如何更改 UINavigationItem 字体？

Question

I am trying to change font property for UINavigationItem .

I've tried using titleTextAttributes but somehow I am only able to change title font.

How can I change the font or UINavigationItem ? For example, the "More" text for the Back UIButton shown below:

I've tried using:

self.navigationController?.navigationBar.titleTextAttributes = [
            NSForegroundColorAttributeName: UIColor.blackColor(),
            NSFontAttributeName: UIFont(name: "Papyrus", size: 18)!
        ]

but it only changes what is shown on the picture, not the "More" Button's Font.

Answer 1

The reason your method wasn't working is because you were just using titleTextAttributes = ... when you have to use setTitleTextAttributes:forState: I use this function to customize the Nav Bar globally for my entire project:

func customizeNavBar(_ color: UIColor, titleFont: UIFont, buttonFont: UIFont) {

    UINavigationBar.appearance().tintColor = color
    UINavigationBar.appearance().titleTextAttributes = [NSForegroundColorAttributeName: color, NSFontAttributeName: titleFont]
    UIBarButtonItem.appearance().setTitleTextAttributes([NSForegroundColorAttributeName: color, NSFontAttributeName: buttonFont], forState: UIControlState.Normal)
}

For a single instance, call the same functions:

someBarButton.tintColor.setTitleTextAttributes([NSForegroundColorAttributeName: color, NSFontAttributeName: buttonFont], forState: UIControlState.Normal)

Answer 2

斯威夫特 4

UIBarButtonItem.appearance().setTitleTextAttributes([NSAttributedStringKey.font: UIFont(name: "Helvetica-Bold", size: 15)!], for: .normal)

Answer 3

For iOS 13 and Swift 5.

For setting the bar button item text color & font:

UIBarButtonItem.appearance().setTitleTextAttributes([
    .foregroundColor: UIColor.white, 
    .font: UIFont(name: GetFontNameBold(), size: 40)! ],
    for: UIControl.State.normal)

For setting the title color & font just add in viewDidLoad() the following line:

UINavigationBar.appearance().titleTextAttributes = [
    .foregroundColor: UIColor.white, 
    .font: UIFont(name: "Arial", size: 24)! ]

Answer 4

如果您有插座，请执行以下操作：

titleItem.titleLabel.font = UIFont(name: NAME, size: SIZE)