How to check if the user gave permission to use the camera?

Question

Trying to write this:

if usergavepermissiontousercamera  
  opencamera
else 
  showmycustompermissionview

Couldn\'t find a current way to d

Answer 1

This will open the camera when permission is given by the user. Otherwise show alert for asking permission.

func openCamera(){
        
        let authStatus = AVCaptureDevice.authorizationStatus(for: AVMediaType.video)
        
        switch (authStatus){
            
        case .notDetermined, .restricted, .denied:
            showAlert(title: "Unable to access the Camera", message: "To enable access, go to Settings > Privacy > Camera and turn on Camera access for this app.")
        case .authorized:
            alert.dismiss(animated: true, completion: nil)
            if(UIImagePickerController .isSourceTypeAvailable(.camera)){
                picker.sourceType = .camera
                picker.showsCameraControls=true
                picker.allowsEditing=true
                self.viewController!.present(picker, animated: true, completion: nil)
            }
        }
}

after this call this function for showing alert

func showAlert(title:String, message:String) {
        let alert = UIAlertController(title: title,
                                      message: message,
                                      preferredStyle: UIAlertController.Style.alert)
        
        let okAction = UIAlertAction(title: "OK", style: .cancel, handler: nil)
        alert.addAction(okAction)
        
        let settingsAction = UIAlertAction(title: "Settings", style: .default, handler: { _ in
            // Take the user to Settings app to possibly change permission.
            guard let settingsUrl = URL(string: UIApplication.openSettingsURLString) else { return }
            if UIApplication.shared.canOpenURL(settingsUrl) {
                if #available(iOS 10.0, *) {
                    UIApplication.shared.open(settingsUrl, completionHandler: { (success) in
                        // Finished opening URL
                    })
                } else {
                    // Fallback on earlier versions
                    UIApplication.shared.openURL(settingsUrl)
                }
            }
        })
        alert.addAction(settingsAction)
        
        self.viewController!.present(alert, animated: true, completion: nil)
    }