Swift 4: So erhalten Sie verschachtelte JSON-Daten und zeigen UIimageView in CollectionView an ⇐ IOS

[Guest]

Ich möchte alle Bilder basierend auf dem von der API erfassten Pfad in ImageView voncollectionViewController anzeigen.
Ich formatiere JSON-Daten, die von der API erfasst wurden, mit Codable.Ich möchte alle darin enthaltenen verschachtelten Daten abrufen (Bild der for-Anweisung)
Jetzt versuche ich, einen Wert abzurufen, indem ich let imagePath = store deklariere! [IndexPath.row] .photos.map {$ 0.path}, aber es wird ein Fehler angezeigt:

Wert des Typs kann nicht konvertiert werden‘ Niemals erwarteter Argumenttyp „String“

StoreViewController

Code: Select all

import UIKit
class StoreViewController:
UIViewController,UICollectionViewDataSource,UICollectionViewDelegate {
var store_id = ""
var store : [Store]?

@IBOutlet weak var collectionView: UICollectionView!
@IBOutlet weak var mainImage: UIImageView!
@IBOutlet weak var nameLabel: UILabel!
@IBOutlet weak var locationLabel: UILabel!
@IBOutlet weak var tagLabel: UILabel!
@IBOutlet weak var UIView: UIView!

override func viewDidLoad() {
super.viewDidLoad()

collectionView.dataSource = self
collectionView.delegate = self

let url = URL(string: "http://localhost:8000/store/api?store_id=" + store_id)
let request = URLRequest(url: url!)
let session = URLSession.shared

let encoder: JSONEncoder = JSONEncoder()
encoder.dateEncodingStrategy = .iso8601
encoder.outputFormatting = .prettyPrinted

session.dataTask(with: request){(data, response, error)in if error == nil,
let data = data,
let response = response as? HTTPURLResponse{

let decoder: JSONDecoder = JSONDecoder()
decoder.dateDecodingStrategy = .iso8601
do {

let json = try decoder.decode(Store.self, from: data)

//                for store in (json.stores){
//                    for photo in (store.photos){
//                        print(photo.path as Any)
//                    }
//                }

self.store = [json]

DispatchQueue.main.async {
self.nameLabel.text = json.name
self.locationLabel.text = json.location
}

} catch {
print("error:", error.localizedDescription)

}

}

}.resume()

}

override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
let uiViewPath = UIBezierPath(roundedRect: UIView.bounds, byRoundingCorners: [.topLeft, .topRight], cornerRadii: CGSize(width: 8, height: 8))
let uiViewMask = CAShapeLayer()
uiViewMask.path = uiViewPath.cgPath
UIView.layer.mask = uiViewMask

//tags
tagLabel.textAlignment = NSTextAlignment.center
let tagLabelPath = UIBezierPath(roundedRect: tagLabel.bounds, byRoundingCorners: [.topLeft, .topRight,.bottomLeft,.bottomRight], cornerRadii: CGSize(width: 8, height: 8))
let tagLabelmask = CAShapeLayer()
tagLabelmask.path = tagLabelPath.cgPath
tagLabel.layer.mask = tagLabelmask

}

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

//Collection
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {

let imageCell:UICollectionViewCell = collectionView.dequeueReusableCell(withReuseIdentifier: "Cell",for: indexPath)

let imageView = imageCell.contentView.viewWithTag(1) as! UIImageView
//let imageView = UIImageView(frame: CGRect(x:0, y:0, width:imageCell.frame.size.width, height:imageCell.frame.size.height))

let imagePath = store![indexPath.row].photos.map{$0.path}
let imageURL = URL(string: "http://127.0.0.1:8000/photos/"  + imagePath)
if imageURL == nil {
print("nil")
}else{
DispatchQueue.global().async {
let data = try? Data(contentsOf: imageURL!)
if let data = data {
let image = UIImage(data: data)
DispatchQueue.main.async {
imageView.image = image
}
}
}
}

//print(store)
print(imagePath)
return imageCell
}

func collectionView(_ collectionView: UICollectionView,
numberOfItemsInSection section: Int) -> Int {

return store?.count ?? 0
}

}

Codierbar

Code: Select all

struct Store : Codable {
let id : Int
let name : String
let location : String
let price : String
let open_time : String
let closed_day : String
let categories : [categories]
let tags : [tags]
let photos : [photos]

struct categories : Codable {
let id : Int
let name : String
}

struct  tags: Codable {
let id : Int
let name : String
}

struct photos : Codable{
let id : Int
let path : String
}
}

Mein Anzeigebild