選択したテーブルセルのコアデータを新しいビューコントローラに渡す

Question

選択したテーブルセルのデータ（タイトル、成分、ステップ、イメージ）を新しいビューコントローラに渡そうとしています。しかし、私はそれをどうやって行うのか分かりません。私は多くのエラーを持っていたので、今私は再び始めている。誰でも助けてくれますか？私はコーディングに新しいです。私のコード:-)ありがとう：

VIEWCONTROLLER.SWIFT

class ViewController: UIViewController, UITableViewDataSource, UITableViewDelegate { 

    @IBOutlet weak var tableView: UITableView! 
    var recipes = [Recipe]() 

    override func viewDidLoad() { 
     super.viewDidLoad() 
     tableView.delegate = self 
     tableView.dataSource = self 
    } 

    override func viewDidAppear(animated: Bool) { 
     fetchAndSetResults() 
     tableView.reloadData() 
    } 

    func fetchAndSetResults(){ 
     let app = UIApplication.sharedApplication().delegate as! AppDelegate 
     let context = app.managedObjectContext 
     let fetchRequest = NSFetchRequest(entityName: "Recipe") 

     do { 
      let results = try context.executeFetchRequest(fetchRequest) 
      self.recipes = results as! [Recipe] 
     } catch let err as NSError { 
      print(err.debugDescription) 
     } 
    } 

    func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell { 
     if let cell = tableView.dequeueReusableCellWithIdentifier("RecipeCell") as? RecipeCell { 
      let recipe = recipes[indexPath.row] 
      cell.configureCell(recipe) 
      return cell 
     } else { 
      return RecipeCell() 
     } 
    } 

    func numberOfSectionsInTableView(tableView: UITableView) -> Int { 
     return 1 
    } 

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

    func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) { 
     self.tableView.deselectRowAtIndexPath(indexPath, animated: true) 
    } 

    override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) { 
     if (segue.identifier == "RecipeDetail") { 
      //I WANT TO PASS THE DATA FROM THE TABLE CELL TO THE NEW VIEW CONTROLLER (RECIPEDETAILVC) 
     } 
    } 

    func tableView(tableView: UITableView, canEditRowAtIndexPath indexPath: NSIndexPath) -> Bool { 
     return true 
    } 

    func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) { 
     if (editingStyle == UITableViewCellEditingStyle.Delete) { 

      let app = UIApplication.sharedApplication().delegate as! AppDelegate 
      let context = app.managedObjectContext 

      context.deleteObject(recipes[indexPath.row]) 
      app.saveContext() 

      recipes.removeAtIndex(indexPath.row) 
      tableView.reloadData() 
     } 
    } 
} 

CREATERECIPE.SWIFT

class CreateRecipeVC: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate { 

    @IBOutlet weak var recipeTitle: UITextField! 
    @IBOutlet weak var recipeIngredients: UITextField! 
    @IBOutlet weak var recipeSteps: UITextField! 
    @IBOutlet weak var recipeImage: UIImageView! 
    @IBOutlet weak var addRecipeBtn: UIButton! 

    var imagePicker: UIImagePickerController! 

    override func viewDidLoad() { 
     super.viewDidLoad() 
     imagePicker = UIImagePickerController() 
     imagePicker.delegate = self 
     recipeImage.layer.cornerRadius = 5.0 
     recipeImage.clipsToBounds = true 

    } 

    func imagePickerController(picker: UIImagePickerController, didFinishPickingImage image: UIImage, editingInfo: [String : AnyObject]?) { 

     imagePicker.dismissViewControllerAnimated(true, completion: nil) 
     recipeImage.image = image 

    } 

    @IBAction func addImage(sender: AnyObject!) { 
     presentViewController(imagePicker, animated: true, completion: nil) 
    } 

    @IBAction func createRecipe(sender: AnyObject!) { 
     if let title = recipeTitle.text where title != "" { 
      let app = UIApplication.sharedApplication().delegate as! AppDelegate 
      let context = app.managedObjectContext 
      let entity = NSEntityDescription.entityForName("Recipe", inManagedObjectContext: context)! 
      let recipe = Recipe(entity: entity, insertIntoManagedObjectContext: context) 
      recipe.title = title 
      recipe.ingredients = recipeIngredients.text 
      recipe.steps = recipeSteps.text 
      recipe.setRecipeImage(recipeImage.image!) 

      context.insertObject(recipe) 

      do { 
       try context.save() 
      } catch { 
       print("Could not save recipe") 
      } 

      self.navigationController?.popViewControllerAnimated(true) 
     } 
    } 

} 

RECIPEDETAILVC.SWIFT

import UIKit 
import CoreData 

class RecipeDetailVC: UIViewController { 

    @IBOutlet weak var recipeImage: UIImageView! 
    @IBOutlet weak var recipeTitle: UILabel! 
    @IBOutlet weak var recipeIngredients: UILabel! 
    @IBOutlet weak var recipeSteps: UILabel! 

    override func viewDidLoad() { 
     super.viewDidLoad() 

     //I WANT TO DISPLAY THE CORE DATA INFORMATION FROM THE TABLE CELL I SELECTED. 
    } 
} 

RECIPECELL.SWIFT

class RecipeCell: UITableViewCell { 

    @IBOutlet weak var recipeTitle: UILabel! 
    @IBOutlet weak var recipeImage: UIImageView! 

    func configureCell(recipe: Recipe) { 
     recipeTitle.text = recipe.title 
     recipeImage.image = recipe.getRecipeImage() 
    } 

} 

Answer 1

あなたは、人がクリックされたアイテムを追跡する必要があります。

var mySelection: Int? 
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) { 
    self.tableView.deselectRowAtIndexPath(indexPath, animated: true) 
    mySelection = indexPath.row 
} 

次に、セグを実行するときに使用します。

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?)  { 
    if (segue.identifier == "RecipeDetail") { 
     //I WANT TO PASS THE DATA FROM THE TABLE CELL TO THE NEW VIEW CONTROLLER (RECIPEDETAILVC) 
     let recipeDetailControler = segue.destinationViewController as! RecipeDetailViewController 

     if let mySelection = mySelection { 
      let recipe = recipes[mySelection] 
      // add this function to your 
      recipeDetailControler.configureRecipeData(recipe) 
     } 
    } 
} 

RecipeDetailViewControllerにこの機能を追加します。

func configureRecipeData(recipe: Recipe) { 

    // IMPLEMENT ME 

}