title: Objective C: uint32_t stored as String, need to read as uint32_t
body: <p>I am storing color values in a database for an iPad app that needs a legend with colors in it.  Each entry has it's own color value, derived from a hex value.  Basically, my colors all look like this: 0X######.  I have functions that can take this value, as a uint32_t, and turn it into the color I need.  However, I store the value as a String.</p>
  
  <p>What I need to do is convert this string to a uint32_t.  I need "0X######" to equal 0X######, if that makes sense.  I know this might not be possible, in which case I'll have to find another solution.</p>