SwiftUI AspectRatio不适用于相机中的图像

Question

我不确定这是否是特定于SwiftUI的问题。无论如何，我有一个UIImagePickerController，我通过使用UIViewControllerRepresentableProtocol实现了它到SwiftUI视图中：

struct ContentView: View {

@State var showCameraView = false
@State var showImagePicker = false
@State var UserImage = Image("user")

var body: some View {
    VStack {
        UserImage
            .resizable()
            .frame(width: 200, height: 200)
            .scaledToFit()
            .background(Color.gray)
            .cornerRadius(200)
            .clipped()
        Button(action: {self.showImagePicker = true}) {
            Text("Choose from camera roll")
        }
            .padding(.top, 10)
    }
        .sheet(isPresented: $showImagePicker) {
            ImagePicker(showImagePicker: self.$showImagePicker, pickedImage: self.$UserImage)
            }

}

}

struct ImagePicker: UIViewControllerRepresentable {

@Binding var showImagePicker: Bool
@Binding var pickedImage: Image

func makeCoordinator() -> ImagePicker.Coordinator {
    Coordinator(self)
}

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

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

class Coordinator: NSObject, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
    var parent: ImagePicker

    init(_ imagePicker: ImagePicker) {
        self.parent = imagePicker
    }

    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
        let uiImage = info[UIImagePickerController.InfoKey.originalImage] as! UIImage
        parent.pickedImage = Image(uiImage: uiImage)
        parent.showImagePicker = false
    }

    func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
        parent.showImagePicker = false
    }
}

}

当选择设备的相机未拍摄的图像时，它可以正常工作。但是，每次我选择由相机本身拍摄的图像时，.aspectRatio修饰符似乎都不会应用，因为在这种情况下，加载的图像的尺寸会变形。是否有人在我的代码中发现错误或知道解决方案？

Answer 1

我遇到了同样的问题。我没有找到解决方案，但是找到了解决方法。我在协调器类中使用函数调整了图像的大小，但我将其返回到视图。为我工作。

func resizeImage(image: UIImage) -> UIImage {
    let scale = 300 / image.size.width
    let newHeight = image.size.height * scale
    UIGraphicsBeginImageContext(CGSize(width: 300, height: newHeight))
    image.draw(in: CGRect(x: 0, y: 0, width: 300, height: newHeight))
    let newImage = UIGraphicsGetImageFromCurrentImageContext()
    UIGraphicsEndImageContext()

    return newImage!
}