为什么模糊地提及会员＆＃39;下标＆＃39;？

Question

这是我的Swift 3代码：

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
    if let userInfo : Foundation.NSDictionary = launchOptions?[UIApplicationLaunchOptionsKey.remoteNotification] as? Foundation.NSDictionary {
        self.setNavigationInfoFromPushNotification(userInfo: userInfo)
        navigateFromPushNotification()
    }
    ...
}

导致编译时错误：

  

对成员＆＃39;下标＆＃39;

的模糊引用

请有人帮我这个吗？

Answer 1

方法签名已更改。请参阅How to handle launch options in Swift 3 when a notification is tapped? Getting syntax problems。

现在是：

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey : Any]? = nil) -> Bool { 
    if let userInfo = launchOptions?[.remoteNotification] as? NSDictionary {
        setNavigationInfoFromPushNotification(userInfo: userInfo)
        navigateFromPushNotification()
    }
    ...
}