Xcode 如何将应用程序中的本地通知时间设置为两次之间的随机时间?(swift)
如何使用swift将应用程序中的本地通知时间设置为两次之间的随机时间?Xcode 如何将应用程序中的本地通知时间设置为两次之间的随机时间?(swift),xcode,swift,xcode6,uilocalnotification,Xcode,Swift,Xcode6,Uilocalnotification,如何使用swift将应用程序中的本地通知时间设置为两次之间的随机时间? 例如上午8点到晚上10点之间 我在下面的代码中只指定了一个特定的时间(上午12点),但我不知道如何将时间“随机”设置为两次之间: import UIKit class ViewController: UIViewController { @IBOutlet weak var midnightSwitch: UISwitch! // you should declare your vars here l
例如上午8点到晚上10点之间
我在下面的代码中只指定了一个特定的时间(上午12点),但我不知道如何将时间“随机”设置为两次之间:
import UIKit
class ViewController: UIViewController {
@IBOutlet weak var midnightSwitch: UISwitch!
// you should declare your vars here
let localNotificationDailyAt12am = UILocalNotification()
// you should declare your funcions here
// you have to register the user notifications settings options (badge, alert and sound if desired)
func setUIUserNotificationOptions() {
UIApplication.sharedApplication().registerUserNotificationSettings(UIUserNotificationSettings(forTypes: UIUserNotificationType.Badge | UIUserNotificationType.Sound | UIUserNotificationType.Alert, categories: nil))
}
// now lets setup your notification
func notificationsOptions12am() {
// defines localtime
localNotificationDailyAt12am.timeZone = NSTimeZone.localTimeZone()
// confirms the alert dialog box action
localNotificationDailyAt12am.hasAction = true
// defines the notification alert body text
localNotificationDailyAt12am.alertBody = "The midnight notification message"
// defines the daily time interval
localNotificationDailyAt12am.repeatCalendar = NSCalendar(calendarIdentifier: NSCalendarIdentifierGregorian)
localNotificationDailyAt12am.repeatInterval = .CalendarUnitDay
// defines the notification alert button text
localNotificationDailyAt12am.alertAction = "Open App"
// defines the default sound for your notification
localNotificationDailyAt12am.soundName = UILocalNotificationDefaultSoundName
// increments the badge counter
localNotificationDailyAt12am.applicationIconBadgeNumber = UIApplication.sharedApplication().applicationIconBadgeNumber + 1
// defines your firedate tomorrow at 12am ( note: extension NSDate tomorrowAt12am at the bottom )
localNotificationDailyAt12am.fireDate = NSDate().tomorrowAt12am
// lets set it up
UIApplication.sharedApplication().scheduleLocalNotification(localNotificationDailyAt12am)
}
override func viewDidLoad() {
super.viewDidLoad()
setUIUserNotificationOptions()
notificationsOptions12am()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
@IBAction func switched(sender: AnyObject) {
localNotificationDailyAt12am.fireDate = midnightSwitch.on ?
NSDate().tomorrowAt12am : // tomorrow at 12am
NSDate().dateByAddingTimeInterval(3155673600) // will never fire (100 years from now)
}
}
extension NSDate {
var day: Int { return NSCalendar.currentCalendar().components(.CalendarUnitDay, fromDate: self).day }
var month: Int { return NSCalendar.currentCalendar().components(.CalendarUnitMonth, fromDate: self).month }
var year: Int { return NSCalendar.currentCalendar().components(.CalendarUnitYear, fromDate: self).year }
var tomorrowAt12am: NSDate {
return NSCalendar.currentCalendar().dateWithEra(1, year: year, month: month, day: day+1, hour: 0, minute: 0, second: 0, nanosecond: 0)!
}
thx:)您可以使用以下内容:
extension NSDate {
class func randomTimeBetweenDates(lhs: NSDate, _ rhs: NSDate) -> NSDate {
let lhsInterval = lhs.timeIntervalSince1970
let rhsInterval = rhs.timeIntervalSince1970
let difference = fabs(rhsInterval - lhsInterval)
let randomOffset = arc4random_uniform(UInt32(difference))
let minimum = min(lhsInterval, rhsInterval)
let randomInterval = minimum + NSTimeInterval(randomOffset)
return NSDate(timeIntervalSince1970: randomInterval)
}
}
然后,安排两次约会:
let midnight = ...
let eightAm = ...
let random = NSDate.randomTimeBetweenDates(midnight, eightAm)
我在10:00到10:05之间尝试,但通知总是在10:04到25秒之间显示。这是代码:
let date:NSDate=NSDate()let cal=NSCalendar(calendarIdentifier:NSCalendarIdentifierGregorian)let midnight:NSDate?=cal?.dateBySettingHour(10,分钟:0,秒:0,of date:date,选项:NSCalendarOptions())让eightAm:NSDate?=cal?.dateBySettingHour(10,分钟:5,秒:0,of date:date,选项:NSCalendarOptions())让random=NSDate.RandomTimeBetween(午夜!八点!)
@Logan及以上:
localNotificationDailyAt12am.fireDate=random//让我们设置UIApplication.sharedApplication().scheduleLocalNotification()(localNotificationDailyAt12am)}@IBAction func switched(发送方:AnyObject){localNotificationDailyAt12am.fireDate=middnightswitch.on?random://明天上午12点NSDate().dateByAddingTimeInterval(3155673600)//永远不会触发(100年后)}您上面发布的代码对我有效,我得到了各种地址。(注释1)。您的代码中还有其他内容。我不知道问题出在哪里:s:s