fatale Fehler: Index außerhalb des Bereichs (bei dem Versuch, ein Bild zu einer Tabellenansicht zu laden)

Question

Ich versuche, ein Bild von einer URL zu laden, hier ist der Code:

import UIKit 

class TripsTableViewCell : UITableViewCell 
{ 

    @IBOutlet weak var tripName: UILabel! 
    @IBOutlet weak var tripImage: UIImageView! 
} 
    //let urlString = "http://127.0.0.1:8000/v1/trips/" 

class TripsTableViewController: UITableViewController { 
var myIndex = 0 
var trips = [Trip]() 
var tripNameArray = [String]() 
var tripImageArray = [String]() 



override func viewDidLoad() { 
    super.viewDidLoad() 
    self.newGetFunction() 

    /*let trip0:Trip = Trip(id: 1, name: "Dead Sea", location: "Amman", hostedBy: "Tarek", time: "8:00", spokenLanguage: "English", maxPeople: 25, meetingPoint: "7th Circle", image: "https://ichef-1.bbci.co.uk/news/976/cpsprodpb/75E7/production/_89938103_deadseadrone.jpg") 
    let trip1:Trip = Trip(id: 1, name: "Aaqaba", location: "Amman", hostedBy: "Tarek", time: "8:00", spokenLanguage: "English", maxPeople: 25, meetingPoint: "7th Circle", image: "https://ichef-1.bbci.co.uk/news/976/cpsprodpb/75E7/production/_89938103_deadseadrone.jpg") 


    let trip2:Trip = Trip(id: 1, name: "Maeen", location: "Amman", hostedBy: "Tarek", time: "8:00", spokenLanguage: "English", maxPeople: 25, meetingPoint: "7th Circle", image: "https://ichef-1.bbci.co.uk/news/976/cpsprodpb/75E7/production/_89938103_deadseadrone.jpg") 


    let trip3:Trip = Trip(id: 1, name: "Petra", location: "Amman", hostedBy: "Tarek", time: "8:00", spokenLanguage: "English", maxPeople: 25, meetingPoint: "7th Circle", image: "https://ichef-1.bbci.co.uk/news/976/cpsprodpb/75E7/production/_89938103_deadseadrone.jpg") 


    let trip4:Trip = Trip(id: 1, name: "Jerash", location: "Amman", hostedBy: "Tarek", time: "8:00", spokenLanguage: "English", maxPeople: 25, meetingPoint: "7th Circle", image: "https://ichef-1.bbci.co.uk/news/976/cpsprodpb/75E7/production/_89938103_deadseadrone.jpg") 

    let trip5:Trip = Trip(id: 1, name: "Um Qais", location: "Amman", hostedBy: "Tarek", time: "8:00", spokenLanguage: "English", maxPeople: 25, meetingPoint: "7th Circle", image: "https://ichef-1.bbci.co.uk/news/976/cpsprodpb/75E7/production/_89938103_deadseadrone.jpg") 


    let trip6:Trip = Trip(id: 1, name: "Amman", location: "Amman", hostedBy: "Tarek", time: "8:00", spokenLanguage: "English", maxPeople: 25, meetingPoint: "7th Circle", image: "https://ichef-1.bbci.co.uk/news/976/cpsprodpb/75E7/production/_89938103_deadseadrone.jpg") 

    trips.append(trip0) 
    trips.append(trip1) 
    trips.append(trip2) 
    trips.append(trip3) 
    trips.append(trip4) 
    trips.append(trip5) 
    trips.append(trip6) 

    print("HERE") 
    print(trips) 
    */ 
    tableView.delegate = self; 
    tableView.dataSource = self; 
    // Uncomment the following line to preserve selection between presentations 
    // self.clearsSelectionOnViewWillAppear = false 

    // Uncomment the following line to display an Edit button in the navigation bar for this view controller. 
    // self.navigationItem.rightBarButtonItem = self.editButtonItem() 
} 

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

// MARK: - Table view data source 


override func numberOfSections(in 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 tripNameArray.count 
} 


override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell { 

    let cell = tableView.dequeueReusableCell(withIdentifier: "cell") as! TripsTableViewCell 
    cell.tripName.text = tripNameArray[indexPath.row] 
    //cell.tripImage.downloadImage(from: self.tripImageArray[indexPath.row]) 
    let imgURL = NSURL(string: tripImageArray[indexPath.row]) 
    if imgURL != nil{ 
     let data = NSData(contentsOf: (imgURL as URL?)!) 
     cell.tripImage.image = UIImage(data: data! as Data) 
    } 

    //Nart's Work 

    /*cell.tripImage.image = UIImage(named: trips[indexPath.row].Image) 
    let t = trips[indexPath.row] 
    cell.tripName.text = t.Name 
    print(indexPath.row) 
    print(trips[indexPath.row].Name)*/ 

    return cell 
} 


override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) { 
    myIndex = indexPath.row 
    NSLog("%d",myIndex) 
    performSegue(withIdentifier: "segue", sender: self) 
} 

override func prepare(for segue: UIStoryboardSegue, sender: Any?) { 
} 

func newGetFunction() 
{ 
    let url = URL (string: "http://127.0.0.1:8000/v1/trips/") 
    let task = URLSession.shared.dataTask(with: url!) { (data, response, error) in 
     if error != nil 
     { 
      print ("ERROR") 
     } 
     else 
     { 
      if let content = data 
      { 
       do 
       { 
        //Array 
        let myJson = try JSONSerialization.jsonObject(with: content, options: JSONSerialization.ReadingOptions.mutableContainers) as AnyObject 
        print(myJson) 
        var myJsonArray = (myJson as! NSArray) as Array 
        for trip in myJsonArray 
        { 
         if let tripDict = trip as? NSDictionary{ 
          if let name = tripDict.value(forKey: "name"){ 
           self.tripNameArray.append(name as! String) 
          } 
          if let name = tripDict.value(forKey: "image"){ 
           if let imgName = (name as? String){ 
           self.tripImageArray.append((imgName as? String)!) 
          } 
          } 
          OperationQueue.main.addOperation ({ 
           self.tableView.reloadData() 
          }) 
         } 
        } 
       } 
       catch 
       { 
       } 
      } 
     } 
    } 
    task.resume() 
} 

}

I ist einen Fehler auf dieser Linie bekommen: -

let imgURL = NSURL(string: tripImageArray[indexPath.row]) 

und die Fehler sind: -

1) PAC Fetch fehlgeschlagen mit Fehlern [NSURLErrorDomain: -1003]

2) [] nw_proxy_resolver_create_parsed_array PAC Auswertung Fehler: NSURLErrorDomain: -1003

3) fatale Fehler: Index außerhalb des zulässigen Bereichs

Answer 1

Sie versuchen, jedes Einzelteil in tripImageArray auf den Tisch Ansicht anzuzeigen aber für numberOfRowsInSection Funktion, geben Sie die Anzahl der tripNameArray. Anscheinend hat Ihr tripNameArray Array mehr Element als tripImageArray, so dass Sie diesen Fehler haben.

Sie müssen aus einer von ihnen als Anzahl für Ihre Tabellenansicht wählen.

Answer 2

Die Größe tripImageArray und tripNameArray nicht ähnlich sind, ändern Sie den Teil newGetFunction zu:

 for trip in myJsonArray 
          { 
           if let tripDict = trip as? NSDictionary{ 
            if let name = tripDict.value(forKey: "name"){ 
             self.tripNameArray.append(name as! String) 
             if let name = tripDict.value(forKey: "image"){ 
              if let imgName = (name as? String){ 
               self.tripImageArray.append((imgName as? String)!) 
              } 
              else{ 
              // append default image 
             self.tripImageArray.append("default-img.jpg") 
              } 
            } 
            else{ 
              // append default image 
              self.tripImageArray.append("default-img.jpg") 
            } 
            OperationQueue.main.addOperation ({ 
             self.tableView.reloadData() 
            }) 
           } 
          }