swift - 如何知道ios本地通知何时被触发？

Question

请告诉我如何知道 Swift 4 中何时触发本地通知？我已经尝试了所有似乎不起作用的方法。

Answer 1

您可以创建本地通知

    let trigger = UNTimeIntervalNotificationTrigger.init(timeInterval: 5, repeats: true)
    let content = UNMutableNotificationContent.init()
    content.title = "Danger Will Robinson"
    content.subtitle = "Something This Way Comes"
    content.body = "I need to tell you something, but first read this."

    let notification = UNUserNotificationCenter.current()
    notification.add(UNNotificationRequest.init(identifier: "notification", content: content, trigger: trigger), withCompletionHandler: nil)

当通知在后台触发并且用户点击通知时。

public func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Swift.Void)

当触发通知且应用程序位于前台时。

public func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Swift.Void)

您必须确认 UNUserNotificationCenterDelegate 才能获取触发器。

所以最好的方法是在 appDelegate 中初始化本地通知。