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London
Sunday, May 19, 2024

ios – SwiftUI .onAppear Does Not replace @State variable with returned worth


I am making an attempt to name a perform I created which ought to fetch URLs from google cloud storage (firebase) when the view seems. I haven’t got any errors, however the code does not show any of my pictures. Have I missed a step within the building of my code? By the way in which the code proven under is self-contained inside the view. I plan on seperating issues as soon as I work out what is going on on.

This is the code I’ve to this point:

import SwiftUI
import FirebaseStorage



func testingCall(){
    let _ = print("Check")
}


struct GalleryView: View {
    @State var pictures = [String]()
    
    func getDownloadURl() -> [String] {
            var photoURLS = [String]()
            let ref = Storage.storage().reference()
            
            let storageReference = ref.baby("pictures/")
            storageReference.listAll { (consequence, error) in
              if let error = error {
                print(error)
              }
                for merchandise in consequence!.gadgets {
                //Listing storage reference
                let storageLocation = String(describing: merchandise)
                let gsReference = Storage.storage().reference(forURL: storageLocation)
                
                // Fetch the obtain URL
                gsReference.downloadURL { url, error in
                  if let error = error {
                    // Deal with any errors
                    print(error)
                  } else {
                    // Get the obtain URL for every merchandise storage location
                    print(url!)
                    print(sort(of: url!))
                    print(sort(of: url!.absoluteString))
                      photoURLS.append(url!.absoluteString)
                      print(photoURLS)
                  }
                }
                
                
              }
            }
            return photoURLS
        }
    var physique: some View {
        NavigationView {
            ScrollView {
                LazyVGrid(columns: [
                    GridItem(.fixed(100)),
                    GridItem(.fixed(100)),
                    GridItem(.fixed(100))
                ], spacing: 12, content material:{
                    ForEach(pictures, id: .self){ photoURL in
                        HStack {
                            Spacer()
                            AsyncImage(url: URL(string:photoURL)){ end in
                                if let consequence = consequence.picture{
                                    consequence
                                        .resizable()
                                        .body(width:124,peak:124)
                                }
                                
                            }
                            Spacer()
                        }
                        .padding()
                        .background(Shade.purple)
                        
                    }
                })
            }.navigationTitle("Gallery")
                .onAppear{
                    pictures = self.getDownloadURl()
                }
        }
    }
}

Thanks prematurely for any suggestions. I enormously admire it.

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