如何在自定义开始和结束时间之间的自定义间隔设置通知答案

【问题标题】：how to set notifications at custom intervals between custom start and end times如何在自定义开始和结束时间之间的自定义间隔设置通知
【发布时间】：2020-05-08 14:46:13
【问题描述】：

所以我问了一个类似的问题，但这超出了该问题的范围。我想为用户提供自定义通知何时开始和结束的选项；然后他们会选择通知的间隔。

上一个问题：how to set local notifications between 8am and 8pm every day

这是我现在使用的功能，由@Robert Crabtree 提供：

let notificationCenter = UNUserNotificationCenter.current()
    notificationCenter.removeAllDeliveredNotifications()
    notificationCenter.removeAllPendingNotificationRequests()

    let startHour = 7
    let endHour = 23

    let totalHours = endHour - startHour
    let totalNotifications = totalHours * 2

    for i in 0...totalNotifications {
        var date = DateComponents()
        date.hour = startHour + i / 2
        date.minute = 30 * (i % 2)
        print("setting reminder for \(date.hour!):\(date.minute!)")

        let notification = UNMutableNotificationContent()
        notification.title = reminderMessages[randomInt].title
        notification.body  = reminderMessages[randomInt].body

        let trigger = UNCalendarNotificationTrigger(dateMatching: date, repeats: true)
        let uuidString = UUID().uuidString
        let request = UNNotificationRequest(identifier: uuidString, content: notification, trigger: trigger)
        notificationCenter.add(request, withCompletionHandler: nil)
    }

【问题讨论】：

标签： swift notifications intervals unusernotificationcenter

【解决方案1】：

如果您对如何更好地做到这一点有任何其他建议，请告诉我。

    let notificationCenter = UNUserNotificationCenter.current()
    notificationCenter.removeAllDeliveredNotifications()
    notificationCenter.removeAllPendingNotificationRequests()

    let startHour = 7
    let endHour   = 23
    let intervals = 20

    let totalHours = endHour - startHour
    let totalNotifications = totalHours * 60 / intervals

    for i in 0...totalNotifications {
        var date = DateComponents()
        date.hour = startHour + (intervals * i) / 60
        date.minute = (intervals * i) % 60
        print("setting reminder for \(date.hour!):\(date.minute!)")
        let notification = getReminder()

        let trigger = UNCalendarNotificationTrigger(dateMatching: date, repeats: true)
        let uuidString = UUID().uuidString
        let request = UNNotificationRequest(identifier: uuidString, content: notification, trigger: trigger)
        notificationCenter.add(request, withCompletionHandler: nil)
    }

【讨论】：