Change position of UIBarButtonItem in UINavigationBar

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

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.

Answer 2

Here's Adriano's solution using Swift 3. It was the only solution that worked for me and I tried several.

  let suggestImage  = UIImage(named: "menu.png")!
    let suggestButton = UIButton(frame: CGRect(x:0, y:0, width:34, height:20))
    suggestButton.setBackgroundImage(suggestImage, for: .normal)
    suggestButton.addTarget(self, action: #selector(self.showPopover(sender:)), for:.touchUpInside)
    suggestButton.transform = CGAffineTransform(translationX: 0, y: -8)
    // add the button to a container, otherwise the transform will be ignored
    let suggestButtonContainer = UIView(frame: suggestButton.frame)
    suggestButtonContainer.addSubview(suggestButton)
    let suggestButtonItem = UIBarButtonItem(customView: suggestButtonContainer)
    // add button shift to the side
    navigationItem.leftBarButtonItem = suggestButtonItem