Using the camera

Go to info.plist and add the following keys:

Key       :  Privacy - Camera Usage Description  
Value     :  $(PRODUCT_NAME) camera use

Key       :  Privacy - Photo Library Usage Description  
Value     :  $(PRODUCT_NAME) photo library use

2. At class:
class ViewController: UIViewController, UIImagePickerControllerDelegate,
UINavigationControllerDelegate

3. Add to button click function to get camera:
if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.camera) {
            let imagePicker = UIImagePickerController()
            imagePicker.delegate = self
            imagePicker.sourceType = UIImagePickerControllerSourceType.camera;
            imagePicker.allowsEditing = false
            present(imagePicker, animated: true, completion: nil)
        }

4. Add the following function to post the image to the image view:
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
        print("Now image picking")
        if let pickedImage = info[UIImagePickerControllerOriginalImage] as? UIImage
        {
            myImageView.image = pickedImage
            dismiss(animated: true, completion: nil)
        }
    }

5. Save the image to the object library
let imageData = UIImageJPEGRepresentation(myImageView.image!, 0.6)
            let compressedJPGImage = UIImage(data: imageData!)
            UIImageWriteToSavedPhotosAlbum(compressedJPGImage!, nil, nil, nil)