Pick image from gallery and upload to server iOS - SwiftUI and PHP

Pick image from gallery and upload to server – SwiftUI and PHP

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Learn how to upload image from SwiftUI app. We will not be using any external library in this tutorial. All code is done in native SwiftUI. We will use a picker from an iPhone gallery and upload it to your server. We will be using SwiftUI for developing the app and PHP for uploading the image to the server.

First, you need to create a file in your project named ImagePicker.swift and paste the following content in it:

//
//  ImagePicker.swift
//
//  Created by Adnan Afzal on 30/10/2020.
//  Copyright © 2020 Adnan Afzal. All rights reserved.
//

import Foundation
import SwiftUI

extension View {
    public func asUIImage() -> UIImage {
        let controller = UIHostingController(rootView: self)
        
        controller.view.frame = CGRect(x: 0, y: CGFloat(Int.max), width: 1, height: 1)
        UIApplication.shared.windows.first!.rootViewController?.view.addSubview(controller.view)
        
        let size = controller.sizeThatFits(in: UIScreen.main.bounds.size)
        controller.view.bounds = CGRect(origin: .zero, size: size)
        controller.view.sizeToFit()
        
        // here is the call to the function that converts UIView to UIImage: `.asImage()`
        let image = controller.view.asUIImage()
        controller.view.removeFromSuperview()
        return image
    }
}

extension UIView {
// This is the function to convert UIView to UIImage
    public func asUIImage() -> UIImage {
        let renderer = UIGraphicsImageRenderer(bounds: bounds)
        return renderer.image { rendererContext in
            layer.render(in: rendererContext.cgContext)
        }
    }
}

struct ImagePicker: UIViewControllerRepresentable {

    @Environment(\.presentationMode)
    var presentationMode

    @Binding var image: Image?

    class Coordinator: NSObject, UINavigationControllerDelegate, UIImagePickerControllerDelegate {

        @Binding var presentationMode: PresentationMode
        @Binding var image: Image?

        init(presentationMode: Binding<PresentationMode>, image: Binding<Image?>) {
            _presentationMode = presentationMode
            _image = image
        }

        func imagePickerController(_ picker: UIImagePickerController,
                                   didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
            let uiImage = info[UIImagePickerController.InfoKey.originalImage] as! UIImage
            image = Image(uiImage: uiImage)
            presentationMode.dismiss()

        }

        func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
            presentationMode.dismiss()
        }

    }

    func makeCoordinator() -> Coordinator {
        return Coordinator(presentationMode: presentationMode, image: $image)
    }

    func makeUIViewController(context: UIViewControllerRepresentableContext<ImagePicker>) -> UIImagePickerController {
        let picker = UIImagePickerController()
        picker.delegate = context.coordinator
        return picker
    }

    func updateUIViewController(_ uiViewController: UIImagePickerController,
                                context: UIViewControllerRepresentableContext<ImagePicker>) {

    }

}

Now we have created a video tutorial to help you done this task. You can follow the video below:

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