ios - 迁移到 iOS10 时无法调用 UNNotificationCategory 类型的初始值设定项

Question

我正在使用一个示例项目来处理新通知，从 Swift 2.2 过渡到 Swift 2.3，也从 iOS 9 过渡到 iOS 10。我使用下面的代码，取自 this example :

@available(iOS 10.0, *)
func setupAndGenerateLocalNotification() {
    // Register an Actionable Notification
    let highFiveAction = UNNotificationAction(identifier: NotificationActions.HighFive.rawValue, title: "High Five", options: [])

    //next line is an error:
    let category = UNNotificationCategory(identifier: "wassup", actions: [highFiveAction], minimalActions: [highFiveAction], intentIdentifiers: [], options: [.customDismissAction])
    //Cannot invoke initializer for type 'UNNotificationCategory' with an argument list of type '(identifier: String, actions: _, minimalActions: _, intentIdentifiers: _, options: _)'

    UNUserNotificationCenter.current().setNotificationCategories([category])

    let highFiveContent = UNMutableNotificationContent()
    highFiveContent.title = "Wassup?"
    highFiveContent.body = "Can I get a high five?"

    let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 5, repeats: false)

    let highFiveRequestIdentifier = "sampleRequest"
    let highFiveRequest = UNNotificationRequest(identifier: highFiveRequestIdentifier, content: highFiveContent, trigger: trigger)
    UNUserNotificationCenter.currentNotificationCenter().addNotificationRequest(highFiveRequest) { (error) in
        // handle the error if needed
        print(error)
    }
}

我得到的错误是

Cannot invoke initializer for type 'UNNotificationCategory' with an argument list of type '(identifier: String, actions: _, minimalActions: _, intentIdentifiers: _, options: _)'

Answer 1

您没有提到您的错误是什么，但我怀疑您复制的代码是为比您安装的更早的测试版编写的。

我在工作中使用 Swift 3，而不是 Swift 2.3。从 Xcode 8 beta 5 开始，您应该将 UNUserNotificationCenter.currentNotificationCenter().addNotificationRequest 更改为 UNUserNotificationCenter.current().add，并删除 minimalActions: [highFiveAction]， 来自您的 UNNotificationCategory。有可能只有后者才适用于 Swift 2.3？

我希望这能让您继续前进，但请注意:在 iOS 10 最终版之前，这可能会再次发生变化。特别是，我怀疑 current() 可能会变成 current。