Question

我在目标应用程序中实现了 NotificationServiceExtension ，并且运行正常。

创建AppgroupID

 lazy var persistentStoreCoordinator: NSPersistentStoreCoordinator? = {

     var coordinator: NSPersistentStoreCoordinator? = NSPersistentStoreCoordinator(managedObjectModel: self.managedObjectModel)
     let options = [
         NSMigratePersistentStoresAutomaticallyOption: true,
         NSInferMappingModelAutomaticallyOption: true
         ]

     let oldStoreUrl = self.applicationDocumentsDirectory.appendingPathComponent("Model.sqlite")
     let directory: NSURL = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: AppGroupID)! as NSURL
     let newStoreUrl = directory.appendingPathComponent("Model.sqlite")!

     var targetUrl : URL? = nil
     var needMigrate = false
     var needDeleteOld = false


     if FileManager.default.fileExists(atPath: oldStoreUrl.path){
        needMigrate = true
        targetUrl = oldStoreUrl
     }
     if FileManager.default.fileExists(atPath: newStoreUrl.path){
        needMigrate = false
        targetUrl = newStoreUrl

        if FileManager.default.fileExists(atPath: oldStoreUrl.path){
            needDeleteOld = true
        }
     }
     if targetUrl == nil {
        targetUrl = newStoreUrl
     }

     if needMigrate {
        do {
            try coordinator?.addPersistentStore(ofType: NSSQLiteStoreType, configurationName: nil, at: targetUrl!, options: options) 
            if let store = coordinator?.persistentStore(for: targetUrl!) {
                do {
                    try coordinator?.migratePersistentStore(store, to: newStoreUrl, options: options, withType: NSSQLiteStoreType)

                } catch let error {
                    print("migrate failed with error : \(error)")
                }
            }
        } catch let error {
            //CrashlyticsHelper.reportCrash(err: error as NSError, strMethodName: "migrateStore")
            print(error)
        }
    }

    if needDeleteOld {
        self.deleteDocumentAtUrl(url: oldStoreUrl)
        self.deleteDocumentAtUrl(url: self.applicationDocumentsDirectory.appendingPathComponent("Model.sqlite-shm"))
        self.deleteDocumentAtUrl(url: self.applicationDocumentsDirectory.appendingPathComponent("Model.sqlite-wal"))
    }

    do {
        try coordinator!.addPersistentStore(ofType: NSSQLiteStoreType, configurationName: nil, at: targetUrl, options: options)
    } catch var error as NSError {
        coordinator = nil
        NSLog("Unresolved error \(error), \(error.userInfo)")
        abort()
    } catch {
        fatalError()
    }
    return coordinator

}() 

  **EDIT:**

lazy var applicationDocumentsDirectory: URL = {

let urls = Foundation.FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)
return urls[urls.count-1]}()

override func didReceive(_ request: UNNotificationRequest, withContentHandler contentHandler: @escaping (UNNotificationContent) -> Void) {

 self.contentHandler = contentHandler
 bestAttemptContent = (request.content.mutableCopy() as? 
 UNMutableNotificationContent)

if let bestAttemptContent = bestAttemptContent {
    // Modify the notification content here...
    print("Mutable Data %@",bestAttemptContent)
    bestAttemptContent.title = "\(bestAttemptContent.title)"
    //bestAttemptContent.title = "Notification"

     let apnsDic = bestAttemptContent.userInfo["aps"] as! NSDictionary
        // NotificationManager.sharedInstance.handlePushNotification(byUserTapped: true, content: apnsDic)
        contentHandler(bestAttemptContent)

} }

  // Storing APNS dictionary into database from extension

  func handlePushNotification(byUserTapped : Bool,content : NSDictionary) {

 let moduelDataDic = content.mutableCopy() as! NSMutableDictionary

let entity2 =  NSEntityDescription.entity(forEntityName: "TextMessage",
                                          in: CoreDataStorage.sharedInstance.mainQueueCtxt!)

let textMsg = NSManagedObject(entity: entity2!,
                              insertInto: CoreDataStorage.sharedInstance.mainQueueCtxt) as? TextMessage

let trimmedMessage = (moduelDataDic.object(forKey: "msgbody")! as AnyObject).trimmingCharacters(in: .whitespacesAndNewlines)

textMsg?.message = trimmedMessage
msgInfo?.toText = textMsg
rosterInfo.time = composeMsgDate as Date
rosterInfo.addToToMessageInfo(NSSet(object: msgInfo!))

DispatchQueue.main.async {

    let context = CoreDataStorage.sharedInstance.mainQueueCtxt
    if let moc = context {
        if moc.hasChanges {
            do {
                try moc.save()
            } catch {
                let nserror = error as NSError
                print("Could not save In NotficationManager \(nserror), \(nserror.userInfo)")
            }
        }
    }

} }

在应用程序后台模式这里我获取存储在NotificationServiceExtension的上述方法中的数据，在我的结果中，我可以从manageObject表（messageInfo）获取数据，但没有任何数据到关系＆＃34;让setArray = rosterInfo？。 toMessageInfo＆＃34;

let resultPredicate = NSPredicate(format: "messageID == %@", 
moduelDataDic.object(forKey: "message_id")! as! CVarArg)

let messageInfoAry = 
self.fetchMessagesFromCoreDataWithPredicate(resultPredicate: 
resultPredicate, sortDescriptorKey: "time", isAscending: true, 
fetchLimit: false, managedContext: self.getManageObjectContext())
if messageInfoAry.count > 0 {

let rosterInfo = (messageInfoAry[0] as! MessageInfo).toRoster
let msgInfo = messageInfoAry[0] as! MessageInfo

// Here i don't see msgInfo in this relationship but after relaunching my application i can able to see that same object

let setArray = rosterInfo?.toMessageInfo

任何人的帮助？

Answer 1

尝试将以下代码添加到AppDelegate课程并进行测试。

    func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any], fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {

    completionHandler(.newData)
    performSelector(inBackground: #selector(saveNewNotificationInBackground(userInfo:)), with: userInfo)
}

@objc func saveNewNotificationInBackground(userInfo: [AnyHashable: Any]) -> Void {
    //save notification using core data
}

如何从NotificationServiceExtension

1 个答案: