title: How to enter Number and Arithmatic characters in Android
body: <p>I would like to be able to enter numbers as well as arithmetic operators in a <code>TextEdit</code> to represent latitude and longitude.  So I need numbers, decimal points, and additional and subtraction operators (+/-)</p>
  
  <pre><code>    &lt;EditText
      android:id="@+id/dia_latitude"
      style="@style/Heading"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:layout_marginLeft="5dp"
      android:inputType="number" /&gt;
  </code></pre>