title: iOS UIPickerView: How to limit the scrolling range
body: <p>When you scroll <code>UIPickerView</code> you can move your finger on the touchpad up and down - far up and down to how big the screen is. Is there a way to limit this range of scrolling up and down to the area of the <code>UIPickerView</code>? So that once you move your finger outside of the <code>UIPickerView</code> the scrolling of the <code>UIPickerView</code> stops? I am making <code>UIPIckerView</code> as a spinner in a game, and I need to achieve this for a fair gaming.</p>