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当我将对象传递给 segue 时,出现此错误:
Could not cast value of type 'NeuroCongress.celulaTableViewCell' (0x15836c) to 'NeuroCongress.Evento'
//---------------- newTableViewController --------------------
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath) as! celulaTableViewCell
cell.titLabel?.text = evento[indexPath.row].titulo
cell.subTitLabel?.text = evento[indexPath.row].localizacao
return cell
}
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
// cria evento com o selecionado atual
let evento = self.evento[indexPath.row]
// envia evento criado acima como sender para o segue detailSegue
self.performSegueWithIdentifier("detailSegue", sender: evento)
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
let detailVC = segue.destinationViewController as! DetailViewController
// envia objeto que veio via sender do didselectrow como objeto Friend para a VC FriendDetail
detailVC.eventozinho = sender as! Evento
}
//----------------- DetailViewController --------------------
import UIKit
class DetailViewController: UIViewController {
@IBOutlet weak var lblTitulo: UILabel!
@IBOutlet weak var lblInicio: UILabel!
@IBOutlet weak var lblFim: UILabel!
@IBOutlet weak var lblLocal: UILabel!
@IBOutlet weak var lblPais: UILabel!
@IBOutlet weak var lblContato: UILabel!
@IBOutlet weak var lblAssunto: UILabel!
@IBOutlet weak var lblWeb: UILabel!
@IBAction func btnAbrir(sender: AnyObject) {
openWebPage(self.eventozinho.website)
}
var eventozinho = Evento()
override func viewDidLoad() {
super.viewDidLoad()
self.lblTitulo.text = self.eventozinho.titulo
self.lblInicio.text = String(self.eventozinho.dtinicio!)
self.lblFim.text = String(self.eventozinho.dttermino!)
self.lblLocal.text = self.eventozinho.localizacao
self.lblPais.text = self.eventozinho.pais
self.lblWeb.text = self.eventozinho.website
self.lblAssunto.text = self.eventozinho.assunto
self.lblContato.text = self.eventozinho.contato
最佳答案
我怀疑您通过从 TableView 单元格原型(prototype)拖动到 DetailViewController 来在 Storyboard中创建了 segue。因此,当您点击单元格时会自动触发 segue - 在本例中,sender
参数是被点击的单元格。因此出现错误:您的 prepareForSegue 假定发送者参数是 Event
,但它实际上是单元格。如果您以这种方式设置 segue,则无需使用 didSelectRowAtIndexPath
来触发 segue。事实上,prepareForSegue 在 didSelectRowAtIndexPath
方法被调用之前运行。您可以修改 prepareForSegue
以使用 indexPathForCell
(传递 sender
- 您可能需要正确转换它)来确定正确的 indexPath(因此将哪个事件传递给目标 View Controller )。
或者,在您的 Storyboard中删除 segue 并通过从 View Controller 本身(使用场景顶部的图标)拖动到 DetailViewController 来重新创建它。在这种情况下,您当前的代码应该可以工作 - didSelectRowAtIndexPath
代码将运行并触发 segue,将事件作为发送者传递。
关于ios - 无法将类型 'NeuroCongress.celulaTableViewCell' (0x15836c) 的值转换为“NeuroCongress.Evento”,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/39102273/
当我将对象传递给 segue 时,出现此错误: Could not cast value of type 'NeuroCongress.celulaTableViewCell' (0x15836c)
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