私はSwift2でCoreDataを使用している場合、私はスレッド1を得た：エラーが発生した理由をCoreData</p> <p>を使用すると、いずれかが私に言うことができるときAppDelegateのEXC_BAD_ACCESSは

Question

ファイル私はただのiOSを学ぶ学生です、私は悪い感じていますか？

error picture

import UIKit 
import CoreData 

class AToZViewController: UIViewController, UITableViewDataSource, UITableViewDelegate { 

    var baseURL = "monashcaulfield.maps.arcgis.com/apps/webappviewer/index.html?id=" 

    var managedObjectContext: NSManagedObjectContext 


    var wildlifeList: NSArray 


    required init?(coder aDecoder: NSCoder){ 



    let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate 
    self.managedObjectContext = appDelegate.managedObjectContext 

    self.wildlifeList = NSArray() 

    super.init(coder: aDecoder) 
    } 

    @IBOutlet weak var tableView: UITableView! 



    // data for A to Z dictionary 

    var name = ["Blue-billed Duck", 
       "Brush-tailed Rock-wallaby", 
       "Grey-headed Flying-fox", 
       "King Quail", 
       "Mallee Worm-Lizard", 
       "Mountain Pygmy-possum", 
       "Pink-tailed Worm-Lizard", 
       "Red-chested Button-quail", 
       "South-eastern Long-eared Bat" 
       ] 

    var nameTwo = ["Oxyura australis", 
        "Petrogale penicillata", 
        "Pteropus poliocephalus", 
        "Coturnix chinensis victoriae", 
        "Aprasia aurita", 
        "Burramys parvus", 
        "Aprasia parapulchella", 
        "Turnix pyrrhothorax", 
        "Nyctophilus corbeni" 
        ] 

    var pic = [UIImage(named: "004"), 
       UIImage(named: "006"), 
       UIImage(named: "007"), 
       UIImage(named: "002"), 
       UIImage(named: "008"), 
       UIImage(named: "005"), 
       UIImage(named: "009"), 
       UIImage(named: "003"), 
       UIImage(named: "001")] 

    var dist = ["acd6ceac78df451aa046bdea250fb4d4", 
       "fef94a3835f844939294bb0a32c473f0", 
       "e4e9a00590b2498d866910de81b2f44a", 
       "72e59910fc8448c5a1d2a83195361382", 
       "87faf8f5e5f84646aa2cd535135863e3", 
       "bbc166cc95a244e7bde4da6b0051405e", 
       "d43b723f23244ae0882bd618818366fbv", 
       "a8b77ed3aa084f6b97485bda3acf8c48", 
       "ab6d7601ec2b48d2ad2ba6add73f3591" 
       ] 





    override func viewDidLoad() { 
     super.viewDidLoad() 

     let fetchRequest = NSFetchRequest() 

     let entityDescription = NSEntityDescription.entityForName("List", inManagedObjectContext: self.managedObjectContext) 

     fetchRequest.entity = entityDescription 



     do{ 
      self.wildlifeList = try self.managedObjectContext.executeFetchRequest(fetchRequest) 

      if self.wildlifeList.count == 0 

      { 
       addWildlifeData() 
      } 

     } 
     catch{ 
      let fetchError = error as NSError 
      print(fetchError) 
     } 

     // Do any additional setup after loading the view. 
    } 


    func addWildlifeData(){ 

    var data = NSEntityDescription.insertNewObjectForEntityForName("List", inManagedObjectContext: self.managedObjectContext)as? List 

    data!.id = "a10012" 
    data!.name = "King Quail" 
    data!.nameTwo = "Coturnix chinensis victoriae" 
    data!.dist = "72e59910fc8448c5a1d2a83195361382" 
    data!.cata = "ot" 
    data!.pic = "002" 


    data = NSEntityDescription.insertNewObjectForEntityForName("List", inManagedObjectContext: self.managedObjectContext)as? List 

    data!.id = "a10019" 
    data!.name = "Red-chested Button-quail" 
    data!.nameTwo = "Turnix pyrrhothorax" 
    data!.dist = "a8b77ed3aa084f6b97485bda3acf8c48" 
    data!.cata = "ot" 
    data!.pic = "003" 


    saveRecords() 




    } 



    func saveRecords(){ 


    do{ 
     try self.managedObjectContext.save() 
     let fetchRequest = NSFetchRequest() 
     let entityDescription = NSEntityDescription.entityForName("List", inManagedObjectContext: self.managedObjectContext) 
     fetchRequest.entity = entityDescription 

     do{ 
      self.wildlifeList = try self.managedObjectContext.executeFetchRequest(fetchRequest) as! [List] 
     } 
     catch{ 
      let fetchError = error as NSError 
      print (fetchError) 
     } 
    } 
    catch let error{ 
     print("Could not save Deletion \(error)") 
    } 

    } 

    override func didReceiveMemoryWarning() { 
     super.didReceiveMemoryWarning() 
     // Dispose of any resources that can be recreated. 
    } 


    func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int{ 
     //return name.count 

     return self.wildlifeList.count 
    } 


    func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell { 

     let cell = self.tableView.dequeueReusableCellWithIdentifier("AToZCell", forIndexPath: indexPath) as! AToZTableViewCell 



     let l: List = self.wildlifeList[indexPath.row] as! List 

     cell.label.text = l.name 
     cell.labelTwo.text = l.nameTwo 

     let picNumber = l.pic 

     cell.imagePic.image = UIImage(named: picNumber!) 


     return cell 
    } 





    override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) { 




     if(segue.identifier == "AToZSegue") { 

      let indexPathTwo = self.tableView.indexPathForSelectedRow! 

      let l: List = self.wildlifeList[indexPathTwo.row] as! List 

      let distAddress = l.dist 

      let combineURL = self.baseURL + distAddress! 

      print(combineURL) 

      if let destinationVC = segue.destinationViewController as? ShowDetailSegueViewController{ 
       destinationVC.currentURL = combineURL 



      } 
     } 




    } 





    /* 
    // MARK: - Navigation 

    // In a storyboard-based application, you will often want to do a little preparation before navigation 
    override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) { 
    // Get the new view controller using segue.destinationViewController. 
    // Pass the selected object to the new view controller. 
    } 
    */ 




    ///let alertController = UIAlertController() 



} 

Answer 1

あなたはそれがAppDelegateがまだ初期化されていない可能性があるため、エラーが発生することがありましたinit方法で管理オブジェクトコンテキストを割り当てる必要はありませんNSFetchedResultsControllerを使用していないので。

は initメソッドを削除し、 viewDidLoad()

override func viewDidLoad() { 
    super.viewDidLoad() 
    let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate 
    self.managedObjectContext = appDelegate.managedObjectContext 
} 

でコードを入れて、スウィフトアレイではなく

var wildlifeList = [List]()