Swift 3.0：推送通知中对成员 'Subscript' 的模糊引用问题

Question

这是以下代码，但我在 swift3 中遇到以下错误

func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any], fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {
    notificationReceived(notification: userInfo as [NSObject : AnyObject])
}

func notificationReceived(notification: [NSObject:AnyObject]) {
        let viewController = window?.rootViewController
        let view = viewController as? ViewController
        view?.addNotification(
            title: getAlert(notification: notification).0,
            body: getAlert(notification: notification).1)
    }

    private func getAlert(notification: [NSObject:AnyObject]) -> (String, String) {
        let aps = notification["aps"] as? NSDictionary
        let alert = aps?["alert"] as? [String:AnyObject]
        let title = alert?["title"] as? String
        let body = alert?["body"] as? String
        return (title ?? "-", body ?? "-")
    }

但我收到以下错误“Swift 3.0：在“让 aps = notification["aps"] as?NSDictionary"

Answer 1

类型转换

将 userInfo 从 NSDictionary 更改为 [String : Any]。并尝试一次

let aps = notification["aps"] as? [String : Any]

或像这样写

let aps = notification["aps" as NSString] as? [String:Any]

Answer 2

字符串无法转换为 NSObject，只需将所有 [NSObject:AnyObject] 重命名为 [String:Any] 并使用 Swift 3

Swift 3.0：推送通知中对成员 'Subscript' 的模糊引用问题

Swift 3.0 : Ambiguous reference to member 'Subscript' issue in push notification

ios

swift3

xcode8.1