Can't open the Image Picker for the second time

[lutluthfi]

Hi, I can't open the ImagePicker for the second time. After looking into the code, here are what I got:

1. I got the observer will emit onError when the app did cancel the Image Picker, so it will emit onDisposed also.

   open func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
       dismiss(picker)
   
       if let action = currentAction {
           switch action {
           case .photo(let observer): observer.on(.error(RxMediaPickerError.canceled))
           case .video(let observer, _): observer.on(.error(RxMediaPickerError.canceled))
           }
       }
   }

2. I got the observer will emit onComplete when the app finishes pick the image, it will emit onDisposed also.

   func processPhoto(info: [UIImagePickerController.InfoKey: Any],
                     observer: AnyObserver<(UIImage, UIImage?)>) {
       guard let image = info[UIImagePickerController.InfoKey.originalImage] as? UIImage else {
           observer.on(.error(RxMediaPickerError.generalError))
           return
       }
   
       let editedImage = info[UIImagePickerController.InfoKey.editedImage] as? UIImage
       observer.onNext((image, editedImage))
       observer.onCompleted()
   }

That's why I can't open the ImagePicker for the second time. So, these are what I suggest:

1. Only call dismiss(picker) inside func imagePickerControllerDidCancel(_ picker: UIImagePickerController)

   open func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
       dismiss(picker)
   }

2. Call onComplete after picking the image is not necessary

   func processPhoto(info: [UIImagePickerController.InfoKey: Any],
                     observer: AnyObserver<(UIImage, UIImage?)>) {
       guard let image = info[UIImagePickerController.InfoKey.originalImage] as? UIImage else {
           observer.on(.error(RxMediaPickerError.generalError))
           return
       }
   
       let editedImage = info[UIImagePickerController.InfoKey.editedImage] as? UIImage
       observer.onNext((image, editedImage))
   }