在UITabBarController中设置选定的图像

Question

I am trying to set a different image as selectedImage , I found this script to put in AppDelegate:

var tabBarController = self.window!.rootViewController as UITabBarController
let tabItems = tabBarController.tabBar.items as [UITabBarItem]

tabItems[2].selectedImage = UIImage(named: "image.png")

But it does not work.

Am I missing something obvious or made a mistake?

Answer 1

You can try by adding this line instead of tabItems[2].selectedImage = UIImage(named: "image.png")

var selectedBG = UIImage(named:””)
UITabBar.appearance().selectionIndicatorImage = selectedBG

Answer 2

没关系，Xcode中的“选定图像”框现在可以使用。