71314
swift初学者です。  
チュートリアルを参考にSNSアプリを制作しています。  
xcodeのバージョンは12.0.1です。  
シミュレーターを立ち上げ、HomeViewControllerからProfileViewControllerへ画面遷移しようとするとエラーになります。  
storyboardは使用していますが、画面遷移とタブのみで@IBOutletなどは配置していません。

以下コンソールと疑わしき箇所の内容です。

```

    2020-10-19 10:16:30.898034+0900 gyosufan[6964:470885] [Firebase/Crashlytics] Version 4.3.1
    2020-10-19 10:16:30.900738+0900 gyosufan[6964:471133] 6.28.0 - [Firebase/Analytics][I-ACS023007] Analytics v.60602000 started
    2020-10-19 10:16:30.904768+0900 gyosufan[6964:471133] 6.28.0 - [Firebase/Analytics][I-ACS023008] To enable debug logging set the following application argument: -FIRAnalyticsDebugEnabled (see http://goo.gl/RfcP7r)
    2020-10-19 10:16:30.936124+0900 gyosufan[6964:471137] [] nw_protocol_get_quic_image_block_invoke dlopen libquic failed
    2020-10-19 10:16:30.950352+0900 gyosufan[6964:471128] 6.28.0 - [Firebase/Analytics][I-ACS031025] Analytics screen reporting is enabled. Call +[FIRAnalytics setScreenName:setScreenClass:] to set the screen name or override the default screen class name. To disable screen reporting, set the flag FirebaseScreenReportingEnabled to NO (boolean) in the Info.plist
    2020-10-19 10:16:30.972012+0900 gyosufan[6964:471134] 6.28.0 - [Firebase/Analytics][I-ACS800023] No pending snapshot to activate. SDK name: app_measurement
    2020-10-19 10:16:31.041049+0900 gyosufan[6964:471144] 6.28.0 - [Firebase/Analytics][I-ACS023012] Analytics collection enabled
    2020-10-19 10:16:31.257939+0900 gyosufan[6964:471144] 6.28.0 - [Firebase/Crashlytics][I-CLS000000] Failed to download settings Error Domain=FIRCLSNetworkError Code=-5 "(null)" UserInfo={status_code=404, type=2, request_id=, content_type=text/html; charset=utf-8}
    Could not cast value of type 'gyosufan.ProfileTabsCollectionReusableView' (0x10145b908) to 'gyosufan.ProfileInfoHeaderCollectionReusableView' (0x10145bca0).
    2020-10-19 10:16:33.573986+0900 gyosufan[6964:470885] Could not cast value of type 'gyosufan.ProfileTabsCollectionReusableView' (0x10145b908) to 'gyosufan.ProfileInfoHeaderCollectionReusableView' (0x10145bca0).
    Could not cast value of type 'gyosufan.ProfileTabsCollectionReusableView' (0x10145b908) to 'gyosufan.ProfileInfoHeaderCollectionReusableView' (0x10145bca0).
    CoreSimulator 732.17 - Device: iPhone SE (2nd generation) (52F44A5A-DA3B-4922-8049-5BE63803AA59) - Runtime: iOS 14.0 (18A372) - DeviceType: iPhone SE (2nd generation)
    (lldb) 
    
```

```

    import UIKit
    
    //profile view controller
    final class ProfileViewController: UIViewController {
        
        private var collectionView: UICollectionView?
    
        override func viewDidLoad() {
            super.viewDidLoad()
            view.backgroundColor = .systemBackground
            configureNavigationBar()
            
            let layout = UICollectionViewFlowLayout()
            layout.scrollDirection = .vertical
            layout.minimumLineSpacing = 1
            layout.minimumInteritemSpacing = 1
            layout.sectionInset = UIEdgeInsets(top: 0, left: 1, bottom: 0, right: 1)
            let size = (view.width - 4)/3
            layout.itemSize = CGSize(width: size, height: size)
            collectionView = UICollectionView(frame: .zero,
                                              collectionViewLayout: layout)
            collectionView?.backgroundColor = .red
            
            //cell
            collectionView?.register(PhotoCollectionViewCell.self,
                                     forCellWithReuseIdentifier: PhotoCollectionViewCell.identifier)
            
            //header
            collectionView?.register(ProfileInfoHeaderCollectionReusableView.self,
                                     forSupplementaryViewOfKind: UICollectionView.elementKindSectionHeader, withReuseIdentifier: ProfileInfoHeaderCollectionReusableView.identifier)
            collectionView?.register(ProfileTabsCollectionReusableView.self,
                                     forSupplementaryViewOfKind: UICollectionView.elementKindSectionHeader, withReuseIdentifier: ProfileTabsCollectionReusableView.identifier)
            
            collectionView?.delegate = self
            collectionView?.dataSource = self
            guard let collectionView = collectionView else {
                return
            }
            view.addSubview(collectionView)
        }
        
        override func viewDidLayoutSubviews() {
            super.viewDidLayoutSubviews()
            collectionView?.frame = view.bounds
        }
        
        private func configureNavigationBar() {
            navigationItem.rightBarButtonItem = UIBarButtonItem(image: UIImage(systemName: "gear"),
                                                                style: .done,
                                                                target: self,
                                                                action: #selector(didTapSettingButton))
        }
        
        @objc private func didTapSettingButton() {
            let vc = SettingViewController()
            vc.title = "設定"
            navigationController?.pushViewController(vc, animated: true)
        }
    }
    
    extension ProfileViewController: UICollectionViewDelegate, UICollectionViewDataSource, UICollectionViewDelegateFlowLayout {
        func numberOfSections(in collectionView: UICollectionView) -> Int {
            return 2
        }
        
        func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
            if section == 0 {
                return 0
            }
            return 30
        }
        
        func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
            let cell = collectionView.dequeueReusableCell(withReuseIdentifier: PhotoCollectionViewCell.identifier, for: indexPath) as! PhotoCollectionViewCell
            
            cell.configure(debug: "test")
            return cell
        }
        
        func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
            collectionView.deselectItem(at: indexPath, animated: true)
        }
        
        func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView {
            
            guard kind == UICollectionView.elementKindSectionHeader else {
                //footer
                return UICollectionReusableView()
            }
            
            if indexPath.section == 1 {
                //header
                let tabControllHeader = collectionView.dequeueReusableSupplementaryView(ofKind: kind,
                                                                             withReuseIdentifier: ProfileTabsCollectionReusableView.identifier,
                                                                             for: indexPath) as! ProfileTabsCollectionReusableView
                return tabControllHeader
            }
            
            let profileHeader = collectionView.dequeueReusableSupplementaryView(ofKind: kind,
                                                                         withReuseIdentifier: ProfileInfoHeaderCollectionReusableView.identifier,
                                                                         for: indexPath) as! ProfileInfoHeaderCollectionReusableView
            return profileHeader
        }
        
        func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, referenceSizeForHeaderInSection section: Int) -> CGSize {
            if section == 0 {
                return CGSize(width: collectionView.width,
                              height: collectionView.height/3)
            }
            
            //タブのサイズ
            return CGSize(width: collectionView.width,
                          height: 65)
        }
    }
    
    
```

```

    let profileHeader = collectionView.dequeueReusableSupplementaryView(ofKind: kind,
                                                                         withReuseIdentifier: ProfileInfoHeaderCollectionReusableView.identifier,
                                                                         for: indexPath) as! ProfileInfoHeaderCollectionReusableView
            return profileHeader
    
```

ここの as の部分に

```

    Thread 1: signal SIGABRT
    
```

とエラーが出ます。

```

    import FirebaseAuth
    import UIKit
    
    class HomeViewController: UIViewController {
        
        private let tableView: UITableView = {
            let tableView = UITableView()
            tableView.register(IGFeedPostTableViewCell.self,
                               forCellReuseIdentifier: IGFeedPostTableViewCell.identifier)
            return tableView
        }()
    
        override func viewDidLoad() {
            super.viewDidLoad()
            view.addSubview(tableView)
            tableView.delegate = self
            tableView.dataSource = self
            }
        
        override func viewDidLayoutSubviews() {
            super.viewDidLayoutSubviews()
            tableView.frame = view.bounds
        }
        
        override func viewDidAppear(_ animated: Bool) {
            super.viewDidAppear(animated)
            handleNotAuthenticated()
            
        }
        
        private func handleNotAuthenticated() {
            //認証ステータスの確認
            if Auth.auth().currentUser == nil {
                
                //ログインを表示
                let loginVC = LoginViewController()
                loginVC.modalPresentationStyle = .fullScreen
                present(loginVC, animated: false)
                
            }
        }
    }
    //セクション数0
    extension HomeViewController: UITableViewDelegate, UITableViewDataSource {
        func numberOfSections(in tableView: UITableView) -> Int {
            return 0
        }
        //セル数0
        func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
            return 0
        }
        //セルを生成
        func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
            let cell = tableView.dequeueReusableCell(withIdentifier: IGFeedPostTableViewCell.identifier, for: indexPath) as! IGFeedPostTableViewCell
            return cell
        }
    }
    
    
```

```

    import UIKit
    
    class ProfileInfoHeaderCollectionReusableView: UICollectionReusableView {
          static let identifier = "ProfileInfoHeaderCollectionReusableView"
        
        override init(frame: CGRect) {
            super.init(frame: frame)
            backgroundColor = .systemBlue
            clipsToBounds = true
        }
        
        required init?(coder: NSCoder) {
            fatalError("init(coder:) has not been implemented")
        }
    }
    
```

```

    import UIKit
    
    class ProfileTabsCollectionReusableView: UICollectionReusableView {
        static let identifier = "ProfileInfoHeaderCollectionReusableView"
        
        override init(frame: CGRect) {
            super.init(frame: frame)
            backgroundColor = .orange
        }
        
        required init?(coder: NSCoder) {
            fatalError("init(coder:) has not been implemented")
        }
    }
    
```

同じエラーで検索しましたが自力では解決できず、助言いただければ幸いです。
CC BY-SA 4.0
2020-10-19T01:43:45.467
71310
2020-10-19T03:11:14.803
42090
question
swift ios xcode
画面遷移時タップでエラー Thread 1: signal SIGABRT
`ProfileInfoHeaderCollectionReusableView`の`identifier`と`ProfileTabsCollectionReusableView`の`identifier`が同じ値になってしまっています。

```

    class ProfileInfoHeaderCollectionReusableView: UICollectionReusableView {
          static let identifier = "ProfileInfoHeaderCollectionReusableView"
    
        //...
    }
    
```

```

    class ProfileTabsCollectionReusableView: UICollectionReusableView {
        static let identifier = "ProfileInfoHeaderCollectionReusableView" //<-
        
        //...
    }
    
```

このためiOSが`ProfileInfoHeaderCollectionReusableView`を生成できません。  
(後から設定した

```

    collectionView?.register(ProfileTabsCollectionReusableView.self,
                             forSupplementaryViewOfKind: UICollectionView.elementKindSectionHeader,
                             withReuseIdentifier: ProfileTabsCollectionReusableView.identifier)
    
```

が`ProfileInfoHeaderCollectionReusableView`に関する設定を上書きしてしまっている。)  
正しいreuseIdentifierを設定してみてください。

```

    class ProfileTabsCollectionReusableView: UICollectionReusableView {
        static let identifier = "ProfileTabsCollectionReusableView" //<-
        
        //...
    }
    
```
CC BY-SA 4.0
2020-10-19T02:35:26.087
71314
2020-10-19T03:11:14.803
2020-10-19T03:11:14.803
13972
13972
71310
answer