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()
}

从旧版Xcode更新时无效。错误是

  

Objective C方法＆＃39;应用程序：didFinishLaunchingWithOptions：＆＃39;   由方法＆＃39;应用程序提供（：didfinishLaunchingWithOptions：）＆＃39;   与可选的需求方法冲突   ＆＃39;应用程序（中：didFinishLaunchingWithOptions：）＆＃39;在协议中   ＆＃39; UIApplicationDelegate＆＃39;

Answer 1

您输入的方法不正确（提示：自动完成是上帝）

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