如何显示多个本地通知-Java 学习之路

背景：

我正在写一个机器人给你发送消息的应用程序 . 这些消息可以作为本地通知接收 .

问题：

当机器人在很短的时间内发送多个通知时（每条消息之间间隔1秒），通知中心将只显示一条消息 . 我每次都会听到通知声音，但我仍然会看到第一条消息 .

相关代码：

func postUserNotification(content: String, delay: TimeInterval, withDictionary dictionary: [String:String] = [:]) {

    let notificationContent = UNMutableNotificationContent()
    notificationContent.body = content
    notificationContent.userInfo = dictionary
    notificationContent.categoryIdentifier = "message"

    let dateAfterDelay = Date(timeIntervalSinceNow: delay)

    let dateComponents = Calendar.current.dateComponents([.year,.month,.day,.hour,.minute,.second], from: dateAfterDelay)


    let trigger = UNCalendarNotificationTrigger(dateMatching: dateComponents, repeats: false)

    let identifier = "identifier" + "\(NotificationManager.incrementor)"

    let localNotification = UNNotificationRequest(identifier: identifier, content: notificationContent, trigger: trigger)

    UNUserNotificationCenter.current().add(localNotification){ (error : Error?) in
        if let theError = error {
            print("the error is \(theError.localizedDescription)")
        }
    }
}

1 回答

1
您的代码没有错：

就像您在问题中写的那样，Apple Docs中提到了这一点：
```
If you are sending multiple notifications to the same device or 
computer within a short period of time, the push service will send only 
the last one.
```
https://developer.apple.com/library/content/technotes/tn2265/_index.html#//apple_ref/doc/uid/DTS40010376-CH1-TNTAG23
回复于 2024-05-09T05:03:13+08:00

如何显示多个本地通知

1 回答

相关问题