title: android parsing negative number strings
body: <p>How to parse negative number strings?</p>
  
  <p>strings may be of the form:</p>
  
  <pre><code>-123.23  
  (123.23)  
  123.23-
  </code></pre>
  
  <p>is there a class that will convert any of the above strings to a number?</p>
  
  <p>if not, what is the best way to do it?</p>