针对UIUserNotificationSettings的Swift 3.0语法更改 [英] Swift 3.0 Syntax change for UIUserNotificationSettings

问题描述

我正在使用swift 3.0，并试图将徽章编号添加到我的应用中.我相信执行此操作的正确方法类似于以下内容.

I am using swift 3.0 and am trying to add badge numbers to my app. I believe the correct way to do this is similar to what is below.

application.registerUserNotificationSettings(UIUserNotificationSettings(forTypes: UIUserNotificationType.Sound | UIUserNotificationType.Alert |
            UIUserNotificationType.Badge, categories: nil
            ))

application.applicationIconBadgeNumber = 5

但是，使用'|'时出现错误在 UIUserNotificationSettings 块中，并且如果我只有 UIUserNotificationType，还将收到错误针对 UIUserNotificationSettings 的参数标签(forTypes，类别)与任何可用的重载都不匹配".badge 作为第一个参数.swift 3.0是否更改了该语句的语法?

However, I get an error for using '|' in UIUserNotificationSettings block and will also receive the error "Argument labels (forTypes, categories) do not match any of the available overloads" for UIUserNotificationSettings if I only have UIUserNotificationType.badge as the first argument. Did swift 3.0 change the syntax for this statement?

推荐答案

在Swift 2和Swift 3中均已更新.此行应可解决您的问题.此外，还要确保其他带有UIUserNotificationType的行的变量都已转换为小写.

It has been updated in both Swift 2 and Swift 3. This line should fix your issue. Also make sure any other lines with UIUserNotificationType have had their variables switched to lowercase.

let settings = UIUserNotificationSettings(types: [.alert, .badge, .sound], categories: nil)

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