Question

我使用UNTimeIntervalNotificationTrigger使用以下代码向用户发送通知。通知在1小时后发送，即可生效。现在，我想让用户能够重置通知的TimeInterval，以便再次运行相同的通知，但TimeInterval仅在用户按下此按钮时重置。这意味着repeats: true不是一种选择。

我的代码：

let tijd = 15

@IBAction func change(_ sender: Any) {
    // Notification
    let content = UNMutableNotificationContent()
    content.title = "title"
    content.body = "body"
    content.badge = 1
    content.sound = UNNotificationSound.default()


    // Timer
    let trigger = UNTimeIntervalNotificationTrigger(timeInterval: TimeInterval(tijd), repeats: false)
    let request = UNNotificationRequest(identifier: bezigheid, content: content, trigger: trigger)

    UNUserNotificationCenter.current().add(request, withCompletionHandler: nil)
}

@IBAction func repeat(_ sender: Any) {
    let trigger = UNTimeIntervalNotificationTrigger(timeInterval: TimeInterval(tijd), repeats: false)
    trigger.invalidate()
}

我在单击按钮重复时尝试使TimeInterval无效，但这只给了我一个错误，所以我不认为这是要走的路。做这个动作的方法是什么？：）

Answer 1

这很简单，感谢@KKRocks，我找到了解决方案。我只需删除它并再次添加相同的通知，请参阅代码：

let tijd = 15

@IBAction func change(_ sender: Any) {
    // Notification
    let content = UNMutableNotificationContent()
    content.title = "title"
    content.body = "body"
    content.badge = 1
    content.sound = UNNotificationSound.default()

    // Timer
    let trigger = UNTimeIntervalNotificationTrigger(timeInterval: TimeInterval(tijd), repeats: false)
    let request = UNNotificationRequest(identifier: bezigheid, content: content, trigger: trigger)

    UNUserNotificationCenter.current().add(request, withCompletionHandler: nil)
}

@IBAction func repeat(_ sender: Any) {     
    // Remove notification
    UNUserNotificationCenter.current().removePendingNotificationRequests(withIdentifiers: [bezigheid])

    // Notification
    let content = UNMutableNotificationContent()
    content.title = "title"
    content.body = "body"
    content.badge = 1
    content.sound = UNNotificationSound.default()

    // Timer
    let trigger = UNTimeIntervalNotificationTrigger(timeInterval: TimeInterval(tijd), repeats: false)
    let request = UNNotificationRequest(identifier: bezigheid, content: content, trigger: trigger)

    // Add notification
    UNUserNotificationCenter.current().add(request, withCompletionHandler: nil)
}

Answer 2

首先使用以下代码删除旧通知：//删除通知

UNUserNotificationCenter.current().removePendingNotification‌Requests(withIdentif‌iers: [bezigheid])

然后，您可以设置下一个通知，就像设置第一个通知一样！

再次发送通知

2 个答案: