已安排本地通知，但未在挂起和未运行模式下传递

Posted 2023-02-24

【中文标题】已安排本地通知，但未在挂起和未运行模式下传递

【英文标题】：Local notifications are scheduled, but not delivered in suspended and not running modes

【发布时间】：2019-04-10 10:22:11

【问题描述】：

我想为我的应用程序添加后台提取，当静默远程通知到达时（内容可用：1），所以当它到达时，我在本地触发后台更新，检查新数据，如果是，则生成本地为用户推送通知。但是，它只有在应用程序处于后台、未挂起或未运行状态时才能完美运行。在那些状态下，我让它获取一些数据，但没有触发本地通知（它是在设备的控制台中创建的），有什么想法可以解决这个问题吗？

这是我生成推送的代码（按预期工作）

func generatePushNotification(with title: String, body: String, badge: Int = 1)
        let content = UNMutableNotificationContent()
        content.badge = badge as NSNumber
        content.title = title
        content.body = body
        content.sound = UNNotificationSound.default
        let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 1,
                                                        repeats: false)
        let notification = UNNotificationRequest(identifier: "pushLocal", content: content, trigger: trigger)
        UNUserNotificationCenter.current().add(notification)  (error) in
            if error != nil 
                NSLog((error?.localizedDescription)!)
            
        
    

这是我的 notificationFetch 代码

func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any], fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) 
        networkManager.getScheduleForGroup(group)  (resp, error) in
            self.generatePushNotification(with: "Back", body: "ground")
            completionHandler(.newData)

        
        completionHandler(.noData)

    

这是控制台输出：

dasd    CANCELED: com.apple.pushLaunch.**:297454 <private>!

SpringBoard    Saving notification 802A-AE8C: 0 [ hasAlertContent: 0, shouldPresentAlert: 1 ]

SpringBoard  Delivered user visible push notification 802A-AE8C

SpringBoard  Load 0 pending notification dictionaries

SpringBoard  Adding notification 802A-AE8C to destinations 0 [ hasAlertContent: 0, shouldPresentAlert: 1 hasSound: 0 shouldPlaySound: 1 ]

【问题讨论】：

静默远程通知确实意味着推送通知而不是本地通知。

@AnkitJayaswal 你是什么意思？

静默通知适用于带有content-available 键的推送通知，但不适用于本地通知。更多详情 - ***.com/questions/44944383/…

@AnkitJayaswal 我不想要无声的本地通知，而是希望它带有声音。静音是我的远程通知。

你不应该在闭包之外调用completionHandler(.noData)。这向 ios 表明您没有数据，将导致您的应用在网络操作完成之前再次暂停

【参考方案1】：

let content = UNMutableNotificationContent()
content.title = title
content.body = body
content.sound = UNNotificationSound.default()

var dateComponents = Calendar.current.dateComponents([.hour, .minute, .second], from: Date())

let trigger = UNCalendarNotificationTrigger(dateMatching: dateComponents, repeats: false)

let request = UNNotificationRequest(identifier: identifier, content: content, trigger: trigger)

UNUserNotificationCenter.current().add(request, withCompletionHandler:  (error) in
    if let error = error
        print(error)
    
)
UNUserNotificationCenter.current().delegate = self

使用这个

【讨论】：

这没有帮助

让 notification = UILocalNotification() notification.fireDate = NSDate(timeIntervalSinceNow: 1) as Date notification.alertBody = body notification.alertAction = title notification.soundName = UILocalNotificationDefaultSoundName UIApplication.shared.scheduleLocalNotification(notification) 使用这个

【参考方案2】：

//AppDelegate

UNUserNotificationCenter.current().delegate = self
let authOptions: UNAuthorizationOptions = [.alert, .badge, .sound]
        UNUserNotificationCenter.current().requestAuthorization(
            options: authOptions,
            completionHandler: _, _ in )


application.registerUserNotificationSettings(UIUserNotificationSettings(types: [.alert, .badge, .sound], categories: nil))

//在视图控制器中

 let content = UNMutableNotificationContent()
        content.title = “Notification Title”
        content.body = “Notification Body”
        content.sound = UNNotificationSound.default()
        content.badge = 1

        let date = Date()

        let localDate = date.toLocalTime()

        var triggerDaily = Calendar.current.dateComponents([.hour,.minute,.second,], from: localDate)
        triggerDaily.hour = 22
        triggerDaily.minute = 00
        triggerDaily.second = 00

        let trigger = UNCalendarNotificationTrigger(dateMatching: triggerDaily, repeats: true)

        let identifier = "Local Notification"
        let request = UNNotificationRequest(identifier: identifier, content: content, trigger: trigger)

        UNUserNotificationCenter.current().add(request)  (error) in
            if let error = error 
                print("Error \(error.localizedDescription)")
            
        

//添加扩展以转换时间

extension Date  

  func convertToGlobalTime() -> Date 
     let currentTimezone = TimeZone.current
     let interval = -TimeInterval(currentTimezone.secondsFromGMT(for: self))
     return Date(timeInterval: interval, since: self)
 

 func convertToLocalTime() -> Date 
     let currentTimezone = TimeZone.current
     let interval = TimeInterval(currentTimezone(for: self))
     return Date(timeInterval: interval, since: self)