Question

我想从日期开始设置重复的本地通知。例如：

开始日期：2018年6月25日

今天日期：2018年6月21日

我被困在这里。下面的代码可以正常工作，但是它将从2018年6月25日开始触发本地通知。

请查看我的本地通知功能：

func scheduleDosageLocalNotification(date: Date) {

        reminder.dosageIdentifier = "Dosage_Day"

        var calendar = Calendar.current
        calendar.timeZone = TimeZone.current

        let notificationContent = UNMutableNotificationContent()
        // Configure Notification Content
        notificationContent.title = "DOSAGE REMINDER"
        notificationContent.body = "Remember to take your TEST tablet dialy."

        // Set Category Identifier
        notificationContent.categoryIdentifier = Notification.Category.First
        var components = calendar.dateComponents([.hour, .minute], from: date)

        components.hour = 08
        components.minute = 00


        let notificationTrigger = UNCalendarNotificationTrigger(dateMatching: components, repeats: true)
       // let notificationTrigger = UNTimeIntervalNotificationTrigger(timeInterval: interval!, repeats: true)

        // Create Notification Request
        let identifier = "Dosage_Day"

        let notificationRequest = UNNotificationRequest(identifier: identifier, content: notificationContent, trigger: notificationTrigger)

        // Add Request to User Notification Center
        UNUserNotificationCenter.current().add(notificationRequest) { (error) in
            if let error = error {
                print("Unable to Add Notification Request (\(error), \(error.localizedDescription))")
            }

            Utilities.saveContextForAppInfo()
        }

    }

应该每天重复一次，但从6月25日开始。 预先感谢！

Answer 1

尝试一下，

let notification = UNMutableNotificationContent()
notification.subtitle = ""
notification.sound = UNNotificationSound.default()


notification.userInfo =  userInfo
notification.title = Title
notification.body = Message

let timeStr = time
let splitTime:[String] = timeStr.components(separatedBy: ":")
var dayComponent = DateComponents()
dayComponent.weekday = day as? Int //[1 to 7 get randomly]
dayComponent.hour = Int(splitTime[0])
dayComponent.minute = Int(splitTime[1])

let notificationTrigger = UNCalendarNotificationTrigger(dateMatching: dayComponent, repeats: true)
let lnMessageId:String = message
let dayRequest = UNNotificationRequest(identifier: lnMessageId , content: notification, trigger: notificationTrigger)
UNUserNotificationCenter.current().add(dayRequest, withCompletionHandler: {(_ error: Error?) -> Void in
if error == nil
{
//print("success")
}
else
{
//print("UNUserNotificationCenter Error : \(String(describing: error?.localizedDescription))")
}
})

如果要在设备中测试通知，

假设下次通知于2018年6月25日晚上7点到达，您将设备设置中的日期修改为6.59 pm和2018年6月25日或将设备设置中的日期修改为7.01 pm和2018年6月25日

预定的通知将在那个时间到达

仅是示例，它将在每个特定的工作日重复通知。如果要重复通知，则应设置任何人的订单，例如每天，每周，每个星期一等。否则，您应在特定日期（无订单日）注册具有唯一ID的多个通知。

请参阅-How to show multiple local notifications?

如果您希望您的通知每天重复，但您想跳过第一次出现。我认为那是不可能的。还有一个类似的问题

Scheduling local notifications to repeat daily from tomorrow in Swift

祝你好运！

Answer 2

请尝试以下代码行：

func scheduleDosageLocalNotification(date: Date) {

    reminder.dosageIdentifier = "Dosage_Day"

    var calendar = Calendar.current
    calendar.timeZone = TimeZone.current

    let notificationContent = UNMutableNotificationContent()
    // Configure Notification Content
    notificationContent.title = "DOSAGE REMINDER"
    notificationContent.body = "Remember to take your TEST tablet dialy."

    // Set Category Identifier
    notificationContent.categoryIdentifier = Notification.Category.First
    var components = calendar.dateComponents([.day,.month,.year,.hour, .minute], from: date!)//calendar.dateComponents([.hour, .minute], from: date)

    components.hour = 08
    components.minute = 00


    let notificationTrigger = UNCalendarNotificationTrigger(dateMatching: components, repeats: true)
   // let notificationTrigger = UNTimeIntervalNotificationTrigger(timeInterval: interval!, repeats: true)

    // Create Notification Request
    let identifier = "Dosage_Day"

    let notificationRequest = UNNotificationRequest(identifier: identifier, content: notificationContent, trigger: notificationTrigger)

    // Add Request to User Notification Center
    UNUserNotificationCenter.current().add(notificationRequest) { (error) in
        if let error = error {
            print("Unable to Add Notification Request (\(error), \(error.localizedDescription))")
        }

        Utilities.saveContextForAppInfo()
    }

}

我已经改变

var components = calendar.dateComponents([.hour, .minute], from: date)

到

 var components = calendar.dateComponents([.day,.month,.year,.hour, .minute], from: date!)

更新后的答案：

func scheduleDosageLocalNotification(date: Date) {
reminder.dosageIdentifier = "Dosage_Day"
var calendar = Calendar.current
calendar.timeZone = TimeZone.current
let notificationContent = UNMutableNotificationContent()
// Configure Notification Content
notificationContent.title = "DOSAGE REMINDER"
notificationContent.body = "Remember to take your TEST tablet dialy."
// Set Category Identifier
notificationContent.categoryIdentifier = Notification.Category.First
var components = calendar.dateComponents([.day, .month, .year, .hour, .minute], from: date!) //calendar.dateComponents([.hour, .minute], from: date)
components.hour = 08
components.minute = 00
var notification: UILocalNotification = UILocalNotification()
notification.category = "Dosage_Day"
notification.alertBody = "Local notification"
notification.fireDate = newDate
notification.repeatInterval = .day
print(notification)
print(notification.fireDate)
UIApplication.sharedApplication().scheduleLocalNotification(notification)
Utilities.saveContextForAppInfo()

} }

快乐编码。...

从日期开始设置重复的本地通知

2 个答案: