无法在iOS 13中设置标签栏阴影图像 [英] Can't set tab bar shadow image in iOS 13

问题描述

在iOS13之前，我使用下面的代码删除了标签栏的顶部边框:

Before iOS13, I used the code below to remove the tab bar top border:

UITabBar.appearance().shadowImage = UIImage()
UITabBar.appearance().backgroundImage = UIImage()

但是它不适用于iOS13，我正在寻找解决方案.你有什么想法吗?

But it does not work with iOS13, and I am looking for a solution to this. Do you have any thoughts?

推荐答案

Swift 4 +:

在您的TabBarController类中编写以下代码:

In your TabBarController class write this:

 if #available(iOS 13, *) {
        let appearance = self.tabBar.standardAppearance.copy()
        appearance.backgroundImage = UIImage()
        appearance.shadowImage = UIImage()
        appearance.shadowColor = .clear
        self.tabBar.standardAppearance = appearance
    } else {
        self.tabBar.shadowImage = UIImage()
        self.tabBar.backgroundImage = UIImage()
    }

要进行标题调整，请使用此:

appearance.stackedLayoutAppearance.normal.titlePositionAdjustment = UIOffset(horizontal: 0, vertical: -12)

对于目标C

  if (@available(iOS 13.0, *)) {
    UITabBarAppearance* appearance =  self.tabBar.standardAppearance.copy;
    appearance.backgroundImage = [UIImage new];
    appearance.shadowImage = [UIImage new];
    appearance.shadowColor = [UIColor clearColor];
    // Title adjustment
    appearance.stackedLayoutAppearance.normal.titlePositionAdjustment = UIOffsetMake(0, -12);
    self.tabBar.standardAppearance = appearance;
} else {
    self.tabBar.shadowImage = [UIImage new];
    self.tabBar.backgroundImage = [UIImage new];
}

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