Is there a way to ask user for Camera access after they have already denied it on iOS?

Question

I am using this code, but unfortunately it doesn\'t work.

After a user has denied camera access, I want to ask them for permission to use the camera again the next t

Answer 1

Full code of Camera access and photo library access

import AVFoundation

To handle camera action use the below code: Method calling

func openCameraOrLibrary(){
    let imagePicker = UIImagePickerController()
    let alertController : UIAlertController = UIAlertController(title: "Select Camera or Photo Library".localized, message: "", preferredStyle: .actionSheet)
    let cameraAction : UIAlertAction = UIAlertAction(title: "Camera".localized, style: .default, handler: {(cameraAction) in

        if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.camera) == true {
            if self.isCamAccessDenied() == false { **//Calling cam access method here**
                imagePicker.sourceType = .camera
                imagePicker.delegate = self
                self.present(imagePicker, animated: true, completion: nil)
            }

        }else{
            self.present(self.showAlert(Title: "", Message: "Camera is not available on this Device or accesibility has been revoked!".localized), animated: true, completion: nil)
            self.showTabbar()

        }

    })

    let libraryAction : UIAlertAction = UIAlertAction(title: "Photo Library", style: .default, handler: {(libraryAction) in

        if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.photoLibrary) == true {

            imagePicker.sourceType = .photoLibrary
            imagePicker.delegate = self
            self.present(imagePicker, animated: true, completion: nil)

        }else{
            self.showTabbar()
            self.present(self.showAlert(Title: "", Message: "Photo Library is not available on this Device or accesibility has been revoked!".localized), animated: true, completion: nil)
        }
    })

    let cancelAction : UIAlertAction = UIAlertAction(title: "Cancel".localized, style: .cancel , handler: {(cancelActn) in
        self.showTabbar()
    })

    alertController.addAction(cameraAction)

    alertController.addAction(libraryAction)

    alertController.addAction(cancelAction)

    alertController.popoverPresentationController?.sourceView = view
    alertController.popoverPresentationController?.sourceRect = view.frame

    self.present(alertController, animated: true, completion: nil)
    self.hideTabbar()

}

Method to handle camera access functionality

func isCamAccessDenied()-> Bool
{
    let status = AVCaptureDevice.authorizationStatus(for: AVMediaType.video)
    if status == .restricted || status == .denied {
    DispatchQueue.main.async
        {
            var alertText = "It looks like your privacy settings are preventing us from accessing your camera to do barcode scanning. You can fix this by doing the following:\n\n1. Close this app.\n\n2. Open the Settings app.\n\n3. Scroll to the bottom and select this app in the list.\n\n4. Turn the Camera on.\n\n5. Open this app and try again."

            var alertButton = "OK"
            var goAction = UIAlertAction(title: alertButton, style: .default, handler: nil)

            if UIApplication.shared.canOpenURL(URL(string: UIApplicationOpenSettingsURLString)!)
            {
                alertText = "It looks like your privacy settings are preventing us from accessing your camera to do barcode scanning. You can fix this by doing the following:\n\n1. Touch the Go button below to open the Settings app.\n\n2. Turn the Camera on.\n\n3. Open this app and try again."

                alertButton = "OK"

                goAction = UIAlertAction(title: alertButton, style: .default, handler: {(alert: UIAlertAction!) -> Void in
                    UIApplication.shared.open(URL(string: UIApplicationOpenSettingsURLString)!, options: [:], completionHandler: nil)
                })
            }

            let alert = UIAlertController(title: "Error", message: alertText, preferredStyle: .alert)
            alert.addAction(goAction)
            self.present(alert, animated: true, completion: nil)
        }
        return true
    }
    return false
}