1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 | / / / / ContentView.swift / / Testapp / / / / Created by Cairocoders / / import SwiftUI struct ContentView: View { let getURL = "https://images.pexels.com/photos/3225517/pexels-photo-3225517.jpeg?auto=compress&cs=tinysrgb&dpr=1&w=500" var body: some View { URLImage(url: getURL) .aspectRatio(contentMode: .fit) .frame(width: 200 ) } } struct ContentView_Previews: PreviewProvider { static var previews: some View { ContentView() } } struct URLImage: View { private enum LoadState { case loading, success, failure } private class Loader: ObservableObject { var data = Data() var state = LoadState.loading init(url: String) { guard let parsedURL = URL(string: url) else { fatalError( "Invalid URL: \(url)" ) } URLSession.shared.dataTask(with: parsedURL) { data, response, error in if let data = data, data.count > 0 { self .data = data self .state = .success } else { self .state = .failure } DispatchQueue.main.async { self .objectWillChange.send() } }.resume() } } @StateObject private var loader: Loader var loading: Image var failure: Image var body: some View { selectImage() .resizable() } init(url: String, loading: Image = Image(systemName: "photo" ), failure: Image = Image(systemName: "multiply.circle" )) { _loader = StateObject(wrappedValue: Loader(url: url)) self .loading = loading self .failure = failure } private func selectImage() - > Image { switch loader.state { case .loading: return loading case .failure: return failure default: if let image = UIImage(data: loader.data) { return Image(uiImage: image) } else { return failure } } } } |
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Tuesday, May 25, 2021
SwiftUI how to add URL image
SwiftUI how to add URL image