ios - 如何每天每天重复几个小时的本地通知？

Question

我在google上进行了研究，并为我的应用创建了本地通知(“洗手提醒”)，但我认为我在此上犯了一个错误，因为我将其设置为每天08:00 AM-10:00 PM之间，但它在9点发送了第一条通知: 00 AM，但不会在10:00重复。

UI屏幕截图将帮助您了解我想做什么。



功能:

 func createNotify(){
    let now = Date().shortTime
    if now < endTime.shortTime{

        let content = UNMutableNotificationContent()
        content.title = titles.randomElement()!
        content.body = contents.randomElement()!
        content.sound = UNNotificationSound.default

        let interval:TimeInterval = 3600.0 // 1 minute = 60 seconds
        let trigger = UNTimeIntervalNotificationTrigger(timeInterval: interval, repeats: true)
        let request = UNNotificationRequest(identifier:"washHands", content: content, trigger: trigger)

        UNUserNotificationCenter.current().add(request)
    }else{
        print("do nothing")
    }
}

AppDelegate.swift:

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

        center.getNotificationSettings { (settings) in
            if settings.authorizationStatus != .authorized {
                self.center.requestAuthorization(options: self.options) { (accepted, error) in
                    if !accepted {
                        print("Error")
                    }
                }
            }
        }

        center.delegate = self

        BGTaskScheduler.shared.register(
            forTaskWithIdentifier: "com.labters.korona-evdekal.washHands",
            using: DispatchQueue.global()
        ) { task in
            self.scheduleLocalNotification()
        }

        FirebaseApp.configure()
        ApplicationDelegate.shared.application(application, didFinishLaunchingWithOptions: launchOptions)

        return true
    }


func scheduleLocalNotification() {
        let request = BGProcessingTaskRequest(identifier: "com.labters.korona-evdekal.washHands")
        request.requiresNetworkConnectivity = false
        request.requiresExternalPower = false
        request.earliestBeginDate = Date(timeIntervalSinceNow: 3600.0)
        do {
        try BGTaskScheduler.shared.submit(request)
            HealthView().createNotify()
        } catch {
        print("Could not schedule notification: (error)")
        }
    }

    func userNotificationCenter(
        _ center: UNUserNotificationCenter,
        willPresent notification: UNNotification,
        withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions)
        -> Void) {
        completionHandler([.alert, .badge, .sound])
    }

Answer 1

let interval:TimeInterval = 60.0 // 1 minute = 60 seconds

let trigger = UNTimeIntervalNotificationTrigger(timeInterval: interval, repeats: true) 

使用 UNTimeIntervalNotificationTrigger而不是 UNCalendarNotificationTrigger，因为要在指定的日期和时间安排本地通知的传递时使用 UNCalendarNotificationTrigger对象，而要在经过指定的秒数后安排本地通知的传递时使用 UNTimeIntervalNotificationTrigger对象。

https://developer.apple.com/documentation/usernotifications/untimeintervalnotificationtrigger