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,除了以下明显的东西:焦点选项卡的背景。总是白色的。Guide告诉
为选定和未选定的项目指定色彩
我尝试过:
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()
无济于事。
对于@davidv和其他人,这是我的解决方案:
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
}
}
}