CODEWITHSUNDEEP
iosswiftxcodeuibarbuttonitemuiappearance
Paul T.
Paul T.

Reputation: 5038

UIBarButtonItem setBackButtonTitlePositionAdjustment doesn't work

Updated

I want to change offset between Arrow and Text in Back Button in Navigation Bar. It works just fine until I set

UINavigationBar.appearance().standardAppearance = newAppearance

Here is the full code:

        let appearance = UINavigationBar.appearance()
        let standardAppearance = UINavigationBarAppearance()
        standardAppearance.configureWithOpaqueBackground()
        standardAppearance.backgroundColor = someColor
        standardAppearance.titleTextAttributes = [NSAttributedString.Key.foregroundColor: titleColor]
        standardAppearance.largeTitleTextAttributes = [NSAttributedString.Key.foregroundColor: titleColor]
        standardAppearance.shadowColor = navigationShadowColor

        // if remove theses 2 line, offset code works!!!
        appearance.standardAppearance = standardAppearance
        appearance.scrollEdgeAppearance = standardAppearance

        // code to set offset
        UIBarButtonItem
            .appearance()
            .setBackButtonTitlePositionAdjustment(
                UIOffset(horizontal: -20, vertical: 0),
                for: .default)

Upvotes: 3

Views: 1317

Answers (3)

Asperi
Asperi

Reputation: 257533

UINavigationBar.appearance() when specified overrides everything and has own settings for everything, so you need to configure offset via its own properties, like

...
standardAppearance.backButtonAppearance.normal.titlePositionAdjustment = 
    UIOffset(horizontal: -20, vertical: 0)

appearance.standardAppearance = standardAppearance
...

so the part of UIBarButtonItem.appearance() not needed - just remove it

Upvotes: 7

sDev
sDev

Reputation: 1471

You need to set TitlePositionAdjustment in app delegate method "didFinishLaunchingWithOptions" then it will be work.

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
    // Override point for customization after application launch.
    UIBarButtonItem
    .appearance()
    .setBackButtonTitlePositionAdjustment(
        UIOffset(horizontal: -20, vertical: 0),
        for: .default)
    return true
}

Upvotes: 1

m1sh0
m1sh0

Reputation: 2351

This is my code for a custom back button 

func addBackButton() {
    let backButtonView = UIView(frame: CGRect(x: 0, y: 0, width: 70, height: 44))
    let imageView = UIImageView(image: UIImage(named: "back-arrow"))
    imageView.frame = CGRect(x: -5, y: 11, width: 12, height: 22)
    imageView.image = imageView.image!.withRenderingMode(.alwaysTemplate)
    imageView.tintColor = .fiGreen()
    let label = UILabel(frame: CGRect(x: 10, y: 0, width: 60, height: 44))
    label.textColor = .fiGreen()
    label.text = NSLocalizedString("back", comment: "Back")
    backButtonView.addSubview(imageView)
    backButtonView.addSubview(label)
    backButtonView.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(backButtonClicked)))
    let barButton = UIBarButtonItem(customView: backButtonView)
    navigationItem.leftBarButtonItem = barButton
}

I think you can modify it to have the offset that you need.

Upvotes: 0

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