在 Swift 中设置多次通知

Posted 2023-02-23

【中文标题】在 Swift 中设置多次通知

【英文标题】：Setting Multiple Times for Notifications in Swift

【发布时间】：2014-12-08 20:16:44

【问题描述】：

所以我现在正在使用 Swift，当一个开关被激活时，我在某个时间出现了一个通知。

但是，我希望在另一个开关被激活时再发出另一个通知。

这是我的 ViewController 代码：

 @IBOutlet var myDatePicker: UIDatePicker!

@IBOutlet var mySwitch: UISwitch!

@IBOutlet var mySwitchTwo: UISwitch!


var localNotification:UILocalNotification = UILocalNotification()
var localNotificationTwo:UILocalNotification = UILocalNotification()

func datePicker()             myDatePicker.datePickerMode = UIDatePickerMode.Date 
func datePickerDefaultDate()  myDatePicker.date = NSDate().xDays(+1) 


func toggleSwitch()
    if mySwitch.on
        localNotification.alertAction = "Open App"
        localNotification.alertBody = "Please take your medication."
        localNotification.fireDate = myDatePicker.date.fireDate
        localNotification.repeatInterval = NSCalendarUnit.CalendarUnitDay
        localNotification.timeZone = NSTimeZone.localTimeZone()
        UIApplication.sharedApplication().scheduleLocalNotification(localNotification)
     else 
        localNotification.alertAction = "Open App"
        localNotification.alertBody = "This notification should not appear"
        localNotification.fireDate = NSDate(timeIntervalSinceNow: 999999999999)
    


func toggleSwitchTwo() 
    if mySwitchTwo.on
        localNotification.alertAction = "Open App"
        localNotification.alertBody = "Please take your medication."
        localNotification.fireDate = myDatePicker.date.fireDateTwo
        localNotification.repeatInterval = NSCalendarUnit.CalendarUnitDay
        localNotification.timeZone = NSTimeZone.localTimeZone()
        UIApplication.sharedApplication().scheduleLocalNotification(localNotificationTwo)
     else 
        localNotification.alertAction = "Open App"
        localNotification.alertBody = "This notification should not appear"
        localNotification.fireDate = NSDate(timeIntervalSinceNow: 999999999999)
    



override func viewDidLoad() 
    super.viewDidLoad()

    // Do any additional setup after loading the view.


override func didReceiveMemoryWarning() 
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.


@IBAction func switchPressed(sender: AnyObject) 
    toggleSwitch()


@IBAction func switchPressedTwo(sender: AnyObject) 
    toggleSwitchTwo()

这是第一个带有第一次切换时间的swift文件：

import Foundation
public extension NSDate 
func xDays(x:Int) -> NSDate 
    return NSCalendar.currentCalendar().dateByAddingUnit(.CalendarUnitDay, value: x, toDate: self, options: nil)!

var day:            Int  return NSCalendar.currentCalendar().components(NSCalendarUnit.CalendarUnitDay,           fromDate: self).day           
var month:          Int  return NSCalendar.currentCalendar().components(NSCalendarUnit.CalendarUnitMonth,         fromDate: self).month         
var year:           Int  return NSCalendar.currentCalendar().components(NSCalendarUnit.CalendarUnitYear,          fromDate: self).year          
var fireDate: NSDate     return NSCalendar.currentCalendar().dateWithEra(1, year: year, month: month, day: day, hour: 8, minute: 0, second: 0, nanosecond: 0)! 
 

我希望下次通知时间为下午 1 点。这是我为此制作的 swift 文件：

 import Foundation
 public extension NSDate 
func xDaysTwo(x:Int) -> NSDate 
    return NSCalendar.currentCalendar().dateByAddingUnit(.CalendarUnitDay, value: x, toDate: self, options: nil)!

var dayTwo:            Int  return NSCalendar.currentCalendar().components(NSCalendarUnit.CalendarUnitDay,           fromDate: self).day           
var monthTwo:          Int  return NSCalendar.currentCalendar().components(NSCalendarUnit.CalendarUnitMonth,         fromDate: self).month         
var yearTwo:           Int  return NSCalendar.currentCalendar().components(NSCalendarUnit.CalendarUnitYear,          fromDate: self).year          
var fireDateTwo: NSDate     return NSCalendar.currentCalendar().dateWithEra(1, year: year, month: month, day: day, hour: 13, minute: 0, second: 0, nanosecond: 0)! 
 

我遇到了问题，非常感谢您的帮助，在此先感谢！

【问题讨论】：

你有什么问题？实际发生了什么？

当我构建它时，它说构建成功，但是当我点击带有开关和日期选择器的按钮时，我收到一个 SIGABRT 错误@Dima

您在使用界面构建器/情节提要吗？你真的连接了 IBOutlets/IBActions 吗？

我用 ctrl + drag 把它们连接起来。在我有第二个开关之前，它工作得很好。我可以将第一个开关与 fireDateTwo 连接，然后它会触发。但是现在我有了第二个开关，我得到了那个错误。 @Dima

你不需要两个扩展名

【参考方案1】：

import UIKit

class ViewController: UIViewController 

    @IBOutlet var myDatePicker: UIDatePicker!
    @IBOutlet var mySwitch7am: UISwitch!
    @IBOutlet var mySwitch8am: UISwitch!

    var localNotification7am = UILocalNotification()
    var localNotification8am = UILocalNotification()
    var notificationsCounter = 0

    func datePicker()             myDatePicker.datePickerMode = UIDatePickerMode.Date 
    func datePickerDefaultDate()  myDatePicker.date = NSDate().hour > 8 ? NSDate().xDays(+1) : NSDate() 

    func notificationsOptions7am() 
        localNotification7am.timeZone = NSTimeZone.localTimeZone()
        localNotification7am.repeatInterval = .CalendarUnitDay
        UIApplication.sharedApplication().scheduleLocalNotification(localNotification7am)
        localNotification7am.alertAction = "Open App"
        localNotification7am.soundName = UILocalNotificationDefaultSoundName
    
    func notificationsOptions8am() 
        localNotification7am.timeZone = NSTimeZone.localTimeZone()
        localNotification7am.repeatInterval = .CalendarUnitDay
        UIApplication.sharedApplication().scheduleLocalNotification(localNotification8am)
        localNotification7am.alertAction = "Open App"
        localNotification7am.soundName = UILocalNotificationDefaultSoundName
    
    func toggleSwitch7am()
        localNotification7am.alertBody = "Here is the seven o'clock notification"
        localNotification7am.fireDate = mySwitch7am.on ? myDatePicker.date.fireDateAt7am         : NSDate().xDays(+36500)
    
    func toggleSwitch8am()
        localNotification8am.alertBody = "Here is the eight o'clock notification"
        localNotification8am.fireDate = mySwitch8am.on ? myDatePicker.date.fireDateAt8am         : NSDate().xDays(+36500)
    
    override func viewDidLoad() 
        super.viewDidLoad()
        datePicker()
        datePickerDefaultDate()
        notificationsOptions7am()
        notificationsOptions8am()
    
    override func didReceiveMemoryWarning() 
        super.didReceiveMemoryWarning()
    
    @IBAction func switchedOn7am(sender: AnyObject) 
        toggleSwitch7am()
    
    @IBAction func switchedOn8am(sender: AnyObject) 
        toggleSwitch8am()
    

扩展：

    import Foundation
    extension NSDate 
        func xDays(x:Int) -> NSDate 
            return NSCalendar.currentCalendar().dateByAddingUnit(.CalendarUnitDay, value: x, toDate: self, options: nil)!
        
        var day:            Int  return NSCalendar.currentCalendar().components(NSCalendarUnit.CalendarUnitDay,           fromDate: self).day           
        var month:          Int  return NSCalendar.currentCalendar().components(NSCalendarUnit.CalendarUnitMonth,         fromDate: self).month         
        var year:           Int  return NSCalendar.currentCalendar().components(NSCalendarUnit.CalendarUnitYear,          fromDate: self).year          
        var fireDateAt7am: NSDate     return NSCalendar.currentCalendar().dateWithEra(1, year: year, month: month, day: day, hour: 7, minute: 0, second: 0, nanosecond: 0)! 
        var fireDateAt8am: NSDate     return NSCalendar.currentCalendar().dateWithEra(1, year: year, month: month, day: day, hour: 8, minute: 0, second: 0, nanosecond: 0)! 
        func fireDateAt(hr:Int, min:Int) -> NSDate 
            return NSCalendar.currentCalendar().dateWithEra(1, year: year, month: month, day: day, hour: hr, minute: min, second: 0, nanosecond: 0)!
        
    

【讨论】：

哦！然后我只需连接下一个开关并将开火日期更改为 fireDateAt8am？