Exc_Bad_Instruction当使用navigationController PushViewController

我想推到不同的视图，当用户选择一个表格单元格，当我到达它将推动的位置时，它会引发错误。Exc_Bad_Instruction当使用navigationController PushViewController

这里的特殊情况是我在同一个UIViewController下工作了两个带有tableViews的UIViews。结果，UIView和TableDelegates在他们自己的类中。

任何建议，非常感谢。

import Foundation 
import UIKit 
import CoreData 

class FavoritesViewController: UIViewController { 

//MARK: - UIViewController Delegates 
override func viewWillAppear(animated: Bool) {} 
} 


//MARK: - Lenders Table View Delegates 
class FavoritesLenderViewController: UIView, UITableViewDelegate, UITableViewDataSource { 

let favoritesViewController = FavoritesViewController() 
let lenderDetailsViewController = LenderDetailsViewController() 

var lenders = Array<Lenders>() 
var lenderUserComments = Array<LenderUserComments>() 
let lendersModel = LendersModel() 

//MARK: View Parameters 
@IBOutlet weak var favoriteLendersTableView: UITableView! 

// Equivalent to viewWillAppear for a subclass. 
override func willMoveToSuperview(newSuperview: UIView?) { 
    self.lenders = lendersModel.readLenderData() as Array 

    // Reload data (for when the user comes back to this page from the details page.) 
    dispatch_async(dispatch_get_main_queue(), {() -> Void in 
     self.favoriteLendersTableView.reloadData() 
    }) 
} 


func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int { 
    var favoritesViewController = FavoritesViewController() 
    return self.lenders.count 
} 



// On selecting, send variables to target class. 
func tableView(tableView: UITableView!, didSelectRowAtIndexPath path: NSIndexPath!) { 

    // Setup what segue path is going to be used on selecting the row as set the type as the class for the view your going to. 
    let lenderDetailsViewController = self.favoritesViewController.storyboard?.instantiateViewControllerWithIdentifier("LendersDetailsView") as LenderDetailsViewController 

    // Get the lenderId from the selected path.row and put the values to the variables in the target class. 
    let lendersNSArray = lenders as NSArray 
    lenderDetailsViewController.lenderIdPassed = lendersNSArray[path.row].valueForKey("lenderId") as String! 

    // tell the new controller to present itself 
// BREAKS HERE : EXC_BAD_INSTRUCTION code=EXC_I386_INVOP 
    lenderDetailsViewController.navigationController?.pushViewController(lenderDetailsViewController, animated: true) 

} 

....//additional table delegates 
}

来源

2015-01-02 Christopher Wade Cantley

您不会自己推新视图控制器。试试这个：

self.navigationController?.pushViewController(lenderDetailsViewController, animated: true)

来源

2015-01-02 19:20:28 SaylorTwift2

感谢您的快速回复苏拉杰，因为“FavoritesLenderViewController”没有一个名为“navigationController”成员，我不能使用自我。该成员似乎存在于UIViewController中，它是一个单独的类，我将其设置为在类“FavoritesLenderViewController”的顶部使用。在下面调用它会引发同样的错误。 self.favoritesViewController.navigationController？.pushViewController（lenderDetailsViewController，animated：true） –

单击界面构建器中的第一个视图控制器，并执行编辑器>嵌入>导航控制器。现在你有了nacigationController属性 –

Exc_Bad_Instruction当使用navigationController PushViewController

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