UIImagePickerController extension discovery failed with error: (null)

Question

我试图在我的 ViewController 上实现一个 ImagePicker，但结果它在控制台上显示了一个空白的 ImagePicker 控制器和 UIImagePickerController extension discovery failed with error: (null) 消息。

我不知道自己做错了什么，也没有找到关于此事的信息。不过，我注意到的一件事是 PickerView 的显示时间有点太长了。

ImagePicker相关的代码如下：

private let imagePicker = UIImagePickerController()

private func setupImagePicker() {
        imagePicker.sourceType = .photoLibrary
        imagePicker.allowsEditing = false
        imagePicker.delegate = self
        imagePicker.mediaTypes = ["public.image"]
}

    @objc private func launchImagePicker() {

        let photos = PHPhotoLibrary.authorizationStatus()
        if photos == .notDetermined {
            PHPhotoLibrary.requestAuthorization({ [weak self] status in
                DispatchQueue.main.async {
                    if status == .authorized, let picker = self?.imagePicker {
                        self?.present(picker, animated: true, completion: nil)
                    } else {
                        self?.present(URealtorUtils.getAlert(message: "You have to authorize photo library access in order to upload a photo"), animated: true, completion: nil)
                    }
                }
            })
        } else if photos == .authorized {
            present(imagePicker, animated: true, completion: nil)
        }
    }

extension MyController: UIImagePickerControllerDelegate, UINavigationControllerDelegate {

    func imagePickerController(_ picker: UIImagePickerController,
                               didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey: Any]) {
        if let image = info[UIImagePickerController.InfoKey.originalImage] as? UIImage {
            self.viewModel.setPropertyImage(image)
        }
        dismiss(animated: true, completion: nil)
    }

    func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
        dismiss(animated: true, completion: nil)
    }
}

这是显示 PickerView 时我得到的屏幕截图：

Answer 1

我检查了细节，你的实现没有问题。我这里也查了苹果的官方样本。 https://developer.apple.com/documentation/uikit/uiimagepickercontroller/customizing_an_image_picker_controller 结果相同！

最后，这是一个与 iOS 模拟器（版本 11.3.1）相关的问题。仅供参考，我发现 iPhone 11 Pro Max 在某些以前的版本中不起作用，但 iPhone 8 和其他一些版本有效。我只是希望你们不要在这上面浪费时间。继续前进。

谢谢。

UIImagePickerController extension discovery failed with error: (null)

UIImagePickerController extension discovery failed with error: (null)

uiimagepickercontroller

ios

swift