特定时间的本地通知 [英] Local Notifications at a specific time

问题描述

我有一个应用程序，我需要在特定日期和时间收到通知.我正在使用以下代码来设置日期和时间.

I have an app and I need to have the notifications at a specific date and time. I am using the following code to set the date and time.

let app = UIApplication.sharedApplication()

let notificationSettings = UIUserNotificationSettings(forTypes: [.Alert, .Sound], categories: nil)
app.registerUserNotificationSettings(notificationSettings)

let calendar = NSCalendar.currentCalendar()

let date = NSDateComponents()
date.hour = 5
date.minute = 0
date.month = 5
date.day = 21
date.year = 2016
date.timeZone = NSTimeZone.systemTimeZone()

let alarm = UILocalNotification()
alarm.fireDate = calendar.dateFromComponents(date)
alarm.timeZone = NSTimeZone.defaultTimeZone()
alarm.alertTitle = ""
alarm.alertBody = ""
alarm.soundName = "Sound.wav"
app.scheduleLocalNotification(alarm)

我已允许通知，并且我可以在用户离开应用后 10 秒安排通知，但不是在特定时间.

I have allowed notifications and I can schedule ten seconds after the user leaves the app but not for a specific time.

推荐答案

你的代码是正确的，除了一件事，小时.NSDate 适用于 24 小时制.因此，如果您希望在下午 5 点收到通知，则需要将小时值设置为 17

You code is correct except for one thing, the hour. NSDate works on 24-hour system. So if you want the notification to come on 5 PM you need to set the hour value to 17

date.hour = 5 //this means 05:00 AM
date.minute = 0

date.hour = 17 //this mean 05:00 PM
date.minute = 0

附言- 您的 alertBody 和 alertTitle 为空白.您可能希望将其设置为某些内容以便显示.

P.S. - Your alertBody and alertTitle are blank. You might want to set it to something so that it shows up.

希望这会有所帮助.:)

Hope this helps. :)

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