[在iOS 13中使用UIImagePickerController时崩溃

Question

在其他演示中效果很好，但是在我的项目中崩溃了。我用google'CAMPreviewViewController'却找不到任何东西

UIImagePickerController * picker=[[UIImagePickerController alloc]init];
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
picker.allowsEditing = NO;
picker.delegate = self;
picker.cameraDevice = UIImagePickerControllerCameraDeviceFront;
[self presentViewController:picker animated:YES completion:nil];

CRASH

在-[CAMPreviewViewController _updateIndicatorsForMetadataObjectResults：viewType：viewClass：frameCallback：minimumAreaChangeThreshold：minimumAreaFractionChangeThreshold：]中的断言失败，/ BuildRoot / Library / Caches / com.apple.xbs / Sources / Camera / Camera / Camera-View2.92.9.230 / CameraViewController .m：1152

Answer 1

尝试此一个

    var imagePicker: UIImagePickerController!

 @IBAction func takePhotoAction(_ sender: UIButton) {
        imagePicker =  UIImagePickerController()
        imagePicker.delegate = self
        imagePicker.sourceType = .camera
        present(imagePicker, animated: true, completion: nil)
    }

Add This to class as delegates 

 UINavigationControllerDelegate, UIImagePickerControllerDelegate