ios - 无法将类型 'CustomProfileCell' 的返回表达式转换为返回类型 'UITableViewCell'

Question

这是我的代码

//
//  FirstViewController.swift
//  tabbed
//
//  Created by on 7/18/18.
//  Copyright © 2018 LR Web Design. All rights reserved.
//

import UIKit

class FirstViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {

    @IBOutlet weak var profileTableView: UITableView!

    var profileArray = [Profile]()

    override func viewDidLoad() {
        super.viewDidLoad()

        profileTableView.delegate = self

        profileTableView.dataSource = self

        profileTableView.register(UINib(nibName: "ProfileCell",bundle: nil) , forCellReuseIdentifier: "customProfileCell")

        retrieveProfiles()

    }

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

        let cell = tableView.dequeueReusableCell(withIdentifier: "customProfileCell", for: indexPath) as! CustomProfileCell 
        cell.profileImage.image = UIImage(named: profileArray[indexPath.row].profileImage)
        cell.profileName.text = profileArray[indexPath.row].name
        cell.deviceCount.text = profileArray[indexPath.row].deviceCount 
        return cell
    }

    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return profileArray.count
    } 
    func retrieveProfiles() {

        let p1 = Profile()
        p1.name = "John"
        p1.deviceCount = "10"
        p1.profileImage = "john"
        profileArray.append(p1)

        let p2 = Profile()
        p2.name = "Jane"
        p2.deviceCount = "5"
        p2.profileImage = "jane"
        profileArray.append(p2)

        let p3 = Profile()
        p3.name = "Andrew"
        p3.deviceCount = "4"
        p3.profileImage = "andrew"
        profileArray.append(p3)

        self.profileTableView.reloadData()

    }

}

我不断得到

Cannot convert return expression of type 'CustomProfileCell' to return type 'UITableViewCell'

Answer 1

由于您应该返回类型为 UITableViewCell 的自定义类，因此只有在以下情况下才会编译返回

class CustomProfileCell : UITableViewCell {
   // here outlets hooked to xib
}