我一直在尝试更改UITabBar上的所选图像.我已经按照其他Stackoverflow问题列出的程序,但似乎没有任何工作.
我尝试通过“用户定义的运行时属性”部分设置图像,并尝试将以下内容添加到AppDelegate.swift：
- var tabBarController = self.window!.rootViewController as UITabBarController
- let tabItems = tabBarController.tabBar.items as [UITabBarItem]
- var selectedImage0 = UIImage(named:"NewsFeedTabSelected")
- selectedImage0?.imageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal)
- tabItems[0].selectedImage = selectedImage0
这不会产生任何结果.我做了一个println(tabItems [0] .title)并输出正确的标题,所以我知道对TabBarItem的引用是有效的.
有什么想法吗？
解决方法
我在AppDelegate上解决了这样的问题.
- var tabBarController = self.window!.rootViewController as UITabBarController
- var tabBar = tabBarController.tabBar as UITabBar
- var tabBarItem1 = tabBar.items![0] as UITabBarItem
- var tabBarItem2 = tabBar.items![1] as UITabBarItem
- var tabBarItem3 = tabBar.items![2] as UITabBarItem
- tabBarItem1.selectedImage = UIImage(named: "FirstSelectedImage")
- tabBarItem2.selectedImage = UIImage(named: "SecondSelectedImage")
- tabBarItem3.selectedImage = UIImage(named: "ThirdSelectedImage")
