为performSegueWithIdentifier（）设置故事板

Question

我正在我的应用页面上工作，用户从UITableView中选择3个单元格中的一个，并被带到2个UIViewControllers中的相应1个，该页面填充了包含所选单元格详细信息的页面。我正在尝试准备我的故事板来执行此操作，并执行“与SeseWithIdentifier（）相关联”。我通过使用＆＃39; show＆＃39;连接父视图的视图控制器和每个子视图的视图来创建一个segue。方法。然后我将其添加到我的父视图控制器：

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
    let appDelegate = (UIApplication.sharedApplication().delegate as AppDelegate)
    if indexPath.row == 0 {
        appDelegate.selected = 1
        self.performSegueWithIdentifier("GraphID", sender: self)
    }
    if indexPath.row == 1 {
        appDelegate.selected = 2
        self.performSegueWithIdentifier("DistanceID", sender: self)
    }
    if indexPath.row == 2 {
        appDelegate.selected = 3
        self.performSegueWithIdentifier("GraphID", sender: self)
    }    
}

当我启动我的应用程序并按任何单元格时，它会因NSException而崩溃：

*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Receiver     (<FlightTracker.StatusViewController: 0x7fe4faa5c8c0>) has no segue with identifier 'DistanceID''
*** First throw call stack:
(
    0   CoreFoundation                      0x0000000109446f35 __exceptionPreprocess + 165
    1   libobjc.A.dylib                     0x00000001090dfbb7 objc_exception_throw + 45
    2   UIKit                               0x0000000109b9dd3b -[UIViewController     shouldPerformSegueWithIdentifier:sender:] + 0
    3   UIKit                               0x00000001174dec78 -[UIViewControllerAccessibility     performSegueWithIdentifier:sender:] + 39
    4   FlightTracker                       0x0000000106f977e2  _TFC13FlightTracker20StatusViewController9tableViewfS0_FTCSo11UITableView23didSelectRowAtIndexPathCS o11NSIndexPath_T_ + 2530
    5   FlightTracker                       0x0000000106f97cef _TToFC13FlightTracker20StatusViewController9tableViewfS0_FTCSo11UITableView23didSelectRowAtIndexPathCSo11NSIndexPath_T_ + 79
    6   UIKit                               0x0000000109b5e393 -[UITableView _selectRowAtIndexPath:animated:scrollPosition:notifyDelegate:] + 1293
    7   UIKit                               0x0000000109b5e4d4 -[UITableView _userSelectRowAtPendingSelectionIndexPath:] + 219
    8   UIKit                               0x0000000109a99331 _applyBlockToCFArrayCopiedToStack + 314
    9   UIKit                               0x0000000109a991ab _afterCACommitHandler + 516
    10  CoreFoundation                      0x000000010937bdc7 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 23
    11  CoreFoundation                      0x000000010937bd20 __CFRunLoopDoObservers + 368
    12  CoreFoundation                      0x0000000109371b53 __CFRunLoopRun + 1123
    13  CoreFoundation                      0x0000000109371486 CFRunLoopRunSpecific + 470
    14  GraphicsServices                    0x000000010b1ba9f0 GSEventRunModal + 161
    15  UIKit                               0x0000000109a76420 UIApplicationMain + 1282
    16  FlightTracker                       0x0000000106fac07e top_level_code + 78
    17  FlightTracker                       0x0000000106fac0ba main + 42
    18  libdyld.dylib                       0x000000010bdc5145 start + 1
    19  ???                                 0x0000000000000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException

我是否正确连接了故事板以使用此方法？

Answer 1

在您发布的照片​​中，您正在设置StoryboardID调用DistanceID。这与我们正在讨论的segue identifier完全不同。

因此，请在viewControllers之间选择segue，并将标识符更改为DistanceID。这是正确的标识符。