How to set Spinner default value to null?

I'm trying to get a Spinner to load up with no selected value. Once the user selects a value it then takes them to another page.

This is proving to be a problem because at present, the page just loads straight away before the user gets a choice to choose.

My spinner class is set up the same way as Google's: http://developer.android.com/resources/tutorials/views/hello-spinner.html

So basically, is it possible have a spinner that loads with nothing selected because at present, it loads the first item in my string array.