无论发生日期如何，UILocalNotification都会在我加载应用时立即显示 [英] UILocalNotification always shows up as soon as I load my app regardless of the fire date

问题描述

您好我是swift和IOS编程的新手。我已经设置了6个通知，这些通知应该每天提醒用户6次，具体取决于一天中的时间。警报正在运行，但出于某种原因，当应用程序首次启动时，所有6个警报同时显示在通知中心。任何帮助将不胜感激。

Hello I am new to swift and IOS programming. I have set up 6 notifications that are supposed to alert the user 6 times a day depending on the time of day. The alerts are working but for some reason when the app first launches all 6 alerts show up in the notification center at the same time. Any help will be greatly appreciated.

这是AppDelegate.swift中的代码

this is the code in the AppDelegate.swift

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
        // Override point for customization after application launch.



        let notificationTypes : UIUserNotificationType = UIUserNotificationType.Alert | UIUserNotificationType.Badge
        let notificationSetting : UIUserNotificationSettings = UIUserNotificationSettings(forTypes: notificationTypes, categories: nil)
        UIApplication.sharedApplication().registerUserNotificationSettings(notificationSetting)

        return true
    }

这是我对六种不同通知的函数

this is my function for the six different notifications

func prayerAlert (prayerName : String, prayHour : Int, prayMinute : Int) {


        dateComp.year = Int(currentDate.year)
        dateComp.month = Int(currentDate.month)
        dateComp.day = Int(currentDate.day)
        dateComp.hour = prayHour
        dateComp.minute = prayMinute
        dateComp.timeZone = NSTimeZone.systemTimeZone()

        var calender : NSCalendar = NSCalendar(calendarIdentifier: NSGregorianCalendar)!
        var date : NSDate = calender.dateFromComponents(dateComp)!

        var notification : UILocalNotification = UILocalNotification()
        notification.alertBody = prayerName
        notification.fireDate = date



        UIApplication.sharedApplication().scheduleLocalNotification(notification)
    }

这就是我所在的地方m在ViewDidLoad中调用该函数

and this is where I'm calling the function in the ViewDidLoad

override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.

        pray.setTimeFormat(0)


        self.locationManager.requestAlwaysAuthorization()
        self.locationManager.requestWhenInUseAuthorization()


        if CLLocationManager.locationServicesEnabled() {
            self.locationManager.delegate = self
            self.locationManager.desiredAccuracy = kCLLocationAccuracyNearestTenMeters
            self.locationManager.startUpdatingLocation()

        }



        var timesArray = pray.getDatePrayerTimes(currentDate.year, andMonth: currentDate.month, andDay: currentDate.day, andLatitude: locationManager.location.coordinate.latitude, andLongitude: locationManager.location.coordinate.longitude, andtimeZone: pray.timeZone)


            var convertedTime = convertPrayArray(timesArray as NSMutableArray)

            prayerAlert("Time for Fajr", prayHour: convertedTime.hourArray[0], prayMinute: convertedTime.minuteArray[0])
            prayerAlert("Time for SunRise", prayHour: convertedTime.hourArray[1], prayMinute: convertedTime.minuteArray[1])
            prayerAlert("Time for Dhuhr", prayHour: convertedTime.hourArray[2], prayMinute: convertedTime.minuteArray[2])
            prayerAlert("Time for Asr", prayHour: convertedTime.hourArray[3], prayMinute: convertedTime.minuteArray[3])
            prayerAlert("Time for Maghrib", prayHour: convertedTime.hourArray[5], prayMinute: convertedTime.minuteArray[5])
            prayerAlert("Time for Isha", prayHour: convertedTime.hourArray[6], prayMinute: convertedTime.minuteArray[6])


    }

推荐答案

更新： Xcode 7.1•Swift 2.1

问题是您将日期组件设置为localTime区域而不是通知。

The problem is that you are setting the date components to localTime zone instead of the notification.

添加此扩展名NSDate以从NSDate返回所需的组件（）

add this extension NSDate to return the desired components from NSDate()

extension NSDate {
    var minute: Int { return NSCalendar.currentCalendar().component(.Minute, fromDate: self)}
    var hour:   Int { return NSCalendar.currentCalendar().component(.Hour,   fromDate: self)}
    var day:    Int { return NSCalendar.currentCalendar().component(.Day,    fromDate: self)}
    var month:  Int { return NSCalendar.currentCalendar().component(.Month,  fromDate: self)}
    var year:   Int { return NSCalendar.currentCalendar().component(.Year,   fromDate: self)}
    func fireDateAt(hr: Int, min: Int) -> NSDate {
        let date = NSDate()
        return NSCalendar.currentCalendar().dateWithEra(1,
            year: year,
            month: month,
            day: { hr > date.hour || (hr == date.hour && min > date.minute) ? day : day + 1 }(),
            hour: hr,
            minute: min,
            second: 0,
            nanosecond: 0
        )!
    }
}

timeZone Property

timeZone Property

通知的开火日期的时区。

The time zone of the notification’s fire date.

fireDate中指定的日期根据值$ b解释$ b这个属性。如果指定nil（默认值），则开火日期为
，解释为绝对GMT时间，适用于
作为倒计时器的情况。如果您将有效的NSTimeZone对象分配给此
属性，则开火日期将被解释为挂钟时间，即当时区发生变化时，会自动调整
;适合这种情况的
示例是一个闹钟。

The date specified in fireDate is interpreted according to the value of this property. If you specify nil (the default), the fire date is interpreted as an absolute GMT time, which is suitable for cases such as countdown timers. If you assign a valid NSTimeZone object to this property, the fire date is interpreted as a wall-clock time that is automatically adjusted when there are changes in time zones; an example suitable for this case is an an alarm clock.

func prayerAlert (prayerName : String, prayHour : Int, prayMinute : Int) {
    var notification = UILocalNotification()
    notification.timeZone  = NSTimeZone.localTimeZone()
    notification.alertBody = prayerName
    notification.fireDate  = NSDate().fireDateAt(prayHour, min: prayMinute)
    UIApplication.sharedApplication().scheduleLocalNotification(notification)
}

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