Swift：如何在 App 委托中向 UItabBar 添加图标图像和图像背景？答案

【问题标题】：Swift : How to add icon image and image background to the UItabBar in App delegate?Swift：如何在 App 委托中向 UItabBar 添加图标图像和图像背景？
【发布时间】：2015-05-03 15:06:24
【问题描述】：

self.window = UIWindow(frame: UIScreen.mainScreen().bounds)

var nav1 = UINavigationController()
var first = ViewController(nibName: nil, bundle: nil)
nav1.viewControllers = [first]

var second = ccDiscovery(nibName: nil, bundle: nil)
var nav2 = UINavigationController()
nav2.viewControllers = [second]

var third = ccPosting(nibName: nil, bundle: nil)
var nav3 = UINavigationController()
nav3.viewControllers = [third]

var fourth = ccProfile(nibName: nil, bundle: nil)
var nav4 = UINavigationController()
nav4.viewControllers = [fourth]

var tabs = UITabBarController()
tabs.viewControllers = [nav1, nav2,nav3,nav4]

self.window!.rootViewController = tabs;
self.window?.makeKeyAndVisible();

如何在 App delegate 中为UItabBar 添加图标图像和图像背景？我找不到。

UITabBarItem.appearance().setTitleTextAttributes([NSForegroundColorAttributeName: UIColor.magentaColor()], forState:.Normal)
UITabBarItem.appearance().setTitleTextAttributes([NSForegroundColorAttributeName: UIColor.redColor()], forState:.Selected)

【问题讨论】：

标签： ios xcode swift uitabbarcontroller

【解决方案1】：

UITabBarController 项目在各个视图控制器上设置tabBarItem 属性：

var tabs = UITabBarController()
nav1.tabBarItem.image = UIImage(named: "some-image-1")
nav2.tabBarItem.image = UIImage(named: "some-image-2")
nav3.tabBarItem.image = UIImage(named: "some-image-3")
nav4.tabBarItem.image = UIImage(named: "some-image-4")
tabs.viewControllers = [nav1, nav2, nav3, nav4]

【讨论】：