iOS UIImagePickerController显示空白页

Question

我试图展示和消除UIImagePickerController的连续性

这是我的代码

var imagePicker = UIImagePickerController()
func viewDidLoad() {
    super.viewDidLoad()
    imagePicker.allowsEditing = false
    imagePicker.delegate = self
}

func showImagePickerController() {
    imagePicker.sourceType = .photoLibrary
    present(self.imagePicker, animated: true)
}

// MARK: - UIImagePickerControllerDelegate
private func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String: Any]) {
    if let image = info[UIImagePickerController.InfoKey.originalImage.rawValue] as? UIImage {
        imageViewGroup.image = image
        isChoosePhoto = true
    }
    dismiss(animated: true)
}

结果如下：

以下是错误日志：

  

UIImagePickerController UIViewController创建错误：错误域= NSCocoaErrorDomain代码= 4099“与名为com.apple.mobileslideshow.photo-picker.viewservice的服务的连接已中断，但消息已通过其他代理发送，因此该代理已变为无效。” UserInfo = {NSDebugDescription =与名为com.apple.mobileslideshow.photo-picker.viewservice的服务的连接已中断，但消息是通过其他代理发送的，因此该代理已无效。}

所以，我应该怎么解决这个问题

Answer 1

使用Swift 4，UIImagePicker有两个先决条件。检查是否已完成

1）UIImagePickerController的委托是UIImagePickerControllerDelegate & UINavigationControllerDelegate，因此需要显式添加UINavigationControllerDelegate作为以下协议之一：

class ViewController:UIViewController, UIImagePickerControllerDelegate, 
UINavigationControllerDelegate { .... } 

2）确保info.plist设置了Privacy - Photo library Usage Description键和字符串值。