How it works...

Let's step through what we've just done. We'll begin at IBAction and have a look at the UIPickerView view we've created:

let picker = UIImagePickerController() // 1
picker.delegate = self // 2
picker.allowsEditing = false // 3
picker.sourceType = UIImagePickerController.isSourceTypeAvailable
  (.camera) ? .camera : .photoLibrary // 4
    
present(picker, animated: true) // 5

Let's go through this one line at a time:

1. We instantiate an instance of UIImagePickerController – an available API that will allow us to choose an image based on a specific source.
2. We set the delegate as self, so we can harness any results or actions caused by UIImagePickerController.
3. We set allowEditing to false, which is used to hide controls when the camera is our source.
4. In this instance, we set the source type based on whether the camera is available or not (so it works well with the simulator).
5. Finally, we present our view controller.

Now, let&apos...