最初はフランスから来たので、私の英語はすみません。コアデータで値を更新できません
第2に、私は開発が新しく、データを追加してコアデータを表示した後にコードを開発しました。それはworks.ok
しかし私は更新が欲しいのですが、私はなぜ私は私の価値を更新できないのか分からない問題があります。 「致命的なエラー:オプションの値をアンラッピングしている間に予期せぬエラーが発生しました」
私は1週間から多くの解決策を試しましたが、問題は見つかりませんでした。誰かが私を助けてくれてありがとう!少しでも助け:)これは私のコード(SWIFT 2.3)である
:
import CoreData
import UIKit
class DetailViewController: UIViewController {
@IBOutlet var Label: UILabel!
@IBOutlet var Detail: UITextView!
@IBOutlet weak var Date: UILabel!
@IBOutlet weak var Id: UILabel!
var dataNom = ""
var dataDetail = ""
var dataDate = ""
var dataId = ""
override func viewDidLoad() {
super.viewDidLoad()
Label.text = dataNom
Detail.text = dataDetail
Date.text = dataDate
Id.text = dataId
// Do any additional setup after loading the view
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject!) {
if segue.identifier == "ModifierDetail" {
if let destination = segue.destinationViewController as? ModifierViewController {
destination.modifierNom = dataNom
destination.modifierId = dataId
destination.modifierDetail = dataDetail
destination.modifierDate = dataDate
}
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
/*
// 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.
}
*/
}
:セルのショーの詳細は
import UIKit
import CoreData
class ProduitTableViewController: UITableViewController {
@IBOutlet var table: UITableView!
var produits = [NSManagedObject]()
func refreshStories(refreshControl: UIRefreshControl) {
produits.removeAll()
fetchData()
self.table.reloadData()
refreshControl.endRefreshing()
}
override func viewDidLoad() {
super.viewDidLoad()
self.fetchData()
self.table.addSubview(self.refreshControl!)
self.refreshControl?.addTarget(self, action: #selector(ProduitTableViewController.refreshStories(_:)), forControlEvents: UIControlEvents.ValueChanged)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func fetchData() {
let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
let managedContext = appDelegate.managedObjectContext
//2
let fetchRequest = NSFetchRequest(entityName: "Produits")
let sort = NSSortDescriptor(key:"dateAjout", ascending:true)
fetchRequest.sortDescriptors = [sort]
//3
do {
let results = try managedContext.executeFetchRequest(fetchRequest)
produits = results as! [NSManagedObject]
} catch let error as NSError {
print("Donnees non recu \(error), \(error.userInfo)")
}
}
// MARK: - Table view data source
override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
// #warning Incomplete implementation, return the number of sections
return 1
}
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete implementation, return the number of rows
return self.produits.count
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("Cell")
let produit = produits[indexPath.row]
cell!.textLabel!.text = produit.valueForKey("nom") as? String
/*
let id = produit.valueForKey("id") as? String
let date = produit.valueForKey("date") as? NSDate
let localNotification = UILocalNotification()
localNotification.userInfo = ["id" : id!]
localNotification.soundName = UILocalNotificationDefaultSoundName
localNotification.alertBody = "expiré"
localNotification.fireDate = date
UIApplication.sharedApplication().scheduleLocalNotification(localNotification)
UIApplication.sharedApplication().applicationIconBadgeNumber += 1
*/
return cell!
}
override func tableView(tableView: UITableView, editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [UITableViewRowAction]? {
let supprimer = UITableViewRowAction(style: .Normal, title: "Suppr.") { action, index in
let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
let moc = appDelegate.managedObjectContext
// 3
moc.deleteObject(self.produits[indexPath.row])
appDelegate.saveContext()
// 4
self.produits.removeAtIndex(indexPath.row)
tableView.reloadData()
}
supprimer.backgroundColor = UIColor.redColor()
let update = UITableViewRowAction(style: .Normal, title: "Modifier") { action, index in
}
update.backgroundColor = UIColor.blueColor()
return [supprimer]
}
override func tableView(tableView: UITableView, canEditRowAtIndexPath indexPath: NSIndexPath) -> Bool {
// the cells you would like the actions to appear needs to be editable
return true
}
override func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject!) {
if segue.identifier == "showDetail" {
if let destination = segue.destinationViewController as? DetailViewController {
let row = table.indexPathForSelectedRow?.row
let produit = produits[row!]
let nom = produit.valueForKey("nom") as? String
let id = produit.valueForKey("id") as? String
let detail = produit.valueForKey("detail") as? String
let date = produit.valueForKey("date") as? NSDate
let time = date
let formatter = NSDateFormatter()
formatter.dateFormat = "dd-MM-YY HH:mm"
let formatteddate = formatter.stringFromDate(time!)
destination.dataNom = nom!
destination.dataId = id!
destination.dataDetail = detail!
destination.dataDate = formatteddate
}
}
}
override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
if table.cellForRowAtIndexPath(indexPath) != nil {
self.performSegueWithIdentifier("showDetail", sender: self)
}
}
}
:テーブルビューでのショーのため
最後に更新/詳細を変更する:
import UIKit
import CoreData
class ModifierViewController: UIViewController {
@IBOutlet weak var Nom: UITextField!
@IBOutlet weak var Detail: UITextView!
@IBOutlet weak var Date: UITextField!
var Produits: NSManagedObject!
var managedContext: NSManagedObjectContext!
var modifierNom = ""
var modifierDetail = ""
var modifierDate = ""
var modifierId = ""
override func viewDidLoad() {
super.viewDidLoad()
Nom.text = modifierNom
Detail.text = modifierDetail
Date.text = modifierDate
// Do any additional setup after loading the view.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
@IBAction func Annuler(sender: UIBarButtonItem) {
navigationController?.popViewControllerAnimated(true)
}
@IBAction func Modifier(sender: UIButton) {
let fetchRequest = NSFetchRequest(entityName:"Produits")
fetchRequest.predicate = NSPredicate(format: "nom = %@", modifierNom)
do {
let list = try managedContext.executeFetchRequest(fetchRequest) as! [Produit]
if list.count == 0 // Check notificationId available then not save
{
let newManagedObject = NSEntityDescription.insertNewObjectForEntityForName("Produits", inManagedObjectContext: managedContext)
newManagedObject.setValue(modifierNom, forKey: "nom")
}
// success ...
} catch let error as NSError {
// failure
print("Fetch failed: \(error.localizedDescription)")
}
}
/*
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
// Get the new view controller using segue.destinationViewController.
// Pass the selected object to the new view controller.
}
*/
}
私は、この他のファイルを作成している:あなたがコメントで述べたように
import Foundation
import CoreData
@objc(Produit)
class Produit: NSManagedObject {
@NSManaged var nom:String!
}
私は今、その長いと申し訳ありません –
あなたは、どの行でコードがクラッシュするのですか? – FelixSFD
[任意の値をアンラッピングしている間に "致命的なエラーが予期せず見つからない"とはどういう意味ですか?](http://stackoverflow.com/questions/32170456/what-does-fatal-error-unexpectedly-found-nil- while-unwrap-an-optional-valu) – FelixSFD