如何在 tvOS 13 中更改选项卡的背景颜色?

问题描述

限时删除！！

TvOS 13.我有一个带有选项卡的 UITabBarController.并且可以自定义几乎所有东西，除了这个明显的东西:聚焦标签的背景.它总是白色的.指南告诉

TvOS 13. I have a UITabBarController with tabs. And can customize almost everything except this obvious thing: focused tab's background. It's always white.Guide tells

为选中和未选中的项目指定色调

我试过了:

view.backgroundColor = .purple
tabBar.tintColor = .yellow
tabBar.barTintColor = .red
tabBar.unselectedItemTintColor = .brown
tabBar.backgroundColor = .green
tabBar.backgroundImage = UIColor.blue.toImage()
tabBar.shadowImage = UIColor.orange.toImage()
tabBar.selectionIndicatorImage = UIColor.burgundy.toImage()

没有任何帮助.

推荐答案

对于@davidv 和其他人，这是我的解决方案:

For @davidv and other folks, here is my solution:

extension UIView {
    func subviews<T:UIView>(ofType type: T.Type) -> [T] {
        var result = self.subviews.compactMap { $0 as? T }
        for sub in self.subviews {
            result.append(contentsOf: sub.subviews(ofType: type))
        }
        return result
    }
}

extension UIViewController {
    override func tabBar(_ tabBar: UITabBar, didSelect item: UITabBarItem) {
        // перекраска кнопки
        let allSubviews = tabBar.subviews(ofType: UIView.self)
        let whiteSubviews = allSubviews.filter { $0.backgroundColor == .white }
        for s in whiteSubviews {
            s.backgroundColor = .gold
        }
    }
}

更新:

为文本着色:

item.setTitleTextAttributes([NSAttributedString.Key.font: font, NSAttributedString.Key.foregroundColor: colorSelected], for: [.focused])
item.setTitleTextAttributes([NSAttributedString.Key.font: font, NSAttributedString.Key.foregroundColor: colorSelected], for: [.highlighted])
item.setTitleTextAttributes([NSAttributedString.Key.font: font, NSAttributedString.Key.foregroundColor: colorUnselected], for: [.normal])

为背景着色:

tabBar.standardAppearance.selectionIndicatorTintColor = .gold

这篇关于如何在 tvOS 13 中更改选项卡的背景颜色?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！

1403页，肝出来的..