接收器沒有標識符swift 2

Question

我試圖通過segue將值從領域傳遞給另一個viewcontroller。問題在於它發生錯誤：Reciever沒有標識符。我嘗試了另一種方式，準備好了，但它的效果不如這個。

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) { 
    let lektire = datasource[indexPath.row] 
    let destinationVC = DetaljiViewController() 
    destinationVC.programVar = lektire.ime 
    destinationVC.performSegueWithIdentifier("oLektiri", sender: self) 
} 

但是，我的segue肯定存在，其標識符已正確設置（請參閱下面的屏幕截圖）。

這是怎麼回事，我怎麼能解決這個問題？

Answer 1

我相信這是你正在尋找的，你必須從你目前所在的視圖控制器中調用performSegueWithIdentifier，或者讓發送者成爲indexPath，或者你可以將它變成你的數據源項目。

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) { 
    self.performSegueWithIdentifier("oLektiri", sender: indexPath) 

    // Another WAY 
    self.performSegueWithIdentifier("oLektiri", sender: datasource[indexPath.row]) 
} 

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) { 
    if(segue.identifier == "oLektiri") { 
     let indexPath = sender as! NSIndexPath 
     let toViewController = segue.destinationViewController as? NextViewController 
     let lektire = datasource[indexPath.row] 
     toViewController?.selectedObject = lektire 
    } 

    // Another WAY 
    if(segue.identifier == "oLektiri") { 
     let lektire = sender as? lektireTYPE 
     let toViewController = segue.destinationViewController as? NextViewController 
     toViewController?.selectedObject = lektire 
    } 
} 

// An example of what the next view controller should look like 
class NextViewController: UIViewController { 
    var selectedObject: ObjectType? 
}