Cannot find 'LocationsData' in scope - json

Question

My project contains the JSON file 'LocationsData.json'
An error is displayed 'Cannot find 'LocationsData' in scope'
(If needed - the following code is contained within my 'Data.swift' file, which is what the var 'locationsDataTypes' in the 'SearchRedirect.swift' is referencing)
import UIKit
import SwiftUI
import CoreLocation
let locationsDataTypes: [LocationsDataTypes] = load("LocationsData.json")
func load<T: Decodable>(_ filename: String) -> T {
let data: Data
guard let file = Bundle.main.url(forResource: filename, withExtension: nil)
else {
fatalError("Couldn't find \(filename) in main bundle.")
}
do {
data = try Data(contentsOf: file)
} catch {
fatalError("Couldn't load \(filename) from main bundle:\n\(error)")
}
do {
let decoder = JSONDecoder()
return try decoder.decode(T.self, from: data)
} catch {
fatalError("Couldn't parse \(filename) as \(T.self):\n\(error)")
}
}
final class ImageStore {
typealias _ImageDictionary = [String: CGImage]
fileprivate var images: _ImageDictionary = [:]
fileprivate static var scale = 2
static var shared = ImageStore()
func image(name: String) -> Image {
let index = _guaranteeImage(name: name)
return Image(images.values[index], scale: CGFloat(ImageStore.scale), label: Text(name))
}
static func loadImage(name: String) -> CGImage {
guard
let url = Bundle.main.url(forResource: name, withExtension: "jpg"),
let imageSource = CGImageSourceCreateWithURL(url as NSURL, nil),
let image = CGImageSourceCreateImageAtIndex(imageSource, 0, nil)
else {
fatalError("Couldn't load image \(name).jpg from main bundle.")
}
return image
}
fileprivate func _guaranteeImage(name: String) -> _ImageDictionary.Index {
if let index = images.index(forKey: name) { return index }
images[name] = ImageStore.loadImage(name: name)
return images.index(forKey: name)!
}
}

Answer 1

As pawello2222 hinted, locationsData isn't declared anywhere.
I suspect that you have your List view builder function written incorrectly.
Instead of this...
List(LocationsData, id: \.id) { locationsDataTypes in
Try the following...
List(locationsDataTypes, id: \.id) { locationsData in
...
Image(locationsData.imageName)
.resizable
...
}
Where locationsDataTypes is the collection, in your case the array of LocationsDataTypes and locationsData is the single instance of each iteration through that collection.
Also, when writing a question in stack overflow, best practice is to include the relevant code within a code block in your question, not accessed via a hyperlink. There are many reasons for this, here are a couple...
it is easier for the SO community to copy and paste your code into their solution as a part of their response, saving us all a lot of time;
links break, leaving your question without context for anyone who might have the same problem in the future.