致命错误：值无法从Swift类型桥接到Objective-C类型 [英] fatal error: value failed to bridge from Swift type to a Objective-C type

问题描述

我想使用新的 NSBatchUpdateRequest 向核心数据写一些信息，我得到这个错误。有人可以解释这里发生了什么吗？听起来像我无法将Swift转换为Objective-C类型值？

 致命错误：值无法从Swift类型为Objective-C类型
  

这是我发生错误的代码块： / p>

  func updateUser（user：User）{
 var batchRequest = NSBatchUpdateRequest（entityName：User）
 
 if doesUserExist（user.userId）{
 batchRequest.predicate = NSPredicate（format：userId ==％@，user.userId）
} 
 
 batchRequest .propertiesToUpdate = [
userId：user.userId，
username：user.username，
email：user.email，
fullName：user。 fullName，
gender：user.gender，
birthdate：user.birthdate，
zipCode：user.zipCode，
aboutMe：user.aboutMe， 
iAm：user.iAm，
iLike：user.iLike，
favoriteWeapon：user.favoriteWeapon，
dateCreated：user.dateCreated，
lookingFor：user.lookingFor，
minAge：user.minAge，
maxAge：user.maxAge，
distance：user.distance，
 gameOwned：user.gameOwned，
gameSetting：user.gameSetting，
allowedList：user.allowedList，
blockedList：user.blockedList，
avatarType ：user.avatarType 
] 
 batchRequest.resultType = .UpdatedObjectsCountResultType 
 var error：NSError？ 
 var results = self.managedObjectContext！.executeRequest（batchRequest，error：& error）as NSBatchUpdateResult 
 if error == nil {
 println（Updated User：\（user.username ）\（results.result））
} 
 else {
 println（更新用户错误：\（错误？.localizedDescription））
} 
} 
  

我得到错误的代码行是：

  var results = self.managedObjectContext！.executeRequest（batchRequest，error：& error）as NSBatchUpdateResult 
  

用户对象

  class User：NSManagedObject {
 
 @NSManaged var aboutMe：String 
 @NSManaged var avatarType：String 
 @NSManaged var birthdate：NSDate 
 @NSManaged var cityState：String 
 @NSManaged var dateCreated：NSDate 
 @NSManaged var distance：NSNumber 
 @NSManaged var email：String 
 @NSManaged var favoriteWeapon：String 
 @NSManaged var fullName：String 
 @NSManaged var gameOwned：AnyObject 
 @NSManaged var gameSetting：AnyObject 
 @NSManaged var gender：String 
 @NSManaged var iAm：String 
 @NSManaged var iLike：String 
 @NSManaged var lastMatch：NSDate 
 @NSManaged var lookingFor：String 
 @NSManaged var maxAge：NSNumber 
 @NSManaged var minAge：NSNumber 
 @NSManaged var pictureUrl：String 
 @NSManaged var userId：String 
 @NSManaged var username：String 
 @NSManaged var zipCode：String 
 @NSManaged var allowedList：String 
 @NSManaged var blockedList：String 
  

}

解决方案>

您应该将所有包含数据的变量转换为String数据类型。也许你的AnyObject或Date数据类型正在创建问题。

I am trying to write some info to Core Data using the new NSBatchUpdateRequest and can't figure out why I am getting this error. Can someone explain what is going on here? It sounds like I am having trouble converting a Swift to Objective-C type value?

fatal error: value failed to bridge from Swift type to Objective-C type

Here is my block of code that the error is taking place in:

func updateUser(user: User) {
    var batchRequest = NSBatchUpdateRequest(entityName: "User")

    if doesUserExist(user.userId) {
        batchRequest.predicate = NSPredicate(format: "userId == %@", user.userId)
    }

    batchRequest.propertiesToUpdate = [
        "userId" : user.userId,
        "username" : user.username,
        "email" : user.email,
        "fullName" : user.fullName,
        "gender" : user.gender,
        "birthdate" : user.birthdate,
        "zipCode" : user.zipCode,
        "aboutMe" : user.aboutMe,
        "iAm" : user.iAm,
        "iLike" : user.iLike,
        "favoriteWeapon" : user.favoriteWeapon,
        "dateCreated" : user.dateCreated,
        "lookingFor" : user.lookingFor,
        "minAge" : user.minAge,
        "maxAge" : user.maxAge,
        "distance" : user.distance,
        "gameOwned" : user.gameOwned,
        "gameSetting" : user.gameSetting,
        "allowedList" : user.allowedList,
        "blockedList" : user.blockedList,
        "avatarType" : user.avatarType
    ]
    batchRequest.resultType = .UpdatedObjectsCountResultType
    var error : NSError?
    var results = self.managedObjectContext!.executeRequest(batchRequest, error: &error) as NSBatchUpdateResult
    if error == nil {
        println("Updated User: \(user.username) \(results.result)")
    }
    else {
        println("Update User Error: \(error?.localizedDescription)")
    }
}

The line of code that I am getting the error on is:

var results = self.managedObjectContext!.executeRequest(batchRequest, error: &error) as NSBatchUpdateResult

User Object

class User: NSManagedObject {

@NSManaged var aboutMe: String
@NSManaged var avatarType: String
@NSManaged var birthdate: NSDate
@NSManaged var cityState: String
@NSManaged var dateCreated: NSDate
@NSManaged var distance: NSNumber
@NSManaged var email: String
@NSManaged var favoriteWeapon: String
@NSManaged var fullName: String
@NSManaged var gameOwned: AnyObject
@NSManaged var gameSetting: AnyObject
@NSManaged var gender: String
@NSManaged var iAm: String
@NSManaged var iLike: String
@NSManaged var lastMatch: NSDate
@NSManaged var lookingFor: String
@NSManaged var maxAge: NSNumber
@NSManaged var minAge: NSNumber
@NSManaged var pictureUrl: String
@NSManaged var userId: String
@NSManaged var username: String
@NSManaged var zipCode: String
@NSManaged var allowedList: String
@NSManaged var blockedList: String

}

解决方案

You should convert all your variables containing data to String data type. Maybe your 'AnyObject' or 'Date' datatypes are creating the problem.

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