ios - 如何使 UITabbar 透明以便 superview 的背景图像可见？

Question

我用过 UITabbar。我已经将它的背景颜色设置为清除颜色。即使出现黑色背景。我调试了 View ，发现 UITabbar 已将 UIVisualEffectSubView 和 UIVisualEffectBackdropView 隐式实现为黑色。使用 swift 4 使其透明化的更好方法可能是什么。调试图像附在下面。

Answer 1

试试这个:

yourTabBar.backgroundColor = UIColor.clear // clears the background
yourTabBar.backgroundImage = UIImage()
yourTabBar.shadowImage = UIImage()  // removes the border

iOS 15 更新

彩色背景

if #available(iOS 15.0, *) {
    let appearance = UITabBarAppearance()
    appearance.configureWithOpaqueBackground()
    appearance.backgroundColor = .YourColor
    tabBar.standardAppearance = appearance
    tabBar.scrollEdgeAppearance = appearance
}

透明外观

if #available(iOS 15.0, *) {
    let appearance = UITabBarAppearance()
    appearance.configureWithTransparentBackground()
    tabBar.standardAppearance = appearance
    tabBar.scrollEdgeAppearance = appearance
 }