如何在swift 3中每天在特定时间触发本地通知

Posted 2023-02-24

【中文标题】如何在swift 3中每天在特定时间触发本地通知

【英文标题】：How to trigger a local notification at particular time daily in swift 3

【发布时间】：2016-11-10 05:45:46

【问题描述】：

我是 ios 开发的新手，但已经创建了应用程序，并且我正在尝试为特定时间（例如（上午 10 点））创建每日通知。如果我将移动设备时间设置为上午 10 点，现在通知会太多。我只想在给定的特定时间（即上午 10 点）触发一次本地通知，并且我想每天重复一次。每天重复通知的最佳方法是什么？

这是我的代码

func fire()
    let dateComp:NSDateComponents = NSDateComponents()
    dateComp.hour = 10
    dateComp.minute = 00
    dateComp.timeZone = NSTimeZone.systemTimeZone()
    let calender:NSCalendar = NSCalendar(calendarIdentifier: NSCalendarIdentifierIndian)!
    let date:NSDate = calender.dateFromComponents(dateComp)!
    let localNotificationSilent = UILocalNotification()
    localNotificationSilent.fireDate = date
    localNotificationSilent.repeatInterval =  NSCalendarUnit.Day
    localNotificationSilent.alertBody = "Started!"
    localNotificationSilent.alertAction = "swipe to hear!"
    localNotificationSilent.timeZone = NSCalendar.currentCalendar().timeZone
   localNotificationSilent.category = "PLAY_CATEGORY"
   UIApplication.sharedApplication().scheduleLocalNotification(localNotificationSilent)    

【问题讨论】：

Repeating local notification daily at a set time with swift的可能重复

【参考方案1】：

在 Swift 3、iOS 10 中工作：

UNUserNotificationCenter.current().requestAuthorization(
    options: [.alert, .sound, .badge], completionHandler: userDidAllow, error in
    //if userDidAllow : do something if you want to 
)

//Set notification to trigger 11:30AM everyday
var dateComponents = DateComponents()
dateComponents.hour = 11
dateComponents.minute = 30
let trigger = UNCalendarNotificationTrigger(dateMatching: dateComponents, repeats: true)

//Set your content
let content = UNMutableNotificationContent()
content.title = "Your notification title"
content.body = "Your notification body"

let request = UNNotificationRequest(
    identifier: "yourIdentifier", content: content, trigger: trigger
)
UNUserNotificationCenter.current().add(request, withCompletionHandler: nil)

【讨论】：

嘿，我无法在特定时间触发通知。我做了同样的代码。

【参考方案2】：

您的问题是开火日期不正确

你可以像这样创建开火日期

    let today = Date()
    let calendar = NSCalendar.current
    let components = calendar.dateComponents([.day, .month, .year], from: today)

    var dateComp:DateComponents = DateComponents()
    dateComp.day = components.day
    dateComp.month = components.month
    dateComp.year = components.year
    dateComp.hour = 10
    dateComp.minute = 00
    let date = calendar.date(from: dateComp)

如果你想验证开火日期，那么你可以这样检查

    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "dd MM yyyy hh:mm:ss"
    let fireDate = dateFormatter.string(from: date!)
    print("fireDate: \(fireDate)")

现在是时候为本地通知设置触发日期了

localNotificationSilent.fireDate = date
// no need to set time zone Remove bellow line
localNotificationSilent.timeZone = NSCalendar.currentCalendar().timeZone

通知代码

    let localNotificationSilent = UILocalNotification()
    localNotificationSilent.fireDate = date
    localNotificationSilent.repeatInterval = .day
    localNotificationSilent.alertBody = "Started!"
    localNotificationSilent.alertAction = "swipe to hear!"
    localNotificationSilent.category = "PLAY_CATEGORY"
    UIApplication.shared.scheduleLocalNotification(localNotificationSilent)

希望对你有帮助。

【讨论】：

如何每天重复？？

let today = NSDate() let calendar = NSCalendar.currentCalendar() let components = calendar.components([.Day, .Month, .Year], fromDate: today) let dateComp:NSDateComponents = NSDateComponents () dateComp.day = components.day dateComp.month = components.month dateComp.year = components.year dateComp.hour = 10 dateComp.minute = 00 let date = calendar.dateFromComponents(dateComp) 我已经更改了这样的代码 bez ur代码 dosent 支持 swift3，如果我将设备设置为上午 10 点，现在会收到 3 个通知

@jigneshVadadoriya 如何从上面的代码限制周六和周日的通知。我的意思是不想在周六和周日开火。

@User558 您需要更改上面的代码，例如 localNotificationSilent.repeatInterval = .weekday 或 localNotificationSilent.repeatInterval = .weekdayOrdinal 可能会对您有所帮助