UIImagePickerController 扩展发现失败，错误:(空) [英] UIImagePickerController extension discovery failed with error: (null)

问题描述

我正在尝试在我的 ViewController 上实现一个 ImagePicker，但结果它显示了一个空白的 ImagePicker 控制器和 UIImagePickerController 扩展发现失败，错误:(null) 控制台上的消息.

I'm trying to implement an ImagePicker on my ViewController, but turns out it presents a blank ImagePicker Controller and UIImagePickerController extension discovery failed with error: (null) message on the console.

我不知道自己做错了什么，也没有找到有关此事的信息.不过，我注意到的一件事是 PickerView 的显示时间太长了.

I have no idea what I'm doing wrong, and I found no information on the matter. One thing I noticed, though, is that the PickerView takes a little bit too long to be presented.

ImagePicker 相关代码如下:

The code related to the ImagePicker is the following:

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)
    }
}

这是我在显示 PickerView 时得到的屏幕截图:

This is a screenshot of what I get when the PickerView is presented:

推荐答案

我查看了详细信息，您的实现没有问题.我还在这里检查了苹果的官方样本.https://developer.apple.com/documentation/uikit/uiimagepickercontroller/customizing_an_image_picker_controller结果一样！

I checked the details, and there are no issues in your implementation. I also checked the apple's official sample here. https://developer.apple.com/documentation/uikit/uiimagepickercontroller/customizing_an_image_picker_controller Same result!

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无法使用，但 iPhone 8 和其他一些版本可以使用.我只是希望你们不要在这上面浪费时间.继续前进.

Finally, this is an issue related to iOS Simulators(version 11.3.1). FYI, I found iPhone 11 Pro Max didn't work in some previous versions, but iPhone 8 and some others worked. I just want you guys not wasting time on this. Move ahead.

谢谢.

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