Question

当按下从后向前翻转照相机的按钮时，我的应用程序冻结。我仅在 iPhone XS / XS Max 中遇到此问题。但是，当我从此类视图控制器运行应用程序时，一切正常。

请帮助我解决此问题。

class UploadViewController: UITableViewController,UINavigationControllerDelegate, UIImagePickerControllerDelegate {

var imagePicker = UIImagePickerController()

override func viewDidLoad() {
        super.viewDidLoad()
        DispatchQueue.main.async {
            checkCameraPermission()
        }
    }

//Camera access
    func camera()
    {
        if(UIImagePickerController .isSourceTypeAvailable(UIImagePickerController.SourceType.camera)){
            imagePicker.sourceType = UIImagePickerController.SourceType.camera
            imagePicker.mediaTypes = ["public.image"]
            imagePicker.allowsEditing = true
            imagePicker.delegate = self
            self.present(imagePicker, animated: true, completion: nil)
        }
        else{
            let alert  = UIAlertController(title: "Warning", message: "You don't have camera", preferredStyle: .alert)
            alert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
            self.present(alert, animated: true, completion: nil)
        }
    }  
}

extension UploadViewController {

    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {

        if let image = info[.editedImage] as? UIImage {
            self.imagePickedBlock?(image)
            self.appImage = image
            self.imageView.image = image
            UIImageWriteToSavedPhotosAlbum(image, self, #selector(image(_:didFinishSavingWithError:contextInfo:)), nil)
            //            let imageData = image.pngData()! as NSData
        }
        else {
            print("No image found")
            return
        }
        picker.dismiss(animated: true, completion: nil)
    }

调试器向我抛出此错误：

线程48：EXC_BAD_ACCESS（code = 2，address = 0 * 16b142640）

切换到前置摄像头[UIImagePickerController]时，应用程序冻结

0 个答案: