72 lines
1.8 KiB
Swift
72 lines
1.8 KiB
Swift
//
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// URLImageModel.swift
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// Example (iOS)
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//
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// Copyright © 2021 Xmartlabs SRL. All rights reserved.
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// Adapted by Xmartlabs from https://github.com/SchwiftyUI/NewsApiApp/blob/master/NewsApp/Model/UrlImageModel.swift
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//
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import Foundation
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import SwiftUI
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class URLImageModel: ObservableObject {
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@Published var image: UIImage?
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var urlString: String?
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var imageCache = ImageCache.getImageCache()
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init(urlString: String?) {
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self.urlString = urlString
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loadImage()
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}
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func loadImage() {
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if loadImageFromCache() {
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return
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}
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loadImageFromUrl()
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}
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func loadImageFromUrl() {
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guard let urlString = urlString else {
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return
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}
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let url = URL(string: urlString)!
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let task = URLSession.shared.dataTask(with: url, completionHandler: getImageFromResponse(data:response:error:))
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task.resume()
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}
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func loadImageFromCache() -> Bool {
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guard let urlString = urlString else {
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return false
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}
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guard let cacheImage = imageCache.get(forKey: urlString) else {
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return false
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}
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image = cacheImage
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return true
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}
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func getImageFromResponse(data: Data?, response: URLResponse?, error: Error?) {
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guard error == nil else {
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print("Error: \(error!)")
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return
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}
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guard let data = data else {
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print("No data found")
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return
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}
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DispatchQueue.main.async {
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guard let loadedImage = UIImage(data: data) else {
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return
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}
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self.imageCache.set(forKey: self.urlString!, image: loadedImage)
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self.image = loadedImage
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}
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}
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}
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