Change position of UIBarButtonItem in UINavigation

Question

How can I change the position of a UIBarButtonItem in a UINavigationBar? I would like my button to be about 5px higher than its normal position.

Answer 1

The best way is to subclass your UINavigationBar, as described here: https://stackoverflow.com/a/17434530/1351190

Here is my example:

#define NAVIGATION_BTN_MARGIN 5

@implementation NewNavigationBar

- (void)layoutSubviews {

    [super layoutSubviews];

    UINavigationItem *navigationItem = [self topItem];

    UIView *subview = [[navigationItem rightBarButtonItem] customView];

    if (subview) {

        CGRect subviewFrame = subview.frame;
        subviewFrame.origin.x = self.frame.size.width - subview.frame.size.width - NAVIGATION_BTN_MARGIN;
        subviewFrame.origin.y = (self.frame.size.height - subview.frame.size.height) / 2;

        [subview setFrame:subviewFrame];
    }

    subview = [[navigationItem leftBarButtonItem] customView];

    if (subview) {

        CGRect subviewFrame = subview.frame;
        subviewFrame.origin.x = NAVIGATION_BTN_MARGIN;
        subviewFrame.origin.y = (self.frame.size.height - subview.frame.size.height) / 2;

        [subview setFrame:subviewFrame];
    }
}

@end

Hope it helps.

Answer 2

There is no particularly good way to do this. Your best bet if you really must is to subclass UINavigationBar, and override layoutSubviews to call [super layoutSubviews] and then find and reposition the button's view.

Answer 3

• Swift 3
• custom navigation bar height
• no title jumping

Step 1: Set title position using Appearance API. For example, in AppDelegate's didFinishLaunchingWithOptions

UINavigationBar.appearance().setTitleVerticalPositionAdjustment(-7, for: .default)

Step 2: Subclass UINavigationBar

class YourNavigationBar: UINavigationBar {

    let YOUR_NAV_BAR_HEIGHT = 60

    override func sizeThatFits(_ size: CGSize) -> CGSize {
        return CGSize(width: UIScreen.main.bounds.width, 
                     height: YOUR_NAV_BAR_HEIGHT)
    }

    override func layoutSubviews() {
        super.layoutSubviews()

        let navigationItem = self.topItem

        for subview in subviews {
            if  subview == navigationItem?.leftBarButtonItem?.customView ||
                subview == navigationItem?.rightBarButtonItem?.customView {
                subview.center = CGPoint(x: subview.center.x, y: YOUR_NAV_BAR_HEIGHT / 2)
            }
        }
    }
}

Answer 4

Navigation bar using change left bar position and image edge insets

swift 4

let leftBarButtonItem = UIBarButtonItem.init(image: UIImage(named:"ic_nav-bar_back.png"), landscapeImagePhone: nil, style: .plain, target: viewController, action: #selector(viewController.buttonClick(_:)))
            leftBarButtonItem.imageInsets = UIEdgeInsets(top: 0, left: -15, bottom: 0, right: 0)
            leftBarButtonItem.tintColor = UIColor(hex: 0xED6E19)
            viewController.navigationItem.setLeftBarButton(leftBarButtonItem, animated: true)

Answer 5

This code creates a back button for UINavigationBar with image background and custom position. The trick is to create an intermediate view and modify its bounds.

UIButton *backBtn = [UIButton buttonWithType:UIButtonTypeCustom];
UIImage *backBtnImage = [UIImage imageNamed:@"btn-back"];
UIImage *backBtnImagePressed = [UIImage imageNamed:@"btn-back-pressed"];
[backBtn setBackgroundImage:backBtnImage forState:UIControlStateNormal];
[backBtn setBackgroundImage:backBtnImagePressed forState:UIControlStateHighlighted];
[backBtn addTarget:self action:@selector(goBack) forControlEvents:UIControlEventTouchUpInside];
backBtn.frame = CGRectMake(0, 0, 63, 33);
UIView *backButtonView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 63, 33)];
backButtonView.bounds = CGRectOffset(backButtonView.bounds, -14, -7);
[backButtonView addSubview:backBtn];
UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithCustomView:backButtonView];
self.navigationItem.leftBarButtonItem = backButton;

Answer 6

Try the code below,

UIBarButtonItem *button = [[UIBarButtonItem alloc] initWithTitle:@"Logout" style:UIBarButtonItemStyleDone target:self action:nil];
[button setBackgroundVerticalPositionAdjustment:-20.0f forBarMetrics:UIBarMetricsDefault];
[[self navigationItem] setRightBarButtonItem:button];

Its used to change the 'y' position in this code. Change the 'y' value (here it is -20.0f) according to your requirement. If the value is positive, it will down the button position. If the value is negative, it will up your button position.