ios - Swift cellForRowAt 不显示

Question

我在使 cellForRowAt 工作时遇到问题，但不幸的是我的应用程序在编译后仍然是空白的。我正在使用 Xcode 8.3 beta 3。

import UIKit

class myCell: UITableViewCell {

  @IBOutlet var myLabel: UILabel!
  @IBOutlet var myImageView: UIImageView!
  override func awakeFromNib() {
    super.awakeFromNib()
    // Initialization code
}

override func setSelected(_ selected: Bool, animated: Bool) {
    super.setSelected(selected, animated: animated)

    // Configure the view for the selected state
  }
}

我创建了一个 Food 类来简化工作:

import Foundation

class Food {
var imageName = ""
var description = ""
var moreInfo = ""

init(imageName: String, description: String, moreInfo: String) {
    self.imageName = imageName
    self.description = description
    self.moreInfo = moreInfo
  }
}

最后，这是 TableViewController:

import UIKit

class TableViewController: UITableViewController {

    var foodArray: [Food] = [Food]()

    override func viewDidLoad() {
        super.viewDidLoad()

        let food1 = Food(imageName: "cake.jpg", description: "Chocolate Cake", moreInfo: "There is nothing better than a great chocolate cake.")
        let food2 = Food(imageName: "meringue.jpg", description: "Meringue & Berries", moreInfo: "I really don't like meringue but it's a nice photo.")
        let food3 = Food(imageName: "peaches.jpg", description: "Grilled Peaches", moreInfo: "This would be perfect as a summer time dessert.")
        let food4 = Food(imageName: "tiramisu.jpg", description: "Tiramisu", moreInfo: "One of my favorite Italian desserts. Yum.")

        foodArray.append(food1)
        foodArray.append(food2)
        foodArray.append(food3)
        foodArray.append(food4)

    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }



    override func numberOfSections(in tableView: UITableView) -> Int {
        return 1
    }

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


    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath) as! myCell
        let foodItem = foodArray[indexPath.row]
        cell.myImageView.image = UIImage(named: foodItem.imageName)
        cell.myLabel.text = foodItem.description
        self.tableView.reloadData()
        return cell
    }
}

谁能告诉我我做错了什么？

Answer 1

您需要使用以下方法注册类并添加重用标识符:

tableView.registerClass(UITableViewCell.self, forCellReuseIdentifier: "Cell")

在viewDidLoad中添加该方法

此外，您不需要在 cellForRowAtIndexPath 方法中调用 self.tableView.reloadData()。

希望对你有帮助