New PhotosPicker in SwiftUI可以打开相机而不是照片库。

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英文:

New PhotosPicker in SwiftUI can open camera instead of the photoLibrary

问题

在新的PhotosPicker中是否有办法让相机打开而不是打开相册?我记得在旧的UIImagePickerController中,用户可以在选择器中选择使用相机还是从图片中选择。

英文:

is there any way to make the new PhotosPicker open the camera instead of opening the photoLibrary, I remember in the old UIImagePickerController there was this option user could choose in the picker if use camera or select from picture.


ImagePikerCircular(im: im, dataImage: $dataImage)
            .overlay(alignment: .bottomTrailing) {
                PhotosPicker(selection: $im.imageSelection,
                             matching: .images,
                             photoLibrary: .shared()) {
                    Image(systemName: "pencil.circle.fill")
                        .symbolRenderingMode(.multicolor)
                        .font(.system(size: 30))
                        .foregroundColor(.accentColor)
                }
                .buttonStyle(.borderless)
                .photosPickerStyle(.presentation)
            }

答案1

得分: 1

没有,使用PhotosPicker没有打开相机的方法,您需要创建自己的选择对话框,当用户点击相机时,打开旧的UIImagePickerController,您可以创建一个UIViewControllerRepresentable如下:

struct CameraPickerView: UIViewControllerRepresentable {
    
    private var sourceType: UIImagePickerController.SourceType = .camera
    private let onImagePicked: (UIImage) -> Void
    
    @Environment(\.presentationMode) private var presentationMode
    
    public init(onImagePicked: @escaping (UIImage) -> Void) {
        self.onImagePicked = onImagePicked
    }
    
    public func makeUIViewController(context: Context) -> UIImagePickerController {
        let picker = UIImagePickerController()
        picker.sourceType = self.sourceType
        picker.delegate = context.coordinator
        return picker
    }
    
    public func updateUIViewController(_ uiViewController: UIImagePickerController, context: Context) {}
    
    public func makeCoordinator() -> Coordinator {
        Coordinator(
            onDismiss: { self.presentationMode.wrappedValue.dismiss() },
            onImagePicked: self.onImagePicked
        )
    }
    
    final public class Coordinator: NSObject, UINavigationControllerDelegate, UIImagePickerControllerDelegate {
        
        private let onDismiss: () -> Void
        private let onImagePicked: (UIImage) -> Void
        
        init(onDismiss: @escaping () -> Void, onImagePicked: @escaping (UIImage) -> Void) {
            self.onDismiss = onDismiss
            self.onImagePicked = onImagePicked
        }
        
        public func imagePickerController(_ picker: UIImagePickerController,
                                          didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey: Any]) {
            if let image = info[.originalImage] as? UIImage {
                self.onImagePicked(image)
            }
            self.onDismiss()
        }
        public func imagePickerControllerDidCancel(_: UIImagePickerController) {
            self.onDismiss()
        }
    }
}

然后,您可以使用fullScreenCover呈现选择器:

.fullScreenCover(isPresented: $showCameraPicker) {
    CameraPickerView() { image in
        // 对您的图像执行所需操作。
    }
}

来源

英文:

No, there is no way to open the camera using the PhotosPicker, you will need to create your own selection dialog and when the user taps the camera, open the old UIImagePickerController, you can create a UIViewControllerRepresentable like this:

struct CameraPickerView: UIViewControllerRepresentable {
    
    private var sourceType: UIImagePickerController.SourceType = .camera
    private let onImagePicked: (UIImage) -> Void
    
    @Environment(\.presentationMode) private var presentationMode
    
    public init(onImagePicked: @escaping (UIImage) -> Void) {
        self.onImagePicked = onImagePicked
    }
    
    public func makeUIViewController(context: Context) -> UIImagePickerController {
        let picker = UIImagePickerController()
        picker.sourceType = self.sourceType
        picker.delegate = context.coordinator
        return picker
    }
    
    public func updateUIViewController(_ uiViewController: UIImagePickerController, context: Context) {}
    
    public func makeCoordinator() -> Coordinator {
        Coordinator(
            onDismiss: { self.presentationMode.wrappedValue.dismiss() },
            onImagePicked: self.onImagePicked
        )
    }
    
    final public class Coordinator: NSObject, UINavigationControllerDelegate, UIImagePickerControllerDelegate {
        
        private let onDismiss: () -> Void
        private let onImagePicked: (UIImage) -> Void
        
        init(onDismiss: @escaping () -> Void, onImagePicked: @escaping (UIImage) -> Void) {
            self.onDismiss = onDismiss
            self.onImagePicked = onImagePicked
        }
        
        public func imagePickerController(_ picker: UIImagePickerController,
                                          didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey: Any]) {
            if let image = info[.originalImage] as? UIImage {
                self.onImagePicked(image)
            }
            self.onDismiss()
        }
        public func imagePickerControllerDidCancel(_: UIImagePickerController) {
            self.onDismiss()
        }
    }
}

Then, you can present the picker with a fullScreenCover:

.fullScreenCover(isPresented: $showCameraPicker) {
    CameraPickerView() { image in
        // Do what you want with your image.
    }
}

source

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  • 本文由 发表于 2023年7月20日 13:01:52
  • 转载请务必保留本文链接:https://go.coder-hub.com/76726799.html
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