SwiftUI: Is it possible to let the user scale an image chosen with PHpicker? - swift

Question

I have an image picker created with PHPicker, and I was wondering if it is possible to let the user scale the chosen image?
This is not the entire code, but just the code for the makeUIViewController which I think is what is needed to solve this problem. I can of course provide the rest of the code if necessary.
This is what I'm looking for
func makeUIViewController(context: Context) -> PHPickerViewController {
var config = PHPickerConfiguration(photoLibrary: PHPhotoLibrary.shared())
config.filter = .images
config.selectionLimit = 1
let controller = PHPickerViewController(configuration: config)
controller.delegate = context.coordinator
return controller
}

Answer 1

can use this one line after choose the image to fixed height and width of your image
Image(room.thumbnailImage)
.resizable()
.frame(width: 32.0, height: 32.0)
or here i am sharing my running work with you checkout function didFinishPicking and var body: some View
import SwiftUI
import PhotosUI
struct PhotoPickerDemo: View {
#State private var isPresented: Bool = false
#State var pickerResult: [UIImage] = []
var config: PHPickerConfiguration {
var config = PHPickerConfiguration(photoLibrary: PHPhotoLibrary.shared())
config.filter = .images //videos, livePhotos...
config.selectionLimit = 0 //0 => any, set 1-2-3 for har limit
return config
}
var body: some View {
ScrollView {
LazyVStack {
Button("Present Picker") {
isPresented.toggle()
}.sheet(isPresented: $isPresented) {
PhotoPicker(configuration: self.config,
pickerResult: $pickerResult,
isPresented: $isPresented)
}
ForEach(pickerResult, id: \.self) { image in
Image.init(uiImage: image)
.resizable()
.frame(width: UIScreen.main.bounds.width, height: 250, alignment: .center)
.aspectRatio(contentMode: .fit)
}
}
}
}
}
struct PhotoPicker: UIViewControllerRepresentable {
let configuration: PHPickerConfiguration
#Binding var pickerResult: [UIImage]
#Binding var isPresented: Bool
func makeUIViewController(context: Context) -> PHPickerViewController {
let controller = PHPickerViewController(configuration: configuration)
controller.delegate = context.coordinator
return controller
}
func updateUIViewController(_ uiViewController: PHPickerViewController, context: Context) { }
func makeCoordinator() -> Coordinator {
Coordinator(self)
}
/// PHPickerViewControllerDelegate => Coordinator
class Coordinator: PHPickerViewControllerDelegate {
private let parent: PhotoPicker
init(_ parent: PhotoPicker) {
self.parent = parent
}
func picker(_ picker: PHPickerViewController, didFinishPicking results: [PHPickerResult]) {
for image in results {
if image.itemProvider.canLoadObject(ofClass: UIImage.self) {
image.itemProvider.loadObject(ofClass: UIImage.self) { (newImage, error) in
if let error = error {
print(error.localizedDescription)
} else {
self.parent.pickerResult.append(newImage as! UIImage)
}
}
} else {
print("Loaded Assest is not a Image")
}
}
// dissmiss the picker
parent.isPresented = false
}
}
}
struct photoPickerDemo_Previews: PreviewProvider {
static var previews: some View {
PhotoPickerDemo()
}
}
or if you want to crop via user interface like attach picture
Step 1
Using Xcode 12, go to File -> Swift Packages -> Add Package Dependency and enter https://github.com/marshallino16/ImageCropper
Step 2
in your didFinishPicking method where you are receiving selected image pass it in this package using these lines
let ratio = CropperRatio(width: 1, height: 1)//square ratio for crop
ImageCropperView(image: Image(yourSelectedImageHere),cropRect: nil,ratio: ratio).onCropChanged { (newCrop) in
print(newCrop)//here you will receive cropped image
}
edited use of ImageCropperView
struct PhotoPicker: UIViewControllerRepresentable {
let configuration: PHPickerConfiguration
#Binding var pickerResult: [UIImage]
#Binding var isPresented: Bool
func makeUIViewController(context: Context) -> PHPickerViewController {
let controller = PHPickerViewController(configuration: configuration)
controller.delegate = context.coordinator
return controller
}
func updateUIViewController(_ uiViewController: PHPickerViewController, context: Context) { }
func makeCoordinator() -> Coordinator {
Coordinator(self)
}
/// PHPickerViewControllerDelegate => Coordinator
class Coordinator: PHPickerViewControllerDelegate {
private let parent: PhotoPicker
init(_ parent: PhotoPicker) {
self.parent = parent
}
func picker(_ picker: PHPickerViewController, didFinishPicking results: [PHPickerResult]) {
for image in results {
if image.itemProvider.canLoadObject(ofClass: UIImage.self) {
image.itemProvider.loadObject(ofClass: UIImage.self) { (newImage, error) in
if let error = error {
print(error.localizedDescription)
} else {
let ratio = CropperRatio(width: 1, height: 1)//square ratio for crop
ImageCropperView(image: Image(newImage),cropRect: nil,ratio: ratio).onCropChanged { (newCrop) in
print(newCrop)//here you will receive cropped image
}
}
}
} else {
print("Loaded Assest is not a Image")
}
}
// dissmiss the picker
parent.isPresented = false
}
}
}