xcode - 来自早期版本的 Xcode 6.3/iOS 8.3 错误

Question

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: NSDictionary?) -> Bool {
      UINavigationBar.appearance().barTintColor = UIColor.orangeColor()
      UINavigationBar.appearance().tintColor = UIColor.whiteColor()
}

当我从旧版本的 Xcode 更新时无法正常工作。错误是

由方法 'application(:didfinishLaunchingWithOptions:)' 提供的 Objective C 方法 'application:didFinishLaunchingWithOptions:' 与协议 'UIApplicationDelegate' 中的可选要求方法 'application(:didfinishLaunchingWithOptions:)' 冲突

Answer 1

您输入的方法不正确（提示：自动完成是神）

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
     UINavigationBar.appearance().barTintColor = UIColor.orangeColor()
     UINavigationBar.appearance().tintColor = UIColor.whiteColor()
     return true;
}