对于iOS 10,请在每周的特定日期重复UserNotification

Question

我正在研究iOS 10的本地通知调度模块,它可以重复本地通知,例如每个星期天或每个星期一......等等.假设我安排了这个日期的通知,2016-12-27 10:53:22 +0000并且使用UNCalendarNotificationTrigger重复值等于true,通知会在该日期触发,并且不会在下周同时重复.

可能是什么原因？如何在iOS 10中的特定日期每周重复一次.

以下是创建本地通知的代码:

 let content = UNMutableNotificationContent()
 content.title = object.title
 content.body = object.body
 content.sound = UNNotificationSound.default()

 let date = object.fireDate
 let triggerDate =  Calendar.current.dateComponents([.year,.month,.day,.hour,.minute,.second,], from: date as Date)

 let trigger = UNCalendarNotificationTrigger(dateMatching: triggerDate,
                                                            repeats: true)
 // Swift
 let identifier = object.id
 let request = UNNotificationRequest(identifier: identifier,
                                                    content: content, trigger: trigger)
 localNotification.add(request, withCompletionHandler: { (error) in

  if error != nil  {
   // Something went wrong
   print(error!)

   }else {

   print("Reminder \(object.id) has been added successfully at \(object.fireDate)")
   }
})

更新:

我也发现在该日期通知被解雇后,检查是否存在更多未决通知或检查是否已重新安排该通知.实际上重复等于真,它还没有安排在下周再次安排.

UNUserNotificationCenter.current().getPendingNotificationRequests(completionHandler: { (notficiations) in

            for localNotification in notficiations {

                print(localNotification)

            }
        })

结果是:

<UNNotificationRequest: 0x174223ca0; identifier: A1, content: <UNNotificationContent: 0x1742e2980; title: My Title, subtitle: (null), body: My Body, categoryIdentifier: , launchImageName: , peopleIdentifiers: (
), threadIdentifier: , attachments: (
), badge: (null), sound: <UNNotificationSound: 0x1740b1820>, hasDefaultAction: YES, shouldAddToNotificationsList: YES, shouldAlwaysAlertWhileAppIsForeground: NO, shouldLockDevice: NO, shouldPauseMedia: NO, isSnoozeable: NO, fromSnooze: NO, darwinNotificationName: (null), darwinSnoozedNotificationName: (null), trigger: <UNCalendarNotificationTrigger: 0x174223cc0; dateComponents: <NSDateComponents: 0x17415e140>
    Calendar Year: 2016
    Month: 12
    Day: 27
    Hour: 14
    Minute: 46
    Second: 15, repeats: YES>>

我不知道它是否真的是iOS中的错误.

Answer 1

触发日期格式不适合在一周中的某一天重复通知.您当前的触发日期组件包括年,月,日等,因此该通知在每年的特定月份和日期重复.更改触发日期,如下所述,以在一周中的某一天重复通知.

 let triggerDate =  Calendar.current.dateComponents([.weekday,.hour,.minute], from: date as Date)