Question

我刚刚开始使用Swift，而且我在使用自定义UITableViewCell时遇到了一些奇怪的问题。问题是我需要在每个表格单元格中有一个白色背景，如here所示。

我创建了一个自定义的UITableViewCell类，并为图像，标签和按钮创建了IBOutlets，如下所示：

import UIKit

class LocationTableViewCell: UITableViewCell {

@IBOutlet var locationImageView: UIImageView!
@IBOutlet var locationButton: UIButton!
@IBOutlet var locationLabel: UILabel!


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
}

我的视图控制器代码是：

import UIKit

class ViewController: UIViewController, UITableViewDataSource {

@IBOutlet var locationTableView: UITableView!

var skiLocation = Location(name: "Banff", picture: UIImage(named: "ski.jpeg")!)
var tundraLocation = Location(name: "Yellowknife", picture: UIImage(named: "tundra.jpeg")!)
var beachLocation = Location(name: "Cancun", picture: UIImage(named: "beach.jpeg")!)
var locations: [Location] = []



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

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell: LocationTableViewCell = tableView.dequeueReusableCellWithIdentifier("location", forIndexPath: indexPath) as! LocationTableViewCell

    cell.locationLabel.text = self.locations[indexPath.row].name
    cell.locationImageView.image = self.locations[indexPath.row].picture

    return cell
}

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
    self.locations = [skiLocation, tundraLocation, beachLocation]
    self.locationTableView.dataSource = self
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}


}

我已经通过在每个表视图中创建一个UIView然后将按钮，标签和图像放在UIView中来解决这个问题。这只是为了获得白色背景。但是，当我运行我的代码时，所有内容都按预期显示，除了没有UILabel，UIButton按照故事板进行风格化。当我尝试通过故事板更改标签的背景或按钮时，没有任何变化。没有标签，只有通用按钮。奇怪的是我可以通过ViewController类将图像设置为UIImageView。

有什么想法吗？

编辑：Here是故事板视图的链接。我在故事板视图中使用了标识符字段来链接单元格。

Answer 1

您有UITableViewDataSource但UITableViewDelegate缺失。

import UIKit

class ViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {

@IBOutlet var locationTableView: UITableView!

var skiLocation = Location(name: "Banff", picture: UIImage(named: "ski.jpeg")!)
var tundraLocation = Location(name: "Yellowknife", picture: UIImage(named: "tundra.jpeg")!)
var beachLocation = Location(name: "Cancun", picture: UIImage(named: "beach.jpeg")!)
var locations: [Location] = []



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

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell: LocationTableViewCell = tableView.dequeueReusableCellWithIdentifier("location", forIndexPath: indexPath) as! LocationTableViewCell

    cell.locationLabel.text = self.locations[indexPath.row].name
    cell.locationImageView.image = self.locations[indexPath.row].picture

    return cell
}

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
    self.locations = [skiLocation, tundraLocation, beachLocation]
    self.locationTableView.dataSource = self
    self.locationTableView.delegate = self

}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}


}

Swift - UIView里面的自定义UITableViewCell不会更新按钮/标签

1 个答案: