在风景中使用相机的图像选择器无法正常工作（SwiftUI）

Question

我的图像选择器在两个方向上都可以与照片库一起使用，但是使用相机它不能正确调整为横向。

这是它的样子： 景观： 肖像：

这是我的代码：

File1, UIViewControllerRepresentable:

import UIKit
import SwiftUI

struct ImagePicker: UIViewControllerRepresentable {

var sourceType: UIImagePickerController.SourceType = .photoLibrary

@Binding var selectedImage: UIImage
@Environment(\.presentationMode) private var presentationMode

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

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

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



final class Coordinator: NSObject, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
    
    
    var parent: ImagePicker
    
    init(_ parent: ImagePicker) {
        self.parent = parent
    }
    
    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
        
        if let image = info[UIImagePickerController.InfoKey.originalImage] as? UIImage {
            parent.selectedImage = image
        }
        
        parent.presentationMode.wrappedValue.dismiss()
    }
}
}

文件2，使用它：

.fullScreenCover(isPresented: $isShowPhotoLibrary) {
            ImagePicker(sourceType: .camera, selectedImage: self.$image)
        }

我不固定使用全屏覆盖，只是这样做是因为它至少部分起作用。

如果有人能提供帮助，我将不胜感激。

Answer 1

可能有一个变通解决方案，但根据 Apple 文档：

“UIImagePickerController 类仅支持纵向模式。....”

https://developer.apple.com/documentation/uikit/uiimagepickercontroller

也许你可以使用：

let theCamera = AVCaptureDevice.default(for: .video)

这很好用。

Answer 2

解决这个问题的方法是创建一个调用您的 ImagePicker 的特定视图，并将该视图锁定为纵向模式。

首先，在 AppDelegate 中，添加这个，这是我从这个视频中学到的： https://www.youtube.com/watch?v=NNY6C9-QWCI

   static var orientationLock = UIInterfaceOrientationMask.all
    
    func application(_ application: UIApplication, supportedInterfaceOrientationsFor window: UIWindow?) -> UIInterfaceOrientationMask {
        return AppDelegate.orientationLock
    }

然后，制作视图，例如ImagePickerView

import SwiftUI

struct ImagePickerView: View {
    
    @State private var image = UIImage()
  
    var body: some View {
        ZStack {
            ImagePicker(sourceType: .camera, selectedImage: $image)
        }
        .onAppear() {
            UIDevice.current.setValue(UIInterfaceOrientation.portrait.rawValue, forKey: "orientation")
            AppDelegate.orientationLock = .portrait
        }
        .onDisappear() {
            AppDelegate.orientationLock = .all
        }
    }
        
}

struct ImagePickerView_Previews: PreviewProvider {
    static var previews: some View {
        ImagePickerView()
    }
}

要从另一个视图调用 ImagePicker/camera，只需调用 ImagePickerView() 它应该可以正常工作