ios - 在情节提要中注册笔尖

Question

我对编程和 swift 不熟悉，并且适合初学者使用 iOS 13。我已按照所有步骤操作，但不知道如何解决这个问题。该应用程序无法在模拟器中完成启动并卡在启动屏幕上。“无法使一种视图出队：带有标识符标头的 UICollectionElementKindSectionHeader - 必须为标识符注册一个 nib 或一个类，或者在情节提要中连接一个原型单元”错误是在应用程序委托中，我无法弄清楚我将在哪里注册一个笔尖。错误在类声明行。

import UIKit

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {



    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        // Override point for customization after application launch.
        return true
    }

    // MARK: UISceneSession Lifecycle

    func application(_ application: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, options: UIScene.ConnectionOptions) -> UISceneConfiguration {
        // Called when a new scene session is being created.
        // Use this method to select a configuration to create the new scene with.
        return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role)
    }

    func application(_ application: UIApplication, didDiscardSceneSessions sceneSessions: Set<UISceneSession>) {
        // Called when the user discards a scene session.
        // If any sessions were discarded while the application was not running, this will be called shortly after application:didFinishLaunchingWithOptions.
        // Use this method to release any resources that were specific to the discarded scenes, as they will not return.
    }

}

我觉得错误是此代码中连接到委托的内容。

import UIKit

class ExploreViewController: UIViewController, UICollectionViewDataSource, UICollectionViewDelegate {
    
    func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView {
        let headerView = collectionView.dequeueReusableSupplementaryView(ofKind: kind, withReuseIdentifier: "header", for: indexPath)
        return headerView
    }
    
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        20
    }
    
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "exploreCell", for: indexPath)
        return cell
    }
    

    @IBOutlet weak var collectionView: UICollectionView!
    
    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
    }
    
    @IBAction func unwindLocationCancel(segue:UIStoryboardSegue){
        
    }

}

标签： iosswiftuicollectionviewstoryboarduicollectionviewcell