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私は自分のデータをコアデータデータベースからフェッチし、オブジェクトに入れて、次にコールバックする配列に入れようとしています。私はgetCoffeeBrandsFromDBを実行するとSwift 3 - Core Data - オブジェクトを作成する
func getCoffeeBrandsFromDB(callback: @escaping (_ dbCoffeeBrands: Array<Any>)->()) {
//create a fetch request, telling it about the entity
print("running getCBFDB")
var coffeeBrandArray = Array<Any>()
let fetchRequest: NSFetchRequest<NSFetchRequestResult> = NSFetchRequest(entityName: "CoffeeBrand")
do {
let searchResults = try getContext().fetch(fetchRequest)
print ("num of results = \(searchResults.count)")
for brands in searchResults as! [NSManagedObject] {
let brand = CoffeeBrand()
brand.dataBaseId = brands.value(forKey: "dataBaseId") as! Int64
brand.brandName = brands.value(forKey: "brandName") as? String
brand.numberOfCoffeesNeeded = brands.value(forKey: "numberOfCoffeesNeeded") as! Int32
coffeeBrandArray.append(brand)
print("brands virker med \(brand.brandName!)")
}
print("CcffeeBrandArray.count is: \(coffeeBrandArray.count)")
callback(coffeeBrandArray)
} catch {
print("Error with request: \(error)")
}
}
私はこのエラーログを取得する：
running getCBFDB
num of results = 4
2017-02-08 15:47:02.179211 Keebin_development_1[8373:626945] [error] error: CoreData: error: Failed to call designated initializer on NSManagedObject class 'CoffeeBrand'
CoreData: error: CoreData: error: Failed to call designated initializer on NSManagedObject class 'CoffeeBrand'
2017-02-08 15:47:02.180 Keebin_development_1[8373:626945] -[CoffeeBrand setDataBaseId:]: unrecognized selector sent to instance 0x608000279e80
2017-02-08 15:47:02.189 Keebin_development_1[8373:626945] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[CoffeeBrand setDataBaseId:]: unrecognized selector sent to instance 0x608000279e80'
*** First throw call stack:
(
0 CoreFoundation 0x0000000110c36d4b __exceptionPreprocess + 171
1 libobjc.A.dylib 0x000000011027721e objc_exception_throw + 48
2 CoreFoundation 0x0000000110ca6f04 -[NSObject(NSObject) doesNotRecognizeSelector:] + 132
3 CoreFoundation 0x0000000110bbc005 ___forwarding___ + 1013
4 CoreFoundation 0x0000000110bbbb88 _CF_forwarding_prep_0 + 120
5 Keebin_development_1 0x000000010fc20e5c _TF20Keebin_development_121getCoffeeBrandsFromDBFT8callbackFGSaP__T__T_ + 1804
6 Keebin_development_1 0x000000010fc2d314 _TFC20Keebin_development_126LoyaltyCardsViewController11viewDidLoadfT_T_ + 180
7 Keebin_development_1 0x000000010fc2d5e2 _TToFC20Keebin_development_126LoyaltyCardsViewController11viewDidLoadfT_T_ + 34
8 UIKit 0x00000001111fca3d -[UIViewController loadViewIfRequired] + 1258
9 UIKit 0x000000011123d28f -[UINavigationController _layoutViewController:] + 55
10 UIKit 0x000000011123db77 -[UINavigationController _updateScrollViewFromViewController:toViewController:] + 471
11 UIKit 0x000000011123dcee -[UINavigationController _startTransition:fromViewController:toViewController:] + 133
12 UIKit 0x000000011123eef9 -[UINavigationController _startDeferredTransitionIfNeeded:] + 874
13 UIKit 0x000000011123ffdb -[UINavigationController __viewWillLayoutSubviews] + 58
14 UIKit 0x0000000111436dd7 -[UILayoutContainerView layoutSubviews] + 223
15 UIKit 0x000000011111fab8 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 1237
16 QuartzCore 0x00000001161ffbf8 -[CALayer layoutSublayers] + 146
17 QuartzCore 0x00000001161f3440 _ZN2CA5Layer16layout_if_neededEPNS_11TransactionE + 366
18 QuartzCore 0x00000001161f32be _ZN2CA5Layer28layout_and_display_if_neededEPNS_11TransactionE + 24
19 QuartzCore 0x0000000116181318 _ZN2CA7Context18commit_transactionEPNS_11TransactionE + 280
20 QuartzCore 0x00000001161ae3ff _ZN2CA11Transaction6commitEv + 475
21 UIKit 0x0000000111053d9b _UIApplicationFlushRunLoopCATransactionIfTooLate + 206
22 UIKit 0x000000011185e77c __handleEventQueue + 5672
23 CoreFoundation 0x0000000110bdb761 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
24 CoreFoundation 0x0000000110bc098c __CFRunLoopDoSources0 + 556
25 CoreFoundation 0x0000000110bbfe76 __CFRunLoopRun + 918
26 CoreFoundation 0x0000000110bbf884 CFRunLoopRunSpecific + 420
27 GraphicsServices 0x00000001152f9a6f GSEventRunModal + 161
28 UIKit 0x000000011105ac68 UIApplicationMain + 159
29 Keebin_development_1 0x000000010fc3fe5f main + 111
30 libdyld.dylib 0x000000011434d68d start + 1
31 ??? 0x0000000000000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)
私は私の問題がどこにあるかを見つけ出すように見えることはできません。私は自分のCoffeeBrand + CoreDataClass.SwiftとCoffeeBrand + CoreDataProperties.Swiftをエディタで作成しました.-> NSManaged Object Subclassを作成し、他のSOの質問に答えました。言及
二つのクラス：
import Foundation
import CoreData
@objc(CoffeeBrand)
public class CoffeeBrand: NSManagedObject {
}
と：
import Foundation
import CoreData
extension CoffeeBrand {
@nonobjc public class func fetchRequest() -> NSFetchRequest<CoffeeBrand> {
return NSFetchRequest<CoffeeBrand>(entityName: "CoffeeBrand");
}
@NSManaged public var brandName: String?
@NSManaged public var dataBaseId: Int64
@NSManaged public var id: Int64
@NSManaged public var numberOfCoffeesNeeded: Int32
}
誰かが私が間違っているつもりだ場所を確認することはできますか？明らかにそれは私のfor-loopにありますが、私はどこで/何を/どのように正しく行うのか分かりません。
ありがとうございます！