Question

以下是崩溃报告中的内容：-

致命异常：NSInvalidArgumentException -[_ PFFetchPlanHeader _genericValueForKey：withIndex：flags：]：无法识别的选择器已发送到实例0x282b24730

发生崩溃的代码部分：-

    let managedContext = CoreDataHelper.getNSMangedObjectContext()
    let fetchRequest = NSFetchRequest<NSFetchRequestResult>(entityName: NotificationPersistenceHelper.UserNotification_entity)
    fetchRequest.predicate = NSPredicate(format: "\(NotificationPersistenceHelper.uniqueID) = %@", argumentArray: [uniqueId!])
    do{
         let results = try managedContext.fetch(fetchRequest)

        return  !results.isEmpty
    }catch let error as NSError{
        AppDelegate.getAppDelegate().log.error("Fetch Failed : \(error.localizedDescription)")
    }
    return false

崩溃是从上述代码的以下行发生的：-

  let results = try managedContext.fetch(fetchRequest)

有关崩溃发生原因的任何帮助，人们进行了很多尝试，但未能找到崩溃的原因。有任何帮助吗？....提前谢谢

Answer 1

代替此

fetchRequest.predicate = NSPredicate(format: "\(NotificationPersistenceHelper.uniqueID) = %@", argumentArray: [uniqueId!])

尝试这个

fetchRequest.predicate = NSPredicate(format: "%K == %@", #keyPath(NotificationPersistenceHelper.uniqueID), uniqueId!)

核心数据崩溃获取

1 个答案: