How to remove UINavigationBar inner shadow in iOS 7?

Question

Inner shadow example

I\'m trying to put nav bar below the other one to make it look like one tall nav bar. But in iOS 7 UINavigationBar now has inner shadow on top and o

Answer 1

You can easily use this UInavigationBar category called UINavigationBar-Addition found here I have used the solution described in this answer but I couldn't get rid of the 1Px line under navigationBar

Answer 2

The "horizontal" line at the bottom of the navigation bar is simply it's shadowImage. It can simply be removed by applying an empty UIImage. According to the documentation you also have to set a custom background image:

- (void)viewDidLoad
{
    [super viewDidLoad];

    // Set the background and shadow image to get rid of the line.
    [self.navigationController.navigationBar setBackgroundImage:[[UIImage alloc] init] forBarMetrics:UIBarMetricsDefault];
    self.navigationController.navigationBar.shadowImage = [[UIImage alloc] init];
}

Answer 3

I really shouldn't as CaptJak has pointed out but for anyone else who gets stuck:

for (UIView *view in self.navigationController.navigationBar.subviews) {
    for (UIView *view2 in view.subviews) {
        if ([view2 isKindOfClass:[UIImageView class]]) {
            [view2 removeFromSuperview];
        }
    }
}

Answer 4

In Swift (tested on iOS9)

self.navigationController!.navigationBar.setBackgroundImage(UIImage(), forBarMetrics: .Default)
self.navigationController!.navigationBar.shadowImage = UIImage()

Answer 5

I had a similar problem, where I wanted to remove the 1px line and the shadow from the navigation bar on iOS7. In my case, I needed a 3 points thick green line at the bottom of the navigation bar.

If there is a solution to get rid of the 1px line at the bottom of the navigation bar that doesn't involve traversing subviews, I don't know, but there is a way to add a view that hides that line as follows (at least the color of the line can be changed that way).

UIView * bgView = [[UIView alloc] initWithFrame:CGRectMake(0, navBarHeight, navBarWidth, 1)]; // Dont use magic numbers in your code
bgView.backgroundColor = //some other color
[navigationBar addSubview:bgView];
[navigationBar setShadowImage:nil];

Answer 6

If your app support only iOS 6.0+, you can simply add below line:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
...
[[UINavigationBar appearance] setShadowImage:[UIImage new]];
...
}