iPadOS 15 UITabBar title cut off

Question

Since I upgraded my iPad operating system, the title of the UITabBar of my app is showing truncated, as shown in the screenshot.

I have tried some methods, but I have not found the correct solution.

Hope someone can help me.

And Here is code:

func setupTabBar() {
    if #available(iOS 13, *) {
        let appearance = tabBar.standardAppearance
        appearance.configureWithOpaqueBackground()
        appearance.backgroundImage = UIImage(color: .white)
        appearance.shadowImage = UIImage(color: .clear)
        let normalAttrs: [NSAttributedString.Key: Any] = [.foregroundColor: ThemeColor.gray]
        let selectedAttrs: [NSAttributedString.Key: Any] = [.foregroundColor: ThemeColor.red]
        appearance.stackedLayoutAppearance.selected.titleTextAttributes = selectedAttrs
        appearance.stackedLayoutAppearance.normal.titleTextAttributes = normalAttrs
        appearance.inlineLayoutAppearance.selected.titleTextAttributes = selectedAttrs
        appearance.inlineLayoutAppearance.normal.titleTextAttributes = normalAttrs
        appearance.compactInlineLayoutAppearance.selected.titleTextAttributes = selectedAttrs
        appearance.compactInlineLayoutAppearance.normal.titleTextAttributes = normalAttrs
        UITabBar.appearance().standardAppearance = appearance
    } else {
        tabBar.backgroundImage = UIImage(color: .white)
        tabBar.shadowImage = UIImage(color: .clear)
    }

    if #available(iOS 15, *) {
        UITabBar.appearance().scrollEdgeAppearance = UITabBar.appearance().standardAppearance
    }
}

Answer 1

For some reason, it seems that setting the titleTextAttributes is what causes the problem to happen with inlineLayoutAppearance , and including the default paragraph style of NSParagraphStyle.default fixes it.

For your code, the following changes should fix it (as of iOS 15.0).

let normalAttrs: [NSAttributedString.Key: Any] = [.foregroundColor: ThemeColor.gray, .paragraphStyle: NSParagraphStyle.default]
let selectedAttrs: [NSAttributedString.Key: Any] = [.foregroundColor: ThemeColor.red, .paragraphStyle: NSParagraphStyle.default]

Answer 2

For those that cannot have a default paragraph style, setting the attributes for most States got the OS to size the labels correctly for me.

Swift 5.0:

    UITabBarItem.appearance()
        .setTitleTextAttributes(
            customAttributesWithCustomParagraphStyle,
            for: [
                .normal,
                .highlighted,
                .disabled,
                .selected,
                .focused,
                .application,
            ]
        )

Without setting it for at least .normal and .selected , the UITabBarItem title gets truncated when used with custom attributes.