Manipulate UIPickerView to have single rows

Does anyone understand how Apple manipulated the regular UIPickerView t开发者_StackOverflow中文版o look like the image below? Instead of two rows, I only need one in the middle. If anyone can point me in the right direction or show me a tutorial I'd really appreciate it.

Try making a narrow picker view. Set it atop an image view. Fill the image view with a screenshot of the picker background.