ios - 如何居中 TabBarItem - Swift

Question

如何将 TabBarIcon 放置在中间？它应该放置在这个红色圆圈的顶部。

我的红圈代码:

let numberOfItems = CGFloat(tabBar.items!.count)
let tabBarItemSize = CGSize(width: tabBar.frame.width / numberOfItems, height: tabBar.frame.height)
let itemBackgroundView = UIView(frame: CGRect(x: tabBarItemSize.width / 2, y: 35, width: 6, height: 6))
itemBackgroundView.backgroundColor = .red
itemBackgroundView.layer.cornerRadius = 3
tabBar.addSubview(itemBackgroundView)

如何使 TabBarIcon 居中，或者如何计算该图标的位置？

Answer 1

您可以尝试使用UITabBarItem的imageInsets，如下代码:

let items = tabBarCnt.tabBar.items
for item in items!
{
   item.imageInsets = UIEdgeInsets(top: 5, left: 0, bottom: -5, right: 0)
}