title: Android inputType="numberDecimal" brings up keyboard without commas
body: <p>So i have been playing around with a little game with some mathematical questions. The application gives you, for example, a question like 23 + 47, and that's fine and all, but when it gives you a question like 9/6 the problems appears. Since you input the result in an EditText, i need the correct input type. But! when i do</p>
  
  <pre><code>android:inputType="numberDecimal"
  </code></pre>
  
  <p>the soft keyboard it comes up with, is a soft keyboard without seperators, which mean i can't make commas. And it pretty much ruins the game :-)
  I have tried things like </p>
  
  <p><code>android:inputType"numberSigned|numberDecimal"</code></p>
  
  <p>i have also tried </p>
  
  <p><code>android:digits="0123456789."</code>
  but nothing worked so far. </p>
  
  <p>I just can't get the right keyboard up. </p>
  
  <p>Any suggestions?</p>