为什么只有我的最后一个本地通知函数被调用？

Question

我是新手，我正在尝试调用UISwitch
IBAction中要求本地通知的多个函数。我想在某个日期（一年中的每个季度第4、7、10、1个）发送通知。只有第四个季度函数被调用。如何获得全部四个功能？这是我的代码：

// UISwitch用于季度通知

@IBAction func quarterlyFrequencyTapped(_ sender: UISwitch) {

if quarterlyFrequency.isOn == true {

    firstQuarter(); secondQuarter(); thirdQuarter(); fourthQuarter()

    print("quarterly frequency is \(quarterlyFrequency.isOn)")

} else {

    removeQuarterlyNotification()

    print("quaterly frequency is \(monthlyFrequency.isOn)")

       }

}

//四个季度的功能

func firstQuarter() {
    let firstQuarterContent = UNMutableNotificationContent()
    firstQuarterContent.title = "First Quarter"
    firstQuarterContent.subtitle = "Some string"
    firstQuarterContent.body = "Some other string"

    var firstQuarterDate = DateComponents()
    firstQuarterDate.month = 3
    firstQuarterDate.day = 11
    firstQuarterDate.hour = 19
    firstQuarterDate.minute = 20

    let firstQuarterTrigger = UNCalendarNotificationTrigger(dateMatching: firstQuarterDate, repeats: true)
    let firstQuarterRequestIdentifier = "Quarterly"
    let firstQuarterRequest = UNNotificationRequest(identifier: firstQuarterRequestIdentifier, content: firstQuarterContent, trigger: firstQuarterTrigger)
    UNUserNotificationCenter.current().add(firstQuarterRequest, withCompletionHandler: nil)
}

func secondQuarter() {
    let secondQuarterContent = UNMutableNotificationContent()
    secondQuarterContent.title = "Second Quarter"
    secondQuarterContent.subtitle = "Some string"
    secondQuarterContent.body = "Some other string"

    var secondQuarterDate = DateComponents()
    secondQuarterDate.month = 3
    secondQuarterDate.day = 11
    secondQuarterDate.hour = 19
    secondQuarterDate.minute = 21

    let secondQuarterTrigger = UNCalendarNotificationTrigger(dateMatching: secondQuarterDate, repeats: true)
    let secondQuarterRequestIdentifier = "Quarterly"
    let secondQuarterRequest = UNNotificationRequest(identifier: secondQuarterRequestIdentifier, content: secondQuarterContent, trigger: secondQuarterTrigger)
    UNUserNotificationCenter.current().add(secondQuarterRequest, withCompletionHandler: nil)
}

func thirdQuarter() {
    let thirdQuarterContent = UNMutableNotificationContent()
    thirdQuarterContent.title = "Third Quarter"
    thirdQuarterContent.subtitle = "Some string"
    thirdQuarterContent.body = "Some other string"

    var thirdQuarterDate = DateComponents()
    thirdQuarterDate.month = 3
    thirdQuarterDate.day = 11
    thirdQuarterDate.hour = 19
    thirdQuarterDate.minute = 22

    let thirdQuarterTrigger = UNCalendarNotificationTrigger(dateMatching: thirdQuarterDate, repeats: true)
    let thirdQuarterRequestIdentifier = "Quarterly"
    let thirdQuarterRequest = UNNotificationRequest(identifier: thirdQuarterRequestIdentifier, content: thirdQuarterContent, trigger: thirdQuarterTrigger)
    UNUserNotificationCenter.current().add(thirdQuarterRequest, withCompletionHandler: nil)
}

func fourthQuarter() {
    let fourthQuarterContent = UNMutableNotificationContent()
    fourthQuarterContent.title = "Fourth Quarter"
    fourthQuarterContent.subtitle = "Some string"
    fourthQuarterContent.body = "Some other string"

    var fourthQuarterDate = DateComponents()
    fourthQuarterDate.month = 3
    fourthQuarterDate.day = 11
    fourthQuarterDate.hour = 19
    fourthQuarterDate.minute = 23

    let fourthQuarterTrigger = UNCalendarNotificationTrigger(dateMatching: fourthQuarterDate, repeats: true)
    //let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 60, repeats: true)
    let fourthQuarterRequestIdentifier = "Quarterly"
    let fourthQuarterRequest = UNNotificationRequest(identifier: fourthQuarterRequestIdentifier, content: fourthQuarterContent, trigger: fourthQuarterTrigger)
    UNUserNotificationCenter.current().add(fourthQuarterRequest, withCompletionHandler: nil)
}

Answer 1

我认为您使用的是+ iOS10，并且使用的是UserNotifications框架，对吗？

您identifier的很有可能具有 相同的名称， 并且每个都在 更新 前一个通知。

identifier存在的原因是为了帮助您更新具有相同标识符的先前通知。例如，您发送一条通知将分数从更新0-0为0-1。现在，屏幕上只有2条通知，而不是2条通知。

您的解决办法是为每个标识符使用 不同的 标识符。

有关更多信息，请参阅此刻的WWDC视频

编辑后的更新： 正如我所说的…您的所有通知均已"Quarterly"作为其标识符。为他们分别命名。