swiftThread 1: Exception: "-[UIViewController tableView:numberOfRowsInSection:]: unrecognized select

Question

下記のコードでビルドした際にタイトルに書いてあるエラーが出ます。

import UIKit

class technique:UIViewController,UITableViewDelegate,UITableViewDataSource {
    
    let technique = ["FX","te"]
    
    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
    }
    
    func tableView(_ tableView:UITableView,numberOfRowsInSection section: Int) -> Int {
    return technique.count
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell: UITableViewCell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
        cell.textLabel!.text = technique[indexPath.row]
        return cell
    }
    

  

}

コンソールは下記です。

2020-06-13 01:00:35.366275+0900 FX quiz[43814:3477719] [Storyboard] Unknown class technique in Interface Builder file.
2020-06-13 01:00:35.417269+0900 FX quiz[43814:3477719] -[UIViewController tableView:numberOfRowsInSection:]: unrecognized selector sent to instance 0x7fc28e405f90
2020-06-13 01:00:35.473637+0900 FX quiz[43814:3477719] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UIViewController tableView:numberOfRowsInSection:]: unrecognized selector sent to instance 0x7fc28e405f90'
*** First throw call stack:
(
	0   CoreFoundation                      0x00007fff23e3cf0e __exceptionPreprocess + 350
	1   libobjc.A.dylib                     0x00007fff50ba89b2 objc_exception_throw + 48
	2   CoreFoundation                      0x00007fff23e5dc34 -[NSObject(NSObject) doesNotRecognizeSelector:] + 132
	3   UIKitCore                           0x00007fff48cbab74 -[UIResponder doesNotRecognizeSelector:] + 302
	4   CoreFoundation                      0x00007fff23e4190c ___forwarding___ + 1436
	5   CoreFoundation                      0x00007fff23e43bf8 _CF_forwarding_prep_0 + 120
	6   UIKitCore                           0x00007fff48eb0463 -[UITableView _numberOfRowsInSection:] + 62
	7   UIKitCore                           0x00007fff48ec4ee2 -[UISectionRowData refreshWithSection:tableView:tableViewRowData:] + 1960
	8   UIKitCore                           0x00007fff48ecab2e -[UITableViewRowData rectForFooterInSection:heightCanBeGuessed:] + 94
	9   UIKitCore                           0x00007fff48ecadbb -[UITableViewRowData heightForTable] + 54
	10  UIKitCore                           0x00007fff48e6300a -[UITableView _updateContentSizeSkippingContentOffsetAdjustment:] + 354
	11  UIKitCore                           0x00007fff48e9107b -[UITableView _rebuildGeometryForcingRowDataUpdate:skipContentOffsetAdjustment:updateImmediatelyIfPossible:] + 138
	12  UIKitCore                           0x00007fff48e8ee83 -[UITableView setLayoutMargins:] + 317
	13  UIKitCore                           0x00007fff48e8ed23 -[UITableView _setDefaultLayoutMargins:] + 89
	14  UIKitCore                           0x00007fff48e8eca1 -[UITableView didMoveToWindow] + 352
	15  UIKitCore                           0x00007fff49189f78 -[UIView(Internal) _didMoveFromWindow:toWindow:] + 2140
	16  UIKitCore                           0x00007fff491006fb -[UIScrollView _didMoveFromWindow:toWindow:] + 88
	17  UIKitCore                           0x00007fff491899ec -[UIView(Internal) _didMoveFromWindow:toWindow:] + 720
	18  UIKitCore                           0x00007fff491899ec -[UIView(Internal) _didMoveFromWindow:toWindow:] + 720
	19  UIKitCore                           0x00007fff4917d319 __45-[UIView(Hierarchy) _postMovedFromSuperview:]_block_invoke + 130
	20  UIKitCore                           0x00007fff4917d21e -[UIView(Hierarchy) _postMovedFromSuperview:] + 800
	21  UIKitCore                           0x00007fff4918c7b4 -[UIView(Internal) _addSubview:positioned:relativeTo:] + 1718
	22  UIKitCore                           0x00007fff486076d5 -[UIViewControllerBuiltinTransitionViewAnimator animateTransition:] + 3682
	23  UIKitCore                           0x00007fff4860f516 ___UIViewControllerTransitioningRunCustomTransition_block_invoke_2 + 59
	24  UIKitCore                           0x00007fff48732073 +[UIInputResponderController _pinInputViewsForInputResponderController:onBehalfOfResponder:duringBlock:] + 99
	25  UIKitCore                           0x00007fff4860f4a5 ___UIViewControllerTransitioningRunCustomTransition_block_invoke.645 + 180
	26  UIKitCore                           0x00007fff49185403 +[UIView(Animation) _setAlongsideAnimations:toRunByEndOfBlock:] + 175
	27  UIKitCore                           0x00007fff4860f32b _UIViewControllerTransitioningRunCustomTransition + 553
	28  UIKitCore                           0x00007fff484f1bb7 __56-[UIPresentationController runTransitionForCurrentState]_block_invoke.465 + 2598
	29  UIKitCore                           0x00007fff484f7569 +[UIPresentationController _scheduleTransition:] + 79
	30  UIKitCore                           0x00007fff484f0f26 -[UIPresentationController runTransitionForCurrentState] + 1702
	31  UIKitCore                           0x00007fff484ee058 -[UIPresentationController _presentWithAnimationController:interactionController:target:didEndSelector:] + 1033
	32  UIKitCore                           0x00007fff48cc4452 -[UIWindow addRootViewControllerViewIfPossible] + 571
	33  UIKitCore                           0x00007fff48cc3986 -[UIWindow _updateLayerOrderingAndSetLayerHidden:actionBlock:] + 219
	34  UIKitCore                           0x00007fff48cc4a11 -[UIWindow _setHidden:forced:] + 362
	35  UIKitCore                           0x00007fff48cd7e4d -[UIWindow _mainQueue_makeKeyAndVisible] + 42
	36  UIKitCore                           0x00007fff48ef9d63 -[UIWindowScene _makeKeyAndVisibleIfNeeded] + 202
	37  UIKitCore                           0x00007fff481e7d60 +[UIScene _sceneForFBSScene:create:withSession:connectionOptions:] + 1405
	38  UIKitCore                           0x00007fff48c87d2d -[UIApplication _connectUISceneFromFBSScene:transitionContext:] + 1019
	39  UIKitCore                           0x00007fff48c88064 -[UIApplication workspace:didCreateScene:withTransitionContext:completion:] + 291
	40  UIKitCore                           0x00007fff487da8dc -[UIApplicationSceneClientAgent scene:didInitializeWithEvent:completion:] + 361
	41  FrontBoardServices                  0x00007fff36cacd2e -[FBSSceneImpl _callOutQueue_agent_didCreateWithTransitionContext:completion:] + 419
	42  FrontBoardServices                  0x00007fff36cd2dc1 __86-[FBSWorkspaceScenesClient sceneID:createWithParameters:transitionContext:completion:]_block_invoke.154 + 102
	43  FrontBoardServices                  0x00007fff36cb7757 -[FBSWorkspace _calloutQueue_executeCalloutFromSource:withBlock:] + 220
	44  FrontBoardServices                  0x00007fff36cd2a52 __86-[FBSWorkspaceScenesClient sceneID:createWithParameters:transitionContext:completion:]_block_invoke + 355
	45  libdispatch.dylib                   0x000000010eb31e8e _dispatch_client_callout + 8
	46  libdispatch.dylib                   0x000000010eb34da2 _dispatch_block_invoke_direct + 300
	47  FrontBoardServices                  0x00007fff36cf86e9 __FBSSERIALQUEUE_IS_CALLING_OUT_TO_A_BLOCK__ + 30
	48  FrontBoardServices                  0x00007fff36cf83d7 -[FBSSerialQueue _queue_performNextIfPossible] + 441
	49  FrontBoardServices                  0x00007fff36cf88e6 -[FBSSerialQueue _performNextFromRunLoopSource] + 22
	50  CoreFoundation                      0x00007fff23da0d31 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
	51  CoreFoundation                      0x00007fff23da0c5c __CFRunLoopDoSource0 + 76
	52  CoreFoundation                      0x00007fff23da048c __CFRunLoopDoSources0 + 268
	53  CoreFoundation                      0x00007fff23d9b02e __CFRunLoopRun + 974
	54  CoreFoundation                      0x00007fff23d9a944 CFRunLoopRunSpecific + 404
	55  GraphicsServices                    0x00007fff38ba6c1a GSEventRunModal + 139
	56  UIKitCore                           0x00007fff48c8b9ec UIApplicationMain + 1605
	57  FX quiz                             0x000000010e8b403b main + 75
	58  libdyld.dylib                       0x00007fff51a231fd start + 1
	59  ???                                 0x0000000000000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb) 

Comments

[hoshi-takanori]

storyboard の view controller のクラス指定が間違ってるのでは。