iOS13 UITabBar系统

Question

如何去除选项卡顶部的黑线，

[self.tabBar setShadowImage:[UIImage new]];
self.tabBar.backgroundImage = [UIImage new];

iOS13无效

Answer 1

您需要为 iOS 13

使用新的 UITabBarAppareance

if #available(iOS 13.0, *) {
    let appareance = UITabBarAppearance(barAppearance: tabBarController.tabBar.standardAppearance)
    appareance.shadowImage = nil
    appareance.shadowColor = nil
    tabBarController.tabBar.standardAppearance = appareance
} else {
    // Fallback on earlier versions.
    tabBarController.tabBar.shadowImage = UIImage()
}