
override func viewDidLoad() {
super.viewDidLoad()
self.navigationController?.navigationBar.setValue(true, forKey: "hidesShadow")
}
I use a UINavigationBar extension that enables me to hide/show that shadow using the UIAppearance API or selecting which navigation bar has to hide/show that shadow using Storyboard (or source code). Here is the extension:
import UIKit
private var flatAssociatedObjectKey: UInt8 = 0
/*
An extension that adds a "flat" field to UINavigationBar. This flag, when
enabled, removes the shadow under the navigation bar.
*/
@IBDesignable extension UINavigationBar {
@IBInspectable var flat: Bool {
get {
guard let obj = objc_getAssociatedObject(self, &flatAssociatedObjectKey) as? NSNumber else {
return false
}
return obj.boolValue;
}
set {
if (newValue) {
let void = UIImage()
setBackgroundImage(void, forBarPosition: .Any, barMetrics: .Default)
shadowImage = void
} else {
setBackgroundImage(nil, forBarPosition: .Any, barMetrics: .Default)
shadowImage = nil
}
objc_setAssociatedObject(self, &flatAssociatedObjectKey, NSNumber(bool: newValue),
objc_AssociationPolicy.OBJC_ASSOCIATION_RETAIN_NONATOMIC)
}
}
}
Now, to disable the shadow across all navigation bars you have to use:
UINavigationBar.appearance().flat = true
Or you can enable/disable this behavior using storyboards:
flatAssociatedObjectKey as an unique int (treated as pointer) to identify your associated object. Here is defined by the memory address of a private var. I updated the response to add this var. See nshipster.com/associated-objects for more info. –
Anking translucent to false –
Hakon For iOS 13+
The trick is to initialize 'UINavigationBarAppearance' with TransparentBackground. Then you could easily remove the horizontal line of the navigation bar.
let appearance = UINavigationBarAppearance()
appearance.configureWithTransparentBackground()
appearance.backgroundColor = .green // Required background color
Finally, add the appearance changes to the navigation item as the apple suggested.
self.navigationItem.standardAppearance = appearance
self.navigationItem.scrollEdgeAppearance = appearance
self.navigationItem.compactAppearance = appearance
Another option if you want to preserve translucency and you don't want to subclass every UINavigationController in your app:
#import <objc/runtime.h>
@implementation UINavigationController (NoShadow)
+ (void)load {
Method original = class_getInstanceMethod(self, @selector(viewWillAppear:));
Method swizzled = class_getInstanceMethod(self, @selector(swizzled_viewWillAppear:));
method_exchangeImplementations(original, swizzled);
}
+ (UIImageView *)findHairlineImageViewUnder:(UIView *)view {
if ([view isKindOfClass:UIImageView.class] && view.bounds.size.height <= 1.0) {
return (UIImageView *)view;
}
for (UIView *subview in view.subviews) {
UIImageView *imageView = [self findHairlineImageViewUnder:subview];
if (imageView) {
return imageView;
}
}
return nil;
}
- (void)swizzled_viewWillAppear:(BOOL)animated {
UIImageView *shadow = [UINavigationController findHairlineImageViewUnder:self.navigationBar];
shadow.hidden = YES;
[self swizzled_viewWillAppear:animated];
}
@end
Swift put this
UINavigationBar.appearance().setBackgroundImage(UIImage(), forBarPosition: .Any, barMetrics: .Default)
UINavigationBar.appearance().shadowImage = UIImage()
in
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool
Slightly Swift Solution
func setGlobalAppearanceCharacteristics () {
let navigationBarAppearace = UINavigationBar.appearance()
navigationBarAppearace.tintColor = UIColor.white
navigationBarAppearace.barTintColor = UIColor.blue
navigationBarAppearace.setBackgroundImage(UIImage(), for: UIBarMetrics.default)
navigationBarAppearace.shadowImage = UIImage()
}
Here's a very simple solution:
self.navigationController.navigationBar.clipsToBounds = YES;
Two lines solution that works for me. Try to add this in ViewDidLoad method:
navigationController?.navigationBar.setValue(true, forKey: "hidesShadow")
self.extendedLayoutIncludesOpaqueBars = true
In iOS8, if you set the UINavigationBar.barStyle to .Black you can set the bar's background as plain color without the border.
In Swift:
UINavigationBar.appearance().translucent = false
UINavigationBar.appearance().barStyle = UIBarStyle.Black
UINavigationBar.appearance().barTintColor = UIColor.redColor()
Solution in Swift 4.2:
private func removeHairlineFromNavbar() {
UINavigationBar.appearance().setBackgroundImage(
UIImage(),
for: .any,
barMetrics: .default)
UINavigationBar.appearance().shadowImage = UIImage()
}
Just put this function at the first Viewcontroller and call it in viewdidload
Create an extension:
extension UIImage {
class func hideNavBarLine(color: UIColor) -> UIImage? {
let rect = CGRect(x: 0, y: 0, width: 1, height: 1)
UIGraphicsBeginImageContext(rect.size)
let context = UIGraphicsGetCurrentContext()
context?.setFillColor(color.cgColor)
context?.fill(rect)
let navBarLine = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return navBarLine
}
}
Add this to viewDidLoad():
self.navigationController?.navigationBar.shadowImage = UIImage.hideNavBarLine(color: UIColor.clear)
The problem with setting a background image is it removes blurring. You can remove it without setting a background image. See my answer here.
For iOS 9 users, this worked for me. just add this:
UINavigationBar.appearance().shadowImage = UIImage()
pxpgraphics's answer for Swift 3.0.
import Foundation
import UIKit
extension UINavigationBar {
func hideBottomHairline() {
let navigationBarImageView = hairlineImageViewInNavigationBar(view: self)
navigationBarImageView!.isHidden = true
}
func showBottomHairline() {
let navigationBarImageView = hairlineImageViewInNavigationBar(view: self)
navigationBarImageView!.isHidden = false
}
private func hairlineImageViewInNavigationBar(view: UIView) -> UIImageView? {
if view is UIImageView && view.bounds.height <= 1.0 {
return (view as! UIImageView)
}
let subviews = (view.subviews as [UIView])
for subview: UIView in subviews {
if let imageView: UIImageView = hairlineImageViewInNavigationBar(view: subview) {
return imageView
}
}
return nil
}
}
extension UIToolbar {
func hideHairline() {
let navigationBarImageView = hairlineImageViewInToolbar(view: self)
navigationBarImageView!.isHidden = true
}
func showHairline() {
let navigationBarImageView = hairlineImageViewInToolbar(view: self)
navigationBarImageView!.isHidden = false
}
private func hairlineImageViewInToolbar(view: UIView) -> UIImageView? {
if view is UIImageView && view.bounds.height <= 1.0 {
return (view as! UIImageView)
}
let subviews = (view.subviews as [UIView])
for subview: UIView in subviews {
if let imageView: UIImageView = hairlineImageViewInToolbar(view: subview) {
return imageView
}
}
return nil
}
}
You should add a view to a bottom of the UISearchBar
let rect = searchController.searchBar.frame;
let lineView : UIView = UIView.init(frame: CGRect.init(x: 0, y: rect.size.height-1, width: rect.size.width, height: 1))
lineView.backgroundColor = UIColor.init(hexString: "8CC73E")
searchController.searchBar.addSubview(lineView)
I Just created an extension for this... Sorry about formatting (this is my first answer).
Usage:
override func viewDidLoad() {
super.viewDidLoad()
self.navigationController?.hideShadow = true
}
Extension:
UINavigationController.swift
// Created by Ricardo López Rey on 16/7/15.
import Foundation
struct UINavigationControllerExtension {
static var hideShadowKey : String = "HideShadow"
static let backColor = UIColor(red: 247/255, green: 247/255, blue: 248/255, alpha: 1.0)
}
extension UINavigationController {
var hideShadow : Bool {
get {
if let ret = objc_getAssociatedObject(self, &UINavigationControllerExtension.hideShadowKey) as? Bool {
return ret
} else {
return false
}
}
set {
objc_setAssociatedObject(self,&UINavigationControllerExtension.hideShadowKey,newValue, objc_AssociationPolicy(OBJC_ASSOCIATION_RETAIN_NONATOMIC))
if newValue {
self.navigationBar.setBackgroundImage(solidImage(UINavigationControllerExtension.backColor), forBarMetrics: UIBarMetrics.Default)
self.navigationBar.shadowImage = solidImage(UIColor.clearColor())
} else {
self.navigationBar.setBackgroundImage(nil, forBarMetrics: UIBarMetrics.Default)
}
}
}
private func solidImage(color: UIColor, size: CGSize = CGSize(width: 1,height: 1)) -> UIImage {
var rect = CGRectMake(0, 0, size.width, size.height)
UIGraphicsBeginImageContextWithOptions(size, false, 0)
color.setFill()
UIRectFill(rect)
var image: UIImage = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return image
}
}
-(void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
UIImage *emptyImage = [UIImage new];
self.navigationController.navigationBar.shadowImage = emptyImage;
[self.navigationController.navigationBar setBackgroundImage:emptyImage forBarMetrics:UIBarMetricsDefault];
}
Within AppDelegate, this has globally changed the format of the NavBar:
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
Objective C Answer to Above Question
// removing 1px line of navigation bar
[[UINavigationBar appearance] setBackgroundImage:[[UIImage alloc]init] forBarMetrics:UIBarMetricsDefault];
[[UINavigationBar appearance] setShadowImage:[[UIImage alloc] init]];
[[UINavigationBar appearance] setTranslucent:NO];
[[UINavigationBar appearance] setTintColor:[UIColor yourColor]];
In Swift 3 we do this way
For any view controller:
navigationBar.shadowImage = UIImage()
setBackgroundImage(UIImage(), for: .default)
For an entire app:
UINavigationBar.appearance().setBackgroundImage(UIImage(),barMetrics: .Default)
UINavigationBar.appearance().shadowImage = UIImage()
I ran into the same issue and none of the answers were truly satisfying. Here is my take for Swift3:
func hideNavigationBarLine() {
navigationController?.navigationBar.setBackgroundImage(UIImage(), for: .default)
navigationController?.navigationBar.shadowImage = UIImage()
}
Simply call this from within viewDidLoad().
Here is an way to do it without using any images, this is the only way that worked for me:
self.navigationController.navigationBar.layer.shadowOpacity = 0;
Unfortunately, you need to do this on every file where you want the line not to appear. There's no way to do it this way in appDelegate.
Edit:
Setting the shadowColor to nil isn't needed, this is the only line that you'll need.
if #available(iOS 13.0, *) {
let appearance = UINavigationBarAppearance()
appearance.backgroundColor = Colors.color_app
appearance.titleTextAttributes = [.foregroundColor : UIColor.white]
appearance.largeTitleTextAttributes = [.foregroundColor : UIColor.white]
appearance.shadowColor = .clear
appearance.shadowImage = UIImage()
UINavigationBar.appearance().tintColor = .white
UINavigationBar.appearance().standardAppearance = appearance
UINavigationBar.appearance().compactAppearance = appearance
UINavigationBar.appearance().scrollEdgeAppearance = appearance
} else {
UINavigationBar.appearance().barTintColor = Colors.color_app
UINavigationBar.appearance().tintColor = .white
UINavigationBar.appearance().titleTextAttributes = [NSAttributedString.Key.foregroundColor : UIColor.white]
if #available(iOS 11.0, *) {
UINavigationBar.appearance().largeTitleTextAttributes = [NSAttributedString.Key.foregroundColor: UIColor.white]
}
UINavigationBar.appearance().isTranslucent = false
UINavigationBar.appearance().shadowImage = UIImage()
UINavigationBar.appearance().setBackgroundImage(UIImage(), for: .default)
}
It's very important to not use navigationController?.navigationBar.setValue(true, forKey: "hidesShadow") because at any time, Apple could remove the "hidesShadow" key path. If they were to do this, any app using this call would break. Since you are not accessing the direct API of a class, this call is subject to App Store rejection.
As of iOS 13, to ensure efficiency, you can do the following:
navigationBar.standardAppearance.shadowColor = nil
isTranslucent = false, the background color will be changed. so far only the "to not use" answer is working for me, even in the latest iOS 14.4 –
Pampuch One very important note here - it's a lot more flexible to change the appearance of the UIViewController's navigationItem than the navigationBar directly.
Why you ask?
For the simple reason that the navigationItem is tied to a single UIViewController and represents the state of the navigationBar for that particular UIViewController. This is big, as you don't have to handle the navigation bar changes between different view controllers within viewWillAppear (or something similar), as you would if you mutated the navigationBar; which is, remember, shared between all view controllers of a given navigation stack (UINavigationController), and changing it in one place changes it for all view controllers up to the stack.
You just set the correct UINavigationBarAppearance for a particular view controller and UIKit will correctly update the navigation bar styling depeneding on which view controller is currently the top view controller on the navigation stack.
navigationItem.standardAppearance` = `UINavigationBarAppearance()
This might sound stupid, but this hairline only appears when the background color for viewController's view is set to any color, but white. I was shocked to learn this fact.
So if you want it to disappear without much trouble just set the controller's view background color to WHITE COLOR.
I know this is an old thread, but I found a solution that works really well:
Subclass UINavigationBar. In your UINavigationBar subclass, override didAddSubview with the following code:
- (void)didAddSubview:(UIView *)subview
{
[super didAddSubview:subview];
if ([subview isKindOfClass:[UIImageView class]]) {
[subview setClipsToBounds:YES];
}
}
[tabviewController.view setBackgroundColor:[UIColor blackColor]];
Did it for me [UIColor blackColor] might be your background color,
and tabviewController is your UITabBarController if you are using it!
My approach:
UINavigationBar.appearance().setBackgroundImage(
UIImage(),
forBarPosition: .Any,
barMetrics: .Default)
var _width:CGFloat! = self.navigationController?.navigationBar.layer.frame.width
var _height:CGFloat! = self.navigationController?.navigationBar.layer.frame.height
var navBarBg = UIView(frame:CGRectMake(0, 0, _width, _height))
//solid color for bg
navBarBg.backgroundColor = UIColor.orangeColor()
view.addSubview(navBarBg)
Here's another option - I think this only works if you don't require translucency on your nav bar (I didn't). I just added a 1 pixel high UIView to the bottom of the nav bar (1 pixel below the nav bar) with the same colour as my nav bar:
UIView *view = [[UIView alloc] init];
[view setBackgroundColor:self.navigationController.navigationBar.barTintColor];
[self.navigationController.navigationBar addSubview:view];
[view mas_makeConstraints:^(MASConstraintMaker *make) {
make.height.equalTo(@(1.0f));
make.leading.trailing.equalTo(self.navigationController.navigationBar);
make.bottom.equalTo(self.navigationController.navigationBar).offset(1.0f);
}];
I'm adding the constraints using Masonry.
Bar style black did it for me.
[[UINavigationBar appearance] setBarStyle:UIBarStyleBlack];
All properties that I have (just in case):
[[UINavigationBar appearance] setBarTintColor:color];
[[UINavigationBar appearance] setTranslucent:NO];
[[UINavigationBar appearance] setShadowImage:[UIImage new]];
[[UINavigationBar appearance] setBarStyle:UIBarStyleBlack];
What worked for me, and was simplest, was to create a png (it only needs to be one pixel by one pixel in dimensions) with the required color and then set the backgroundImage and shadowImage to that:
let greenPixel = UIImage(named: "TheNameOfYourPng")
navigationBar.setBackgroundImage(greenPixel, forBarMetrics: UIBarMetrics.Default)
navigationBar.shadowImage = greenPixel
A nice short Swift function to find the hairline in the subviews is this one:
func findHairLineInImageViewUnder(view view: UIView) -> UIImageView? {
if let hairLineView = view as? UIImageView where hairLineView.bounds.size.height <= 1.0 {
return hairLineView
}
if let hairLineView = view.subviews.flatMap({self.findHairLineInImageViewUnder(view: $0)}).first {
return hairLineView
}
return nil
}
In Xamarin Forms this worked for me. Just add this on AppDelegate.cs:
UINavigationBar.Appearance.ShadowImage = new UIImage();
Hi this works for Swift 4.
override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
self.navigationController?.navigationBar.shadowImage = UIImage()
self.navigationController?.navigationBar.setBackgroundImage(UIImage(), for: .default)
self.navigationController?.navigationBar.isTranslucent = false
}
you need to put this in viewDidLayoutSubviews instead of viewDidLoad
Write your own initializer :D
import Foundation
import UIKit
extension UINavigationController {
convenience init(rootViewController : UIViewController, hidesShadow : Bool) {
self.init(rootViewController : rootViewController)
self.navigationBar.setValue(hidesShadow, forKey: "hidesShadow")
if hidesShadow {
self.extendedLayoutIncludesOpaqueBars = true
self.navigationBar.isTranslucent = false
}
}
}
Combination of answers got me to what I am aiming for.
I used this:
let navigationBarAppearance = UINavigationBarAppearance()
navigationBarAppearance.configureWithOpaqueBackground()
navigationBarAppearance.shadowColor = .clear
navigationItem.scrollEdgeAppearance = navigationBarAppearance
Thin bar is still visible when I only use .configureWithOpaqueBackground(). The whole navigationItem will get the thin bar's color if I only use .shadow property.
So I used both and finally just assign the bar appearance to navigationItem's scrollEdgeAppearance where the content and the navigationBar aligns.
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