[SwiftUI] PHPickerViewController 멀티선택 사진앨범 가져오기(IOS 14이상)

UIImagePickerController 와 다르게 PHPickerViewController는 여러사진을 선택할 수 있습니다.

퍼미션 필요없구요....

 

PhPickerRepresentable.swift

import SwiftUI
import PhotosUI

struct PhPickerRepresentable: UIViewControllerRepresentable {
    @Environment(\.presentationMode) var isPresented
    @Binding var images: [UIImage]
    var selectionLimit: Int
    
    var selectedAssetIdentifiers = [String]()
    var didFinishCloser: (() -> Void)?
 
    func makeUIViewController(context: Context) -> PHPickerViewController {
        var configuration = PHPickerConfiguration(photoLibrary: PHPhotoLibrary.shared())
        configuration.filter = .images
        configuration.selectionLimit = selectionLimit
        configuration.preferredAssetRepresentationMode = .current
        
        // 사진 선택시 선택된 ICON 모양
        // default: 기본 원 모양, ordered: 선택한 순서대로 숫자표시, people: ??)
        if #available(iOS 15.0, *) {
            configuration.selection = .ordered
            configuration.preselectedAssetIdentifiers = selectedAssetIdentifiers
        } else {
            // Fallback on earlier versions
        }
        
        let photoPickerViewController = PHPickerViewController(configuration: configuration)
        photoPickerViewController.delegate = context.coordinator
        return photoPickerViewController
    }
    
    func updateUIViewController(_ uiViewController: PHPickerViewController, context: Context) {
        
    }
    
    func makeCoordinator() -> Coordinator {
        Coordinator(self)
    }
    
    class Coordinator: PHPickerViewControllerDelegate {
        private let parent: PhPickerRepresentable

        init(_ parent: PhPickerRepresentable) {
          self.parent = parent
        }

        func picker(_ picker: PHPickerViewController, didFinishPicking results: [PHPickerResult]) {
            
            for result in results {
                if result.itemProvider.canLoadObject(ofClass: UIImage.self) {
                    result.itemProvider.loadObject(ofClass: UIImage.self) {[weak self] newImage, error in
                        
                        guard let `self` = self else { return }
                        
                        if let error = error {
                            print("Can't load image : \(error.localizedDescription)")
                        } else if let image = newImage as? UIImage {
                            self.parent.images.append(image)
                        }
                    }
                }
            }
            
            self.parent.isPresented.wrappedValue.dismiss()
            self.parent.didFinishCloser?()
        }
      }
}

 

[사용방법]

struct ContentView: View {
	
    @State var isShowPHPicketView: Bool = false
    @State var phImages: [UIImage] = []
    
    var body: some View {
    	Button {
            isShowPHPicketView.toggle()
        } label: {
            HStack {
                Image(systemName: "globe")
                Text("PHPicker PhotoLibary")
            }
        }
        .modifier(GradientButtonViewModifier())
        .fullScreenCover(isPresented: $isShowPHPicketView,
                         content: {
            PhPickerRepresentable(images: $phImages, selectionLimit: 10) {
                
            }
            .ignoresSafeArea() 
        })
        
        ScrollView {
            ForEach(phImages, id: \.self) { uiImage in
                Image(uiImage: uiImage)
                    .resizable()
                    .aspectRatio(contentMode: .fit)
            }
        }
    }
}