在特定时间重复本地通知，并在同一时间后每隔一段时间重复一次本地通知

Posted 2023-02-24

【中文标题】在特定时间重复本地通知，并在同一时间后每隔一段时间重复一次本地通知

【英文标题】：Repeat Local Notification at a specific time and after same time at intervals

【发布时间】：2019-02-18 11:34:11

【问题描述】：

它可能与问题重复 - Repeating local notification daily at a set time with swift 但 UILocalNotifications 已被 iOS 10 弃用

我正在开发闹钟应用程序，我需要两件事 1.一次本地通知 2. 间隔一段时间后重复

/// Code used to set notification
let content = UNMutableNotificationContent()
            content.body = NSString.localizedUserNotificationString(forKey: titleOfNotification, arguments: nil)
content.userInfo=[]

工作正常的代码在准确的时间点击通知

/* ---> Working Fine --> how i can repeat this after 60 second if untouched
   let triggerDaily = Calendar.current.dateComponents([.hour,.minute,], from: dates)
   let trigger = UNCalendarNotificationTrigger(dateMatching: triggerDaily, repeats: weekdays.isEmpty == true ? false : true)
*/


/// ---> Making it Repeat After Time - How Time is passed here ?
let trigger = UNTimeIntervalNotificationTrigger.init(timeInterval: 60, repeats: true)

/// ---> Adding Request
let request = UNNotificationRequest(identifier:dateOfNotification, content: content, trigger: trigger)                   UNUserNotificationCenter.current().add(request)(error) in
                        if (error != nil)
                            print(error?.localizedDescription ?? "Nahi pta")
                         else 
                            semaphore.signal()
                            print("Successfully Done")
                        
                    

我怎样才能同时实现这两件事？

【问题讨论】：

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

UILocalNotification 已弃用

【参考方案1】：

本地通知可以使用UNUserNotificationCenter，同时重复通知可以使用performFetchWithCompletionHandler方法，该方法需要设置调用方法的最小时间间隔。

请点击链接了解更多详情 - https://developer.apple.com/documentation/uikit/core_app/managing_your_app_s_life_cycle/preparing_your_app_to_run_in_the_background/updating_your_app_with_background_app_refresh

ALSO 示例代码 -

 func scheduleLocalNotification(subtitle: String, description: String, offerID: String) 
    // Create Notification Content
    let notificationContent = UNMutableNotificationContent()

    // Configure Notification Content
    notificationContent.title = "New lead for " + subtitle
    notificationContent.body = description
    notificationContent.userInfo = ["aps":
        ["alert": [
            "title":  subtitle,
            "body": description,
            "content-available": "1"
            ],
         "ofrid": offerID,
         "type": "BLBGSync",
         "landinguri": "abc.com",
        ]
    ]



    // Create Notification Request

    let triggertime = UNTimeIntervalNotificationTrigger(timeInterval: 3600, repeats: false)

    let notificationRequest = UNNotificationRequest(identifier: "YOUR_IDENTIFIER", content: notificationContent, trigger: triggertime)


    // Add Request to User Notification Center
    UNUserNotificationCenter.current().add(notificationRequest)  (error) in
        if let error = error 
            print("Unable to Add Notification Request (\(error), \(error.localizedDescription))")
        
    

【讨论】：

UNTimeIntervalNotificationTrigger 是否会在距当前时间 60 分钟（3600 秒）后触发通知？

是的，通知将在 60 分钟后触发。请通过链接更清楚地了解 - hackingwithswift.com/example-code/system/…