无法将类型"UITableViewCell"的值强制转换为"AppName.CustomCellName" [英] Could not cast value of type 'UITableViewCell' to 'AppName.CustomCellName'

问题描述

我正在尝试创建一个自定义单元格，该单元格可以在点击时扩展.我正在使用这个github示例: https://github.com/rcdilorenzo/Cell-Expander

I am trying to create a custom cell that expands on tap. I am using this github example: https://github.com/rcdilorenzo/Cell-Expander

此行给出运行时错误SIGABRT:

This line gives runtime error SIGABRT:

override func tableView(tableView: UITableView, willDisplayCell cell: UITableViewCell, forRowAtIndexPath indexPath: NSIndexPath) {
    (cell as! EventTableViewCell).watchFrameChanges()
    //Could not cast value of type 'UITableViewCell' (0x105aa1b80) to 'AppName.EventTableViewCell' (0x104287fe0).
}

我也检查了这篇文章的答案，遵循了三个步骤，但是没有运气: 无法将'UITableViewCell'类型的值强制转换为'( AppName).(CustomCellName)'

I also checked answer from this post, followed three steps, but no luck: Could not cast value of type 'UITableViewCell' to '(AppName).(CustomCellName)'

我的自定义单元格类如下:

My custom cell class looks like this:

import UIKit

class EventTableViewCell : UITableViewCell {
...
}

cellForRowAtIndexPath:

cellForRowAtIndexPath:

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier( "eventCell", forIndexPath: indexPath)

    let date = self.eventArray[indexPath.row].startTime
    let calendar = NSCalendar.currentCalendar()
    let minutes = calendar.component(NSCalendarUnit.Minute, fromDate: date)
    var minutesString: String
    if (minutes == 0) {
        minutesString = "00"
    } else {
        minutesString = String(calendar.component(NSCalendarUnit.Minute, fromDate: date))
    }
    let hours = calendar.component(NSCalendarUnit.Hour, fromDate: date)
    cell.textLabel?.text = self.eventArray[indexPath.row].title + " - \(hours):\(minutesString)"

    return cell
    }
}

请帮助.

推荐答案

我的viewDidLoad中有self.tableView.registerClass(UITableViewCell.self，forCellReuseIdentifier:" eventCell)"

"I have self.tableView.registerClass(UITableViewCell.self, forCellReuseIdentifier: "eventCell") in my viewDidLoad"

这可能会覆盖您在情节提要中设置的值.尝试删除此行，或将其更改为self.tableView.registerClass(EventTableViewCell.self, forCellReuseIdentifier: "eventCell").

That's probably overriding the value you set in the storyboard. Try removing this line, or change it to self.tableView.registerClass(EventTableViewCell.self, forCellReuseIdentifier: "eventCell").

这篇关于无法将类型"UITableViewCell"的值强制转换为"AppName.CustomCellName"的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！