从TabBar中删除第一行

Question

在iOS 10上,此代码无法删除tabBar阴影线:

[[UITabBar appearance] setShadowImage:[[UIImage alloc] init]];

有人知道,我该怎么做才能删除它？

在iOS 9.3这两行中删除该行,但iOS 10忽略setShadowImage命令.

Answer 1

试着低估iOS 10的代码: -

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.
    [[UITabBar appearance] setBackgroundImage:[UIImage imageNamed:@"fondoTabBar"]];
    [UITabBar appearance].layer.borderWidth = 0.0f;
    [UITabBar appearance].clipsToBounds = true;
    return YES;
}

Swift 3.x

UITabBar.appearance().layer.borderWidth = 0.0
UITabBar.appearance().clipsToBounds = true

Answer 2

只有2行删除了背线

let appearance = tabBar.standardAppearance
appearance.shadowImage = nil
appearance.shadowColor = nil
tabBar.standardAppearance = appearance;

Answer 3

在 iOS 14 上测试

override func viewDidLoad() {
    // Remove default border line
    tabBar.shadowImage = UIImage()
    tabBar.backgroundImage = UIImage()
    tabBar.backgroundColor = UIColor.white
}

Answer 4

对于iOS 13

if (@available(iOS 13.0, *)) {
    UITabBarAppearance *appearance = [self.tabBarController.tabBar.standardAppearance copy];
    appearance.shadowImage = nil;
    appearance.shadowColor = nil;
    self.tabBarController.tabBar.standardAppearance = appearance;
}

Answer 5

从 iOS 13.3 开始的工作解决方案

// remove top line
if #available(iOS 13.0, *) {
    // ios 13.0 and above
    let appearance = tabBar.standardAppearance
    appearance.shadowImage = nil
    appearance.shadowColor = nil
    appearance.backgroundEffect = nil
    // need to set background because it is black in standardAppearance
    appearance.backgroundColor = .someColor
    tabBar.standardAppearance = appearance
} else {
    // below ios 13.0
    let image = UIImage()
    tabBar.shadowImage = image
    tabBar.backgroundImage = image
    // background
    tabBar.backgroundColor = .someColor
}

Answer 6

这对我有用@iso13：

AppDelegate.swift

UITabBar.appearance().clipsToBounds = true
UITabBar.appearance().shadowImage = nil

或者

UITabBar.appearance().clipsToBounds = true
UITabBar.appearance().layer.borderWidth = 0

或者

UITabBar.appearance().clipsToBounds = true
UITabBar.appearance().layer.borderColor = UIColor.clear.cgColor