UIImagePickerController camera keeps open after closing - ios

Question

I wrote a UIViewControllerRepresentable for a VideoRecordingView in SwiftUI:
import SwiftUI
import AVFoundation
import Photos
struct VideoRecordingView: UIViewControllerRepresentable {
#Binding var videoURL: URL?
#Environment(\.viewController) private var viewControllerHolder: UIViewController?
let imagePickerController: UIImagePickerController
init(videoURL: Binding<URL?>) {
self._videoURL = videoURL
imagePickerController = UIImagePickerController()
}
func makeUIViewController(context: UIViewControllerRepresentableContext<VideoRecordingView>) -> UIImagePickerController {
imagePickerController.allowsEditing = true
imagePickerController.sourceType = .camera
imagePickerController.mediaTypes = ["public.movie"]
imagePickerController.videoMaximumDuration = .infinity
if #available(iOS 14.0, *) {
imagePickerController.videoQuality = .typeHigh
} else {
}
imagePickerController.delegate = context.coordinator
return imagePickerController
}
func updateUIViewController(_ uiViewController: UIImagePickerController, context: UIViewControllerRepresentableContext<VideoRecordingView>) {}
func makeCoordinator() -> Coordinator {
Coordinator(self)
}
final class Coordinator: NSObject, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
var parent: VideoRecordingView
init(_ parent: VideoRecordingView) {
self.parent = parent
NotificationCenter.default.addObserver(forName: UIApplication.willResignActiveNotification, object: nil, queue: nil) { notification in
parent.imagePickerController.stopVideoCapture()
// parent.viewControllerHolder?.dismiss(animated: true, completion: nil)
}
}
func requestAuthorizationToPhotos(completionHandler: #escaping (Bool) -> Void) {
guard PHPhotoLibrary.authorizationStatus() != .authorized else {
completionHandler(true)
return
}
PHPhotoLibrary.requestAuthorization { status in
completionHandler(status == .authorized ? true : false)
}
}
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
picker.stopVideoCapture()
parent.viewControllerHolder?.dismiss(animated: true, completion: nil)
}
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
picker.stopVideoCapture()
if let videoURL = info[UIImagePickerController.InfoKey.mediaURL] as? URL {
DispatchQueue.global(qos: .background).async {
let fileURL = videoURL.copyFileToTempDirectory()
DispatchQueue.main.async {
self.parent.videoURL = fileURL
}
self.requestAuthorizationToPhotos { granted in
if (granted && UIVideoAtPathIsCompatibleWithSavedPhotosAlbum(videoURL.path)) {
UISaveVideoAtPathToSavedPhotosAlbum(videoURL.path, nil, nil, nil)
}
}
}
}
parent.viewControllerHolder?.dismiss(animated: true, completion: nil)
}
}
}
I use imagePickerController.stopVideoCapture() and dismiss it, when I close it.
When I close it, I exit the app and go back to the app again. (I go to the background and return to the foreground.)
At this time, a green light appears in the status bar, which means it is using the camera. While it is closed and I do not know which part of my code is using the camera.
Please help me. Thanks :)