我试图弄清楚我的代码是否导致了问题，或者我是否应该向 Apple 提交错误报告。
在一个新项目中，我有以下代码：
内容视图（）
import SwiftUI
struct ContentView: View {
@State private var showingImagePicker = false
@State private var inputImage: UIImage?
@State private var image: Image?
var body: some View {
ZStack {
Rectangle()
.fill(Color.secondary)
if image != nil {
image?
.resizable()
.scaledToFit()
} else {
Text("Tap to select a picture")
.foregroundColor(.white)
.font(.headline)
}
}
.onTapGesture {
self.showingImagePicker = true
}
.sheet(isPresented: $showingImagePicker, onDismiss: loadImage){
SystemImagePicker(image: self.$inputImage)
}
}
func loadImage() {
guard let inputImage = inputImage else { return }
image = Image(uiImage: inputImage)
}
}
SystemImagePicker.swift
import SwiftUI
struct SystemImagePicker: UIViewControllerRepresentable {
@Environment(\.presentationMode) private var presentationMode
@Binding var image: UIImage?
func makeUIViewController(context: Context) -> PHPickerViewController {
var configuration = PHPickerConfiguration()
configuration.selectionLimit = 1
configuration.filter = .images
let picker = PHPickerViewController(configuration: configuration)
picker.delegate = context.coordinator
return picker
}
func updateUIViewController(_ uiViewController: PHPickerViewController, context: Context) {
}
func makeCoordinator() -> Coordinator {
return Coordinator(parent: self)
}
class Coordinator: NSObject, PHPickerViewControllerDelegate {
let parent: SystemImagePicker
init(parent: SystemImagePicker) {
self.parent = parent
}
func picker(_ picker: PHPickerViewController, didFinishPicking results: [PHPickerResult]) {
for img in results {
guard img.itemProvider.canLoadObject(ofClass: UIImage.self) else { return }
img.itemProvider.loadObject(ofClass: UIImage.self) { image, error in
if let error = error {
print(error)
return
}
guard let image = image as? UIImage else { return }
self.parent.image = image
self.parent.presentationMode.wrappedValue.dismiss()
}
}
}
}
}
但是当只选择一个图像（根据我的代码，而不是选择然后“改变主意”并选择另一个不同的图像）时，我在 Xcode 中运行内存图时会出现这些泄漏。
是我的代码，还是在 Apple 上？
对于它的价值，图像选择Cancel器上的按钮也不起作用。因此，用户不能只关闭选择器工作表，必须选择一个图像来关闭工作表。
关于旧 UIImagePickerController 的进一步说明
以前，我已将此代码用于旧UIImagePickerController
import SwiftUI
struct ImagePicker: UIViewControllerRepresentable {
@Environment(\.presentationMode) var presentationMode
@Binding var image: UIImage?
class Coordinator: NSObject, UINavigationControllerDelegate, UIImagePickerControllerDelegate {
let parent: ImagePicker
init(_ parent: ImagePicker) {
self.parent = parent
}
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
if let uiImage = info[.originalImage] as? UIImage {
parent.image = uiImage
}
parent.presentationMode.wrappedValue.dismiss()
}
deinit {
print("deinit")
}
}
func makeCoordinator() -> Coordinator {
Coordinator(self)
}
func makeUIViewController(context: UIViewControllerRepresentableContext<ImagePicker>) -> UIImagePickerController {
let picker = UIImagePickerController()
picker.delegate = context.coordinator
return picker
}
func updateUIViewController(_ uiViewController: UIImagePickerController, context: UIViewControllerRepresentableContext<ImagePicker>) {
}
}
这也会导致选择图像的泄漏，但要少得多：
